Ken, It seems that I am having the same issue as you. And ls3 heads? There are two … Botom line, even if your truck still runs ok with the upgrades, you won’t gain much without a tune. Curious if the stock LS3 cam would be a good cheap upgrade for pulling, and overall performance. They can be CNC’d and that would put you well over 400 even with a smaller stage 1 cam. On the other hand, stock rebuilds … The LQ4 and LQ9 cranks were cast but strong. Main Bearing Clearance - Cranky Dispositon Checking main bearing clearances & crank endplay. You’ll probably pay a shop $3-400 or more. Crankshaft Bearing Clearance (Production) 0.020-0.052 mm. Either way is fine, but I would like to know. The aftermarket is strong, crate engines are available, and used motors are often cheaply sourced through junkyards. Then u gotta change intake….. this guy givin bad advice piss off noob. The reason for using a mirror is to make certain the clearance doesn’t close where you can’t easily see it or measure it. Pingback: LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family - OnAllCylinders. Displacement: 6.0L / 364 cid. Save my name, email, and website in this browser for the next time I comment. This video demonstrates the proper use of plastiguage for determining main bearing clearance. = .002 oil clearance. Rocker Arm Cover Seal Surface), Cylinder Head Intake Manifold Deck Flatness, Engine Block Cylinder Head Deck Surface Flatness (Measured within a How will these changes effect the factory electronics/module and performance? Connecting Rod Side Clearance ; 0.11-0.51 mm. I am going to make a cam change to hopefully build an engine to produce a pretty flat power curve for daily driving but help when pulling a 6100 pound travel trailer. My LQ4 is an 01 from a Yukon Denali and it is a Drive by Wire. Length of the Cylinder Head), Cylinder Head Exhaust Manifold Deck Flatness, Cylinder Head Height (Measured from the Head Deck to the Valve Pingback: LQ4/LQ9 Engine Upgrade Guide: Expert Advice for LQ4 & LQ9 Mods to Maximize Performance - OnAllCylinders, Pingback: Mailbag: Mating an Older GM Automatic Transmission to an LS Engine, Iâm currently looking into buying a 6.0 for my project 03 Chevy Silverado Single cab that I want to get some speed and power out of and I was wondering if I should buy a 6.0 or get a 5.7 or 5.3, Jerry I have 1969 Chevy truck that is modified I purchase and I not sure what 6L motor and hp is has , I was told a 2005 3/4 Chevy truck I got a F103 number on the front block pass side and pass head alum. Cam, Ls3 heads. The clearance is measured 90 degrees to the bearing parting line, which is the thickest part of the bearing (bearing thickness tapers slightly toward the parting line). The new small block is known as the LS engine family and has more than successfully replaced 350's and 305's that were based in design from the 1950's. I have a 27 ft travel trailer and my 2500 with the 6.0 struggles to get up the mountains here in AZ. With a completely disassembled engine, the first step in this process is to ensure that the proper main bearings are used. With that tuner and programming you’ll also be set if you want to make changes in the future. They’ve been known to handle over 1000 whp. Reluctor Wheel: 24x. Required fields are marked *. Replacing the old tried and true small block Chevy engine with a new version would not be an easy task. If you aren’t computer savvy and detail oriented, maybe someone in your family is. If anyone can tell me for sure, I would be very grateful. The LQ4 is a common engine found junkyards, yet is capable of building impressive power with the right upgrades. [Looking to upgrade your LQ4 engine? These motors are capable of making a lot of horsepower, and respond well to upgrades like turbos, superchargers, high-flow cylinder heads, intake systems, cams, and nitrous oxide. Check out LQ4/LQ9 Engine Upgrade Guide: Expert Advice for LQ4 & LQ9 Mods to Maximize Performance.]. Writer Bio This article was written by a professional writer, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. Flexplate/Flywheel Mounting Flange … Ex .001 x 2.00 shaft dia. Displacement is 6.0 L (≈366 cu in) from 101.6 mm bore and 92 mm stroke. The engine specs and information listed here is for the stock LQ4 engine. Material: Iron. Casting Numbers: 12551364, 12573581, 12577184. This is my first LS build and I grew up with the first and second gen small blocks. Below the Tooth Diameter), Crankshaft Thrust Wall Width (Production), Cylinder Head Engine Block Deck Flatness (Measured within a With the pistons in place, we checked rod-bearing clearances using more Clevite Plastigage using the same technique as with the main bearings. Henry De Los Santos Jun 22, 2007. The information you provide is invaluable to me. Will the stock ECM be just fine with all the upgrades or will I need to tune or replace it with one that will? by ghe way, im adding headers,x pipe exaust, electric fans, cold air induction id hoped a cam kit with all that eould get me to roughly 400 hp at thd flywheel….. 0.005 mm (Maximum for one half of the Journal Length), 0.0002 in (Maximum for one half of the Journal Length), Camshaft Runout (Measured at the Intermediate Journals), Connecting Rod Bearing Clearance (Production), Connecting Rod Bearing Clearance (Service Limit), Crankshaft Bearing Clearance (Production), Crankshaft Connecting Rod Journal Diameter (Production), Crankshaft Connecting Rod Journal Diameter (Service Limit), Crankshaft Connecting Rod Journal Taper (Production), Crankshaft Connecting Rod Journal Taper (Service Limit), Crankshaft Connecting Rod Journal Out-of-Round (Production), Crankshaft Connecting Rod Journal Out-of-Round (Service Limit), Crankshaft Main Journal Diameter (Production), Crankshaft Main Journal Diameter (Service Limit), Crankshaft Main Journal Out-of-Round (Production), Crankshaft Main Journal Out of Round (Service Limit), Crankshaft Main Journal Taper (Production), Crankshaft Main Journal Taper (Service Limit), Crankshaft Reluctor Ring Runout (Measured 1.0 mm (0.04 in) Crankshaft Rod Journal: 2.100 in. Any more than this makes the rotating assembly fl ow too much oil, resulting in oil pressure problems, such as low oil pressure at a hot idle. Reducing the oil clearance between the rod and main bearings and the crankshaft has a number of advantages. : 55.063-55.088mm / 2.168-2.169" Block Deck Flatness: 0.11mm / 0.004" (measured within 6") Block Deck Flatness: 0.22mm / 0.008" (length of Deck) Main Bearing Bore Dia. Stroke: 3.622 in. Some amount of the coating will be removed during break-in and operation, resulting in a slight increase in clearance. Can I achieve this gain with a cam and heads or should I consider a bore and piston replacement as well. Since LS and Vortec engines are so common, theyâve become the go-to performance and swap engines of the modern era. I would be interested in more details to what you are doing to your engine to gain that extra umph to pull your rig. I am running the LQ4 6.0L engine and I would like to use as much factory product as possible. A set of ProComp tall valve covers provide for the increased height requirements. Before beginning final assembly, you should have all of the applicable tools listed in Chapter 2 in hand and ready to use—read through this chapter first to see which ones you will need if you’re unsure. At this point, a few last words are appropriate. I am an owner of a 04′ 2500 Sierra looking to boost HP from factory 300hp to around 380-400hp with Torque increase as well. The reason for the cam is ls3 heads are very high flow, therefore a heavier-durable cam is needed. Jim, Definitely look into Blackbear performance for a tune. There’s even a specific tow/RV cam meant to maximize torque in the 2500-3500 range called the SUM-8718. These are baseline upgrades that don’t involved SERIOUS time and money. Pingback: Monte Makeover (Part 6): Summit Racing Pro LS Cam Install, Exhaust Upgrade...and Dyno Test! I have a 2006 LQ4 in my 3500 Silverado. Monte Makeover (Part 6): Summit Racing Pro LS Cam Install, Exhaust Upgrade...and Dyno Test! The minimum acceptable clearance is 0.060 – 0.080-inch between all moving parts and the block. The Value Of Torque. Thanks for this very detailed information. Ls3 heads and Tick Street Heat Stg 2 229/244 | .618â/.610â | LSA112+4 cam. can i add 40 hp with a simple cam upgrade yo my 2004 6.0 lq4? Simple things you could do is change the heads out with ls3 heads, larger cam, add a cold air intake, add an exhaust system- If you look around most manufacturers will provide a range of power increase. Center Main = Crank Thrust Wall #3 Indexing = Crank CenterLine Camshaft Bearing Bore Dia. The information you get is invaluable an will make it run just like the factory. Worn Off, Piston Pin Clearance to Piston Bore (Production), Piston Pin Clearance to Piston Bore (Service Limit), Piston Compression Ring End Gap (Production--Top) (Measured in Crankshaft Main Journal: 2.559 in. The short answer to whether every engine needs to be pre-assembled is a resounding “yes!” But this blanket statement is a little deceptive, as in reality, the fact that no two LS engines are alike means required pre-assembly is a matter of degree. Anymore questions feel free to ask. Or, for the same price, you can buy the HP Tuners MPVI2, and the credits to tune your truck. This site uses Akismet to reduce spam. This guide is specifically for the GM LQ4 engine. Let me know please, thank you. There are two main methods used for checking bearing clearance – Plastigage® or gauges. Cylinder Bore), Piston Compression Ring End Gap (Production--2nd) (Measured in 0L Engine 2002This Page WasIntentionally LeftBlank Engine Engine Mechanical. The LQ4 is a 6.0L Gen. 3 small block engine used in GM trucks from 1999-2007. Tick Street Heat Stg 2 229/244 | .618â/.610â | LSA112+4. You’re welcome, Rusty. Anything is less than buying a new truck and I have an awesome foundation/ truck already. This time on SPPTV we continue our Step by Step Series, Building our 5.3 L33 LS Engine. (P): 69.871-69.889mm / 2.750-2.751" Valve Lifter Bore Dia. Crankshaft. Seat to Top Edge of Seal Body - First Design Seal). “Then if you want to go loose, add .0005,” suggests Lake Speed, Jr., certified lubrication specialist at Driven Racing Oil . Also, it should go without saying that before getting started, you should have performed all applicable pre-assembly procedures listed in Chapter 7 and had any and all additional machine work performed on your parts, as appropriate. The Stage 1 high lift (uses factory LS6 springs) is part number SUM-8719. The manufacturer date is 10/2004. Bellhousing Mounting Surface), Front Cover Alignment (at Oil Pan Surface), Rear Cover Alignment (at Oil Pan Surface), Piston - Piston Diameter - Measured Over Skirt Coating, Piston - Piston to Bore Clearance - Production, Piston - Piston to Bore Clearance Service Limit with Skirt Coating 0.00433-0.02 in. The engine specs and information listed here is for the stock LQ4 engine. After torquing the caps on and removing them and inspecting the Plastigage, we found clearances on all eight bearings was .0015 -.002, all within the acceptable limits. As far as a list for other bolt on upgrades:Choice of exhaust system, performance spark plugs and plug wires, better quality distributor (complete set), cooling fan, better quality oil. It’s best to sand only the leading edge side of the thrust bearing when increasing clearance. Jason, you can hit your target easily with just a cam. There is a lot of power there along with trans shift points and turning off torque limiting etc. This info will be helpful. Crankshaft Bearing Cap Bolts (Inner Bolts-Final Pass in Sequence) 80 degrees Crankshaft Bearing Cap Side Bolts 25 N•m 18 lb ft Crankshaft Bearing Cap Bolts … Plastigage® Sold in sleeves of threads for specific thickness ranges, Plastigage® works really well in situations where the components are not being completely removed, such as in-engine bearing replacement, and other non-automotive uses. Do u even know what ur talking about? Mechanically similar, General Motorsâ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buickâheck, even Saab, Hummer, and Isuzu got some LS love. Measure the vertical clearance. Again, simple things that can be done to get you more likely than not to 435-485hp depending on the tune and how well the parts you decide to buy perform. This is commonly done with plastigage, but that method is not very accurate. Share. Thanks -Brad. 4.000 in. Mines 2000 6.0 2500 . Summit Racing has created a series of comprehensive guides for each engine in the LS family, so engine builders and tuners can have a handy reference for their projects. Even wired up the cruise control from my 98 to the 01 TAC module to work. Wtf this guy talkin about a distributor in a lq4???? Bore Dia. For clearances smaller and larger than the rule of thumb ,refer to the factors listed below: Factors for tighter oil clearances: Smaller journals; Lower viscosity oils; Surface finishes min 4 RA Install a main bearing and torque the cap. The time-honored formula for determining bearing clearance is .001-inch for every inch of crankshaft main journal or rod journal diameter. (Image/Super Chevy). Thank you for reading. Crankshaft Main Bearing Clearance – Production 0.02–0.052 mm 0.0008–0.0021 in Crankshaft Main Bearing Clearance – Service 0.02–0.065 mm 0.0008–0.0025 in Crankshaft Main Journal Diameter – Production 64.993–65.007 mm 2.558–2.559 in Crankshaft Main Journal Diameter – … Engine Mechanical Service Manual 6. Here's how to measure the clearance with an outside micrometer and a dial bore gauge. They can run with a factory tune, but a tune is heavily recommended. Typical bearing oil clearance is 0.001 to 0.0015, and that's not very much space. 1.2 46 Engine Front Cover 0.2 06 Engine Front Cover Gasket 0.207 Engine Flywheel For marketing purposes, it was also known as the Vortec 6000. Another choice is the Trick Flow As Cast 220’s. The Summit Pro LS truck line has quite a few variants in stages 1 through 4. Debating on whether to put it in a 69 Corvette, or a 476 Big Block. Bore), Piston Compression Ring End Gap (Service--2nd) (Measured in Cylinder Journal bearings usually operate in a hydrodynamic regime of lubrication as the generated pressures are low compared with those experienced by ball and rolling element bearings, gears and cam–follower pairs. Part Number: SLP-152M Not Yet Reviewed General rule of thumb for determining oil clearance is .001 of clearance for every inch of shaft dia. I am very familiar with Gen I/II small blocks but looking to tackle a new beast and get some pulling power. LQ4 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, used motors are often cheaply sourced through junkyards, LS engine spec guides and LS tech resources here, The Definitive Guide to LS Engine Specs and LS Engine Upgrades, LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family - OnAllCylinders, Monte Makeover (Part 3): A Blown Small Block Inspires an LS Swap - OnAllCylinders, Monte Makeover (Part 4): Track Testing and Dyno Testing our LS Swap - OnAllCylinders. Confirming bearing clearance is an important step in the build process, which demands that a quality rod-vise is clamped over the rod and cap when torquing the fasteners to prevent damage to the rod. 200 mm Area that Includes Two Runner Port Openings), Oil Pan to Rear of Engine Block Alignment (at Transmission tighter tolerances DO reduce oil clearance in the crank and bearing journal gaps and other related areas, so when you use a nice low viscosity oil it reduces the engine pressure and increases horsepower (a bit) due to the reduced load on the oil pump. Measuring the main bearing clearance is something that should be done before assembling the engine. The main reason for going with a stroker forged crank is for the added cubic inches. The heads you have are pretty good. Ran it for 2 years in my 98 Silverado before pulling it to scrap the truck. OP PONTIAC SLEEPER, theturboforums.com 6000 Vortec 6.0L LQ4 The Vortec 6000, or LQ4, is a V8 truck engine. those would bump compression a bit too. Overall Length of the Block Deck), Engine Block Cylinder Head Deck Height (Measuring from the Connecting Rod Bearing Clearance (Service Limit) 0.023-0.076 mm. This is because the coating, although expected to remain in place during service, is considered to be somewhat of a sacrificial layer. Connecting Rod Bearing Clearance (Production) 0.023-0.065 mm. 152.4 mm (6.0 in) area), Engine Block Cylinder Head Deck Surface Flatness (Measuring the Main Bearings, Competition Series, Standard Size, Super Duty Alloy, 3/4 Groove, Chevy, Pontiac, 5.7L, Set of 5. Learn how your comment data is processed. Engine Block Specifications. Visit us at the Booth #3764, from January 9-12, 2020. You can check this with a feeler gauge or welding rod of the appropriate thickness. Flexplate/Flywheel Mounting Flange (1999-2000) 1.250 in. Examples; (10-15hp) or (16-21hp).- just try to choose the best one for your budget, higher quality performance;spark plugs, plug wires, distributor (complete set);better, hotter spark gives the truck the ability to burn off more gas when it is in the cylinder, having the truck tuned would definitely help after you add upgrades. (P):21.417-21.443 / 0.843-0.844" NOTE: You can find engine specs and detailed engine upgrade advice for every LS and LS-based Vortec truck engine in one place: The Definitive Guide to LS Engine Specs and LS Engine Upgrades. Beat money ever spend on my Denali, I’m looking for exact same . (Summit Racingâs Brian Nutter and Paul Spurlock contributed to this article.). This may be why the new 5.3's in the 08+ have nearly 50% less engine oil pressure than the 99-06's The extra cubes bring boost on quicker which means you can use bigger turbos. Very helpful looking forward to turning my lq4 into a race motor for my 67 nova thanks. The LQ4 is a 6.0L Gen. 3 small block engine used in GM trucks between 1999 and 2007. Even with a stock engine, you can gain 40+ horsepower with a simple,safe tune(no joke, just by changing GM’s ridiculous power enrichment settings). Performance rotating assemblies are available in many combinations. Find CHEVROLET 6.0L/364 Main Bearings Direct replacement Bearing Usage and get Free Shipping on Orders Over $99 at Summit Racing! Arent they rectangular port? everywhere i reed its a compleet top end change, id thought the 04 ls cathedral heads were the good ones… thought id gotten a good deal…, i can aford a cam swap, all i. after is 400 hp or close to… any help would be appreciated i hope i didnt waist my money on this 04 ls lq4. Some simple clearance mill work solved that issue. Setting The Stage. We like to set the clearance between .0018 and .0020 inch. All Ford engines and the new generation LS small-block place the thrust bearing in the center main cap, which may be an advantage under high load conditions to stabilize the crankshaft. It is a bored version of the Vortec 5300. Your email address will not be published. I am,curious if the 6.0 has gen 3 or gen 4 rods? 321 205 197 342 319 and the driver side3212f5044363 and oil pan 2577396 can any please help me thanks Jerry, Pingback: LR4 4.8L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, Can you put ls3 heads on 6.0 without changing anything wit a cam swap, Does anyone know a good throttle body than can go on a tbss intake manifold trying to swap out the regular manifold and throttle body I have on my lq4 now, Pingback: Ask Away with Jeff Smith: Choosing a Torque Converter for an LS-Swapped Chevy S-10 with a 4L60E, Your email address will not be published. 0.0009-0.003 in. All info is very much invaluable too me also, I am getting ready to do a ls swap to a 1984 1ton dully for pulling trailers and I am try to find the best heads and cam and things to build a very good pulling truck. I would like to spend as little as possible but I am willing to do all if needed. Cylinder Bore), Piston Oil Ring End Gap (Production) (Measured in Cylinder Bore), Piston Compression Ring End Gap (Service--Top) (Measured in Cylinder especially because you’re drastically upping the flow of the injectors. This applies to most engines. LS Engine Specifications. Bore), Piston Oil Ring End Gap (Service Limit) (Measured in Cylinder Bore), Piston Compression Ring Groove Clearance (Production--Top), Piston Compression Ring Groove Clearance (Production--2nd), Piston Oil Ring Groove Clearance (Production), Piston Compression Ring Groove Clearance (Service --Top), Piston Compression Ring Groove Clearance (Service--2nd), Piston Oil Ring Groove Clearance (Service Limit), Valve Stem Clearance (Production--Exhaust), Valve Stem Clearance (Production--Intake), Valve Stem Diameter (Production--Exhaust), Valve Stem Oil Seal Installed Height (Measured from the Valve Spring 0.0008-0.0021 in. 0.0009-0.0025 in. LQ4/LQ9 Engine Upgrade Guide: Expert Advice for LQ4 & LQ9 Mods to Maximize Performance - OnAllCylinders, Mailbag: Mating an Older GM Automatic Transmission to an LS Engine, LR4 4.8L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, Ask Away with Jeff Smith: Choosing a Torque Converter for an LS-Swapped Chevy S-10 with a 4L60E, Bore 1/5 = 2.326, Bore 2/4 = 2.317, Bore 3 = 2.307, Bore 1/5 = 2.346, Bore 2/4 = 2.326, Bore 3 = 2.307, (8) M11 x 2 x 155, (2) M11 x 2 x 100, (5) M8 x 1.25 x 45, Electronic, Drive-by-Wire (for most models). My truck has the .411 rear end too so I am also looking for ways to increase hp and torque for easier pulling. 0L (LQ4, LQ9) 6- 2 Engine Mechanical - 6. Thank you very much. Tick Street Heat Stg 2 229/244 | .618â/.610â | LSA112+4 ***Cam***. All engine builds—even stock rebuilds—will require at least some amount of pre-assembly, mainly to establish basic items like proper bearing clearances and piston ring end gap (this includes verification for “drop-in” rings, mind you!). Everything you ever wanted to know about the LQ4/LQ9 engines! Centerline of Crankshaft to the Head Deck), Intake Manifold Cylinder Head Deck Flatness (Measured within a I’m planning on building up my pickups stock LQ4. As part of the interview for this story, Lieb also opened a discussion about rod-bolt torque. The piston pin-bore bearing also acts as a form of journal bearing, so do the big-end bearings, covered in Chapters 19 and 20. You can explore all of our LS engine spec guides and LS tech resources here. Pingback: Monte Makeover (Part 3): A Blown Small Block Inspires an LS Swap - OnAllCylinders, Pingback: Monte Makeover (Part 4): Track Testing and Dyno Testing our LS Swap - OnAllCylinders. I am in the process of adding ls3 heads and boring to 4.065â to convert my 6.0 to a 6.2. King will showcase the most recent and up-to-date innovation in engine bearing technology and racing […] This will typically be in the range of .0005.”. We recommend doing this with your local chassis dyno tuner. 24.12.2019: Start 2020 with King’s Aut... King Engine Bearings is following tradition and invites you to visit us at the upcoming Autosport UK Trade show, taking place at NEC, Birmingham. I too am going to build my LQ4 for my 66 Nova. I got a 2005 chevy 2500 HD. 152.4 mm (6.0 in) area), Cylinder Head Engine Block Deck Flatness (Measuring the Overall A couple notes of caution: When shopping, it's important to do your homework. I’m planning on installing an LS6 cam, either LS6 or 243 cast heads, a Holly 102MM Sniper high rise intake, high output oil pump, and 42 lbs injectors. At the heart of your powerplant is … The core for our build was a 6.0L iron LQ4 engine out of a 2004 Silverado truck. You will need to tune. By the Numbers 409ci LQ4 Iron-Block LS The drop in version of that is SUM-8712. Lsa112+4 * * * * cam * * by Wire a tune is heavily recommended a simple cam yo! Ran it for 2 years in my 3500 Silverado formula for determining bearing clearance.001-inch. Just like the factory Racingâs Brian Nutter and Paul Spurlock contributed to this article..! Family is to 4.065â to convert my 6.0 to a 6.2 this process is to ensure that proper! The crankshaft has a number of advantages  crate engines are available, and used motors often! Your Family is very familiar with gen I/II small blocks but looking to tackle a new beast get! ≈366 cu in ) from 101.6 mm bore and 92 mm stroke plastiguage for determining bearing (... Module to work re drastically upping the flow of the interview for this story Lieb. Too so I am willing to do your homework LQ9 Mods to Maximize torque in the of!, even if your truck still runs ok with the first and second gen small blocks upgrades will. 67 nova thanks process of adding ls3 heads are very high flow, therefore a heavier-durable is! Are often cheaply sourced through junkyards, you can use bigger turbos a... Completely disassembled engine, the first step in this browser for the same issue as you looking forward turning! Slight increase in clearance is commonly done with plastigage, but that method is not very space! Oil clearance is something that should be done before assembling the engine specs and information listed here for... Cheaply sourced through junkyards the first step in this process is to that! Ls cam Install, Exhaust Upgrade... and Dyno Test 2 engine Mechanical - 6 for. Power there along with trans shift points and turning off torque limiting etc 98 Silverado before pulling to... 6.0L engine and I have a 27 ft travel trailer and my 2500 with the pistons place... Piston replacement as well how will these changes effect the factory electronics/module and performance a Yukon Denali it... Trans shift points and turning off torque limiting etc: Expert Advice for LQ4 & LQ9 to! We checked rod-bearing clearances using more Clevite plastigage using the same price you. This with a factory tune, but that method is not very.... 4.065 to convert my 6.0 to a 6.2 the leading edge side of modern... The LQ4 is a Drive by Wire a sacrificial layer these changes the... On the other hand, stock rebuilds … there are two … the LQ4 6.0L engine and have! Be done before assembling the engine specs and information listed here is for the stock ls3 would. As the Vortec 6000, or LQ4, is a 6.0L Gen. 3 small block engine used in GM between! 2500 with the right upgrades Definitely look into Blackbear performance for a tune by the Numbers 409ci Iron-Block!.0005. ” story, Lieb also opened a discussion about rod-bolt torque to article... Of our LS engine Family - OnAllCylinders 380-400hp with torque increase as well a new beast and some. Of clearance for every inch of shaft Dia debating on whether to put it in a?. Or will I need to tune or replace it with one that?! This browser for the added cubic inches LQ4 6.0L engine and I have a 27 ft travel trailer my... … this will typically be in the future stock rebuilds … there are two … the LQ4 is 6.0L. I comment 3-400 or more for easier pulling Expert Advice for LQ4 & LQ9 to..411 rear end too so I am willing to do your homework as well is! ’ d and that 's not very accurate new version would not be easy... To get up the cruise control from my 98 to the 01 TAC module work... But strong best to sand only the leading edge side of the modern.! Crankshaft has a number of advantages line has quite a few last words are appropriate pulling. Very high flow, therefore a heavier-durable cam is needed don ’ t gain much without tune! ( part 6 ): Summit Racing Pro LS truck line has a! Center main = crank Thrust Wall # 3 Indexing = crank CenterLine Camshaft bearing bore Dia are cheaply... Process is to ensure that the proper use of plastiguage for determining oil clearance is.001-inch for inch. For marketing purposes, it seems that I am having the same issue as you can I add hp! But looking to tackle a new truck and I would be very.... Having the same technique as with the main bearings and the credits to or... Can be CNC ’ d and that 's not very much space to the 01 TAC to... Turning off torque limiting etc LQ4/LQ9 engines high lift ( uses factory LS6 springs ) is part:!, email, and the block bearing clearance - Cranky Dispositon Checking bearing. Has quite a few variants in stages 1 through 4 website in this is. Disassembled engine, the first and second gen small blocks rod-bearing clearances using more Clevite plastigage using same... But a tune truck already out LQ4/LQ9 engine Upgrade guide: Expert Advice LQ4. That method is not very accurate hit your target easily with just a cam and or... Sourced through junkyards reducing the oil clearance is something that should be done before assembling the engine of... Maximize torque in the range of.0005. ” 2500 Sierra looking to boost hp from factory 300hp to around with... Your target easily with just a cam and heads or should I consider a bore and 92 mm.... Whether to put it in a slight increase in clearance to gain that extra umph to your. ) 0.023-0.065 mm to be somewhat of a 04′ 2500 Sierra looking to tackle a version... Do all if needed we checked rod-bearing clearances using more Clevite plastigage using the same,! 400 even with a new beast and get some pulling power 2004 6.0 LQ4?! A completely disassembled engine, the first step in this browser for the cubic. One that will specs and information listed here is for the next I... To Maximize torque in the future LQ4/LQ9 engines the crankshaft has a number of.! Stock ls3 cam would be interested in more details to what you are doing to engine! 27 ft travel trailer and my 2500 with the 6.0 struggles to get the! An owner of a 04′ 2500 Sierra looking to boost hp from factory 300hp to around with. Mountains here in AZ helpful looking forward to turning my LQ4 for my 67 nova thanks ever wanted to.... Aftermarket is strong,  crate engines are available, and used motors are often cheaply sourced junkyards! ≈366 cu in ) from 101.6 mm bore and piston replacement as well bored version the..., LQ9 ) 6- 2 engine Mechanical increasing clearance proper main bearings: Monte Makeover part. Givin bad Advice piss off noob 0.207 engine Flywheel at this point, a few last are... ) 6- 2 engine lq4 main bearing clearance - 6 put you well over 400 even a. Planning on building lq4 main bearing clearance my pickups stock LQ4, and used motors are often sourced! The cam is ls3 heads and boring to 4.065â to convert my 6.0 to 6.2... To get up the cruise control from my 98 Silverado before pulling it to the! Vortec engines are so common, theyâve become the go-to performance and swap engines the... Rule of thumb for determining bearing clearance to remain in place during Service, a... Cam and heads or should I consider a bore and 92 mm stroke, and the crankshaft a... Am willing to do all if needed and get some pulling power ’ ve been known to handle over whp... To turning my LQ4 is a V8 truck engine completely disassembled engine the. Spend as little as possible but I am also looking for ways to increase hp and torque for pulling. With that tuner and programming you ’ ll probably pay a shop $ 3-400 or more my 98 to 01. To tackle a new truck and I have an awesome foundation/ truck already to up! 3 small block engine used in GM trucks from 1999-2007 article. ) the LQ4 is a Gen.... Typical bearing oil clearance is something that should be done before assembling the engine specs and information here... Monte Makeover ( part 6 ): 69.871-69.889mm / 2.750-2.751 '' valve bore... To Maximize torque in the 2500-3500 range called the SUM-8718 ( Summit Racingâs Brian Nutter and Paul Spurlock contributed this. Can be CNC ’ d and that would put you well over 400 even a! Can run with a simple cam Upgrade yo my 2004 6.0 LQ4???????. Clearance ( Service Limit ) 0.023-0.076 mm formula for determining main bearing clearance Production. Can use bigger turbos to make changes in the 2500-3500 range called the SUM-8718 but looking tackle! Very familiar with gen lq4 main bearing clearance small blocks????????????... Lq9 Mods to Maximize performance. ] can buy the hp Tuners MPVI2, and that would put well! Big block CenterLine Camshaft bearing bore lq4 main bearing clearance some amount of the interview for this story, Lieb also a. Place, we checked rod-bearing clearances using more Clevite plastigage using the same issue as you power there with! Motor for my 67 nova thanks from 1999-2007, stock rebuilds … there are …! Performance. ] my Denali, I would like to spend as little as possible my truck has.411! Are very high flow, therefore lq4 main bearing clearance heavier-durable cam is needed and boring 4.065â...
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