Jul 16, 2022 · The LQ4 is found in GMC Yukons and Sierras, Hummer H2s, and Chevy Suburbans, Silverados and Expresses The camshaft is driven by a single chain 55 valve combo › 706 heads on lq4 › 706 heads on lq9 › 706 heads on ls1 › 706 heads vs 862 2-liter supercharged LS9 V8 Ez Pass Nj Violation 2-liter supercharged LS9 V8.. "/> 317 lq4 compression ratio
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317 lq4 compression ratio

Friday 7th May 2010. there's always the left-field answer - reduce the stroke a bit. but, yes the more sensible answers are all here :-. deepen the combustion chambers in the head a tad. fit.
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Patriot Performance 2033: My run a total 24 degrees of timing with 93 octane. These heads provide up to a 65 cfm improvement over stock OEM versions. The 59cc chambers (achieved by milling), will increase the compression on a stock LS1 from 10-1 to 11-1. Based on other modifications, gains of up to 40 rwhp can be expected. Casting Number 317, 035 Head: 2001+ LQ4 and LQ9 6.0 Liter Truck Material: Aluminimum Part Number: 12562317 -LQ4 12572317 -LQ9 12572035 -LQ9 Combustion Chamber Volume: 71.06cc Compression Ratio: 10:1 LQ9 Flat.
Chevy LQ4 Engine Specs LS Family: Gen. 3, 6.0L, Iron Block, Truck Engines Performance Specifications Compression Ratio 9.4:1 Horsepower Rating 300-330 hp Torque Rating 360-370 ft./lbs. Application Information VIN 8th.
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Discussion Starter · #1 · Jan 20, 2009. I am trying to get some feedback on your theories of what makes more power on 91 octane: running a greater compression ratio with less timing advance, or vice versa. I'm currently in talks with my engine builder who is building a 355 for me. The have told me they prefer not to run near the edge of. .

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0L equipped with an LQ4 cam, then topped with a set of 317 heads and truck intake If you are doing any kind of performance reubuild on your LS engine, it’s vital to upgrade to stronger pistons since the weak area around the stock 035 11:1 Compression, Pac 1218 Springs, Yank PT3200 Stall, Comp Cam 220/224, 035 11:1 Compression, Pac 1218 Springs, Yank.

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3L produced 357hp at 5,300 rpm and 383 lb-ft of torque at 4,200 rpm Pace has assembled a complete top end kit for LQ4 carbureted owners, which takes advantage of the L92 cylinder heads and GMPP Hot Cam Kit for more power Before you get all up in arms about how the 317 heads flow like 243 heads and the small-valve 706 heads would be a step-down.

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Changing pistons and/or cylinder heads will allow you to change the compression ratio 3 Truck heads 799 05 and up 4 Designed for: 4 . Designed for: 4 0 Litre Truck Material: Cast Iron - GARBAGE HEAD - AVOID Replacing the motor requires a cherry picker, and there’ll be a lot of parts to transfer Replacing the motor requires a cherry picker, and there’ll be a lot of parts to transfer.
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The LQ4 is found in GMC Yukons and Sierras, Hummer H2s, and Chevy Suburbans, Silverados and Expresses The camshaft is driven by a single chain 55 valve combo › 706 heads on lq4 › 706 heads on lq9 › 706.

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Dec 18, 2006 · Compression Ratio: 10.5:1 Intake Port Volume: 210cc Exhaust Port Volume: 75cc Intake Valve Diameter: 2.00 inches Exhaust Valve Diameter: 1.55 inches Casting Number 317 Head: 2001+ LQ4 6.0 Litre Truck Material: Aluminimum Part Number: 12572035 Combustion Chamber Volume: 71.06cc Compression Ratio: 10:1 Intake Port Volume: 210cc.
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1971 Chevelle. Carb'd 6.0 LS Th350 3.90 12 Bolt. 1972 Greenbrier Wagon 489, 700r4 3,73 12 bolt. Scrapped my plans for 421 stroker sb and 496 bbc, machine shops are too busy around here. Picked up a Gen 3 LQ4 6.0 complete for $600. Has about 150k miles on it. Going to go with a intake, carb, cam and nitrous plate. Have a set of 317 and 706 heads.
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Compression Calculator. Get accurate compression without the guesswork! Get your engine's optimal compression ratio and total displacement in no time flat! Just complete your engine setup, click calculate, and you’re on your way to maximum performance. Use (.

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Jul 30, 2017 · Swapping on the LQ4 head drops the compression ratio of a typical LS1 engine to 9:5.1 The Cast-iron casting are heavy! They are pretty close to the same head except the 317 drops the compression a little bit and the 799 will flow a little better in stock form. For some reason I was thinking the 317 was not a cathedral port head..
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LS & LSX Engine Guide, Vin Decoder. LQ4 Vortec 6.0L V8 "GEN III". Vehicle Applications. 1999–2001 Chevrolet Suburban. 1999–2004 Chevrolet Silverado 2500. 2001–2007 Chevrolet Silverado 1500. 2001–2007 Chevrolet Silverado 2500 HD. 2001–2007 Chevrolet Silverado 3500 HD. 2002–2004 GMC Sierra 1500 Denali.

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Sep 11, 2021 · Best Cam For Lq4 With 317 Heads. A good set of ported heads and a camshaft to compliment should get you very With your LQ4 having dished pistons it will keep the compression ratio more in A cam only 6.0 setup with 317 heads can get you 420450 depending on how....

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Jul 16, 2022 · The LQ4 is found in GMC Yukons and Sierras, Hummer H2s, and Chevy Suburbans, Silverados and Expresses The camshaft is driven by a single chain 55 valve combo › 706 heads on lq4 › 706 heads on lq9 › 706 heads on ls1 › 706 heads vs 862 2-liter supercharged LS9 V8 Ez Pass Nj Violation 2-liter supercharged LS9 V8..
Jul 16, 2022 · The LQ4 is found in GMC Yukons and Sierras, Hummer H2s, and Chevy Suburbans, Silverados and Expresses The camshaft is driven by a single chain 55 valve combo › 706 heads on lq4 › 706 heads on lq9 › 706 heads on ls1 › 706 heads vs 862 2-liter supercharged LS9 V8 Ez Pass Nj Violation 2-liter supercharged LS9 V8..
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Jul 16, 2022 · The LQ4 is found in GMC Yukons and Sierras, Hummer H2s, and Chevy Suburbans, Silverados and Expresses The camshaft is driven by a single chain 55 valve combo › 706 heads on lq4 › 706 heads on lq9 › 706 heads on ls1 › 706 heads vs 862 2-liter supercharged LS9 V8 Ez Pass Nj Violation 2-liter supercharged LS9 V8..

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LS & LSX Engine Guide, Vin Decoder. LQ4 Vortec 6.0L V8 "GEN III". Vehicle Applications. 1999–2001 Chevrolet Suburban. 1999–2004 Chevrolet Silverado 2500. 2001–2007 Chevrolet Silverado 1500. 2001–2007 Chevrolet Silverado 2500 HD. 2001–2007 Chevrolet Silverado 3500 HD. 2002–2004 GMC Sierra 1500 Denali..

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Nov 09, 2010 · Factory camshaft part numbers. The 99-00 LQ4 6.0L used the 12560967 - this is also used in the 5.3L. The 01-up LQ4 6.0L used the 12561721. The 02-up LQ9 6.0L also used the 12561721. Factory Camshaft specs are: 12560967 191/190 duration at .050 0.457/0.466 lift on a 114 Lobe center.. From Garbage to Gold: Mega C2 Corvette Pro-Touring Build with Lingenfelter LS7 Began as a Wrecked Carcass. After rotting in the desert for thirty years, this C2 Corvette Pro-Touring Build got a 630 HP all motor LS7 and that was just the beginning. By Joe Kucinski - June 30, 2022.

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Actually the 317 heads on a stock bore/stock stroke LQ 6.0 is already 10:1 if you get the LQ9 which is simply a flat top piston (like you mention you have). It's the dished piston of the LQ4 that gave those 6.0's the 9.4:1 compression ratio. With your flat top,,,,plus an overbore,,,,plus a 4" stroker crank to reach your desired 408 cubes,,,,on. Feb 13, 2020 · The LQ4 is found in GMC Yukons and Sierras, Hummer H2s, and Chevy Suburbans, Silverados and Expresses. The LQ9 is the high-output version of the LQ4, originally designed for Cadillac Escalade models. It has flat-top pistons to increase compression ratio to 10:1. It was also used in the Silverado SS and Denali models..
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The most popular upgrade is to replace the stock 317 cathedral-port heads on a 6.0 truck (LQ4 or LQ9) or LS2 (243 castings) with the rectangular-port LS3 heads. The large valves in the LS3 heads require the 4.0-inch bore of the 6.0 (and do not work on smaller 4.8, 5.3, or 5.7 blocks), but the results are impressive.
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Jul 17, 2008 · Engine Mechanical Specifications (LQ4 VIN U) Application Specification Metric English General Engine Type V8 Displacement 6.0L 364 CID RPO LQ4 VIN U Bore 101.618-101.636 mm 4.0007-4.0014 in Stroke 92.0 mm 3.622 in Compression Ratio 9.41:1 Firing Order 1-8-7-2-6-5-4-3 Spark Plug Gap 1.524 mm 0.06 in Block.

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Sep 11, 2021 · Best Cam For Lq4 With 317 Heads. A good set of ported heads and a camshaft to compliment should get you very With your LQ4 having dished pistons it will keep the compression ratio more in A cam only 6.0 setup with 317 heads can get you 420450 depending on how....
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The LQ4 is found in GMC Yukons and Sierras, Hummer H2s, and Chevy Suburbans, Silverados and Expresses The camshaft is driven by a single chain 55 valve combo › 706 heads on lq4 › 706 heads on lq9 › 706.

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Ls2,ls3,l6,ls1,lq9,lq4,lsx,boost,lsa,ls7,turbo Jun 01, 2019 · Originally Posted by Boosted86 LS Fuel System Components There will be a decent increase in the compression ratio, and it will help quite a bit in driving Joined Nov 5. LQ9 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More. The LQ9 is a 6.0L Gen. 3 small block engine used in GM trucks between 2002 and 2007. For marketing purposes, it was also known as the Vortec HO 6000 or VortecMAX. The information listed here is for the stock engine. Mechanically similar, General Motors’ LS and LS.
0L equipped with an LQ4 cam, then topped with a set of 317 heads and truck intake If you are doing any kind of performance reubuild on your LS engine, it’s vital to upgrade to stronger pistons since the weak area around the stock 035 11:1 Compression, Pac 1218 Springs, Yank PT3200 Stall, Comp Cam 220/224, 035 11:1 Compression, Pac 1218 Springs, Yank.

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Friday 7th May 2010. there's always the left-field answer - reduce the stroke a bit. but, yes the more sensible answers are all here :-. deepen the combustion chambers in the head a tad. fit.

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LQ4 on the Floor 6.0L Build. The 6.0L was originally offered by GM to replace the 454 big-blocks, and we can see why. These motors offer impressive torque and once modified, can produce even more. After upgrading the compression, cam, and induction system on the 6.0L, we eventually coaxed nearly 550 hp and more than 480 lb-ft of torque.
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Aluminum disipates heat faster, allowing higher compression, which usually means more power. Yes, but in the stock GM application, the compression ratio (as I recall) was kept the same. All else being equal, including compression ratio, the iron head would actually make more power, since it would retain combustion chamber heat better. Sep 28, 2011.

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