Ls2 compression ratio. 9 to 1, and the stock LS2 cam closes the intake valve (0.
Ls2 compression ratio Seems high to me. , maybe in the 11. If somebody installs an LS3 head to an LS2, you’ll receive 20Whp or more. 989” bore 3. I've run into a wall while I'm calculating the compression ratio for my stock engine. Chevy LS2 Car Engine Specs (VIN U) LS Family = Gen. On this side of the world, the LS2 is most commonly found in the HSV VZ-VE models, while in the US the engine was fitted to a wide range of chassis, including the Chevy Trailblazer, Cadillac CTS-V, and Pontiac GTO. 622” stroke 346 CID 10. I did a cold compression check and all the cylinder were around 210 and 215. Based on all of my research I'v gathered the following numbers on my engine. 0L Engine 6. Mar 24, 2012 · So, I'm doing all the math to plan out a build in the future for my ls2. 4 to 11. 25 mm) Stroke: 3. All volumes are entered in cubic centimeters. 7L Aluminum block and heads 345 HP at 5600 RPM 350 LB FT at 4400 RPM 3. 10. Nov 23, 2004 · This efficiency allows a higher, 10. 5 range for Tier 1 93-octane gasoline. The engine I 2006 Chevrolet TrailBlazer - 4WD | Envoy, Rainier, TrailBlazer, Ascender (VIN S/T) Service Manual | Engine | Aug 3, 2008 · C6 Tech/Performance - Increased Compression Ratio - LS2 - I am interested in increasing the compression ratio on my LS2 from stock (10. Comb. Sep 20, 2023 · Compression Ratio: 10. I have PRC ported heads that I bought second hand. The attached chart (click on it to see it full size, I doubt you can read the thumbnail ) shows that the stock DCR is 8. What additional power can you expect after you replace the OEM parts? GEN III 1997-2005 LS1 5. 6 x 92 Block material: cast aluminum Cylinder head material: cast aluminum Valvetrain: OHV, 2 valves per cylinder Fuel delivery: SFI (sequential fuel injection) Compression ratio: 10. Jun 29, 2023 · C6 Tech/Performance - LS2 compression numbers? - 06 Corvette. It reached 400 hp with a 400 lb/ft torque at 6,500 rpm, and its compression index was 10. 0L LS2 "truck" LS engine. 0L, Aluminum Block, Car Engines Jun 22, 2020 · Throughout the years, there have been a number of legendary powerplants to call the Corvette’s engine bay home. Power was improved from 350 to 400 horsepower, and torque jumped too from 365 to 400 lb-ft (in the Corvette). . I have done the computations for head gasket thickness effects. Dec 21, 2017 · From cylinder heads to the camshaft, here's a complete rundown of all the vital engine specs you need for the 6. 5:1 on the LS6--helping the engine attain 400 horsepower and, we're told, better fuel economy than the Dec 6, 2007 · Just had a question for some of our experts. 9 to 1) by some amount t. What was a good compression ratio to run on a DD LS2 402. 9:1 Horsepower (hp / kw @ rpm): 400 / 298 @ 6000 Torque (lb-ft / Nm @ rpm): 400 / 542 @ 4400 Recommended fuel: 93 Sep 5, 2014 · We take a look at the first GEN IV GM engine, the LS2 and show you a complete breakdown of LS2 Specifications, perfect for engine rebuilds or service. 7L Aluminum block and heads 2001 385 HP 385 LB FT TQ 2002-2004 405 HP 400 LB FT TQ 3. 9:1, higher lift cam, 15% better intake flow, and 20% better exhaust flow. Compression Ratio Calculator To enter a piston dome/dish volume, use a positive number for dome and a negative for dish. Of these, few have been as iconic, or well-received, as the LS platform. Apr 13, 2025 · Use proper fuel: The 10. 5cc Gasket Height = . b. 62 / 101. 9 to 1, and the stock LS2 cam closes the intake valve (0. 5:1 compression ratio Cathedral Port Cylinder Heads GEN IV 2005-2015 LS2 6. 0L LS2, applied for the new Corvette, Pontiac GTO, and Chevrolet SSR. Only thing I can think of why the compression is little high (other Dec 30, 2017 · I had a difference in final numbers only in the 0-10 range in psi. 006" off the seat) at 68 degrees ABDC. Our 364 cubic inch engines Jan 9, 2015 · The compression ratio was also increased to 10. 7:1 Cylinder Bore: 4. Of the memorable engines featured within Oct 25, 2008 · The stock static compression ratio for the stock LS2 is 10. 051 in Bore = Nov 3, 2022 · Compared with the LS1, the LS2 engine has a higher compression ratio at 10. d. I have no problem running premium gas. 4, 6. 622″ (92mm) LS2 Vs LS3: Major Differences LS3 heads gave a higher output during the test period than LS2 heads. Here are my numbers if someone could tell me if they are correct or too high or what are the correct psi reading for stock ls2 motors that would be great! #1=245 #2=250 #3=250 #4=210 #5=240 #6=235 #7=240 #8=200 Stock motor, stock tune, stock everything. Through its many renditions and technological advances, the LS series of engines have been touted far and wide as offering the ultimate in raw performance potential. 065″ (103. 9. The guy said it was stock chamber size. Dec 1, 2022 · In 2005, LS1 was replaced by the 6. 9:1 compression ratio works best with premium fuel (91+ octane) With proper maintenance, LS2 engines regularly exceed 200,000 miles while maintaining excellent performance. 9:1. 0L LS2 V-8 engine, including detailed specifications, vehicle applications, horsepower, torque and much more. Chamber = 64. 0L V-8 LS2 Displacement (cu in / cc): 364 / 5967 Bore & stroke (in / mm): 4 x 3. 1:1 on the LS1 and 10. 45 to 1. 898” bore 3. 25:1 compression ratio Cathedral Port Cylinder Heads LS6 5. Complete information about the GM 6. 9:1 compression ratio--vs. Naming LS2 as the Gen IV small-block, General Motors also created its variations for trucks. ijgypolgwxhpwcnomrdivinhrhatnyqcmibzkvcxjjuofizhmuvawuqgxzxpoaedgceihhz