Post Tagged with: "engine tech"

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LS Engines

LH8 5.3L Engine Upgrade Guide: Expert Advice for LH8 Engine Mods to Maximize Performance

[Editor’s Note: This LH8 engine upgrade guide is part of a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing that we are sharing at OnAllCylinders. […]

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Q&A

Mailbag: Rejuvenating an Old 454 Big Block Chevy

Q: I have a 1973 454 big block Chevy. It has a 8.5:1 compression, stock oval port cylinder heads, a Crane PowerMax camshaft, and Edelbrock Performer intake, and a Holley […]

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LT Engines

LT4 6.2L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More

This is an engine specification guide for General Motors’ fifth-generation supercharged LT4 engine that launched in 2015. GM has built two different engines designated as the LT4: 1996–1997 LT4 – Gen II, 5.7L, […]

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Q&A

Ask Away! with Jeff Smith: Talking HP, Boost & Compression in an E85 427 c.i.d. Engine

I have a question. I am building a 427 cubic inch Dart motor with LS3 heads and a Kenne Bell 4.2L blower. I am looking for maximum horsepower out of […]

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LS Engines / Tech Articles

LS Tech: How to Delete Variable Valve Timing (VVT) on an LS Engine

Variable Valve Timing (VVT) is a system that automatically adjusts valve timing. GM used VVT on the following engines within the LS family. (Summit Racing’s Paul Spurlock and Brian Nutter contributed […]

Mailbag: Building a Potent, Pump-Gas Pontiac on a Budget
Q&A / Tech

Mailbag: Building a Potent, Pump-Gas Pontiac on a Budget

Q: : I have a 1967 Pontiac GTO with a 400-cubic-inch engine that originally came from a 1968 Grand Prix. The 10.75:1 compression engine is rated at 340 horsepower. The […]

With a stream of Renegade 116-octane fuel running through the rails, the COPO LS7 performs best on 31 degrees of timing. SAM Tech varies the air/fuel ratio between 12.7:1 and 13.2:1 depending on the level of competition on a given race weekend. A Holley Dominator EFI system is tasked with engine management duties.
Tech / Tech Articles / Tech Projects

Stock Eliminator LS7: How SAM Tech Got 825 Horses from a Naturally Aspirated, NHRA-Legal LS7

Anyone can slap a supercharger on a stock 505-horse LS7 and pick up an extra 200 horsepower. And thanks to the incredible untapped potential of GM’s factory LS7 cylinder heads, gaining huge […]

Mailbag: Could Your Engine’s Power Loss Be a Sign of a Poor Cooling System?
Q&A / Tech

Mailbag: Could Your Engine’s Power Loss Be a Sign of a Poor Cooling System?

  Q: I own a 1966 Chevy Biscayne with a 468-cubic-inch big block Chevy engine. It has 12:1 compression, Crane 298-degree duration cam, oval port cylinder heads, 926 cfm Holley double pumper […]

Video: How to Choose the Right Crate Engine
How Tos / Tech / Videos & Galleries

Video: How to Choose the Right Crate Engine

If you’ve decided to go with a crate engine instead of the original engine or a used engine on your vehicle build, there are several choices you’ll need to make. […]

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Tech / Tech Articles

Detonation Elimination: 9 Ways to Prevent Engine Detonation

Detonation is a great thing if you’re taking in a fireworks show or maybe watching MacGyver. Inside your engine? Not so much. In fact, it’s probably best if you avoid detonation at […]