Our friends at Nook and Tranny have published a great technical resource for GM LS engines. We have reprinted the beginning of the article below. To see more, visit https://www.nookandtranny.com/Info_LSx.php
Category: Engine & Drivetrain
1997-2013 Corvette Fluids and Performance
There used to be a time when the underhood fluids were checked every time the fuel tank was filled. When was the last time you did that? We jump in our cars and expect maximum performance and minimal maintenance, with no concern for the extremes the lubricants face. For this very reason, GM decided that […]
C4 Corvette Cutaway Car Parts Gallery
When the fourth generation Corvette was introduced in 1984, many innovative build techniques were implemented. Early Corvette amenities were becoming standard equipment while new options filled every available inch of dash space. The 1984-1989 C4 dash had more modules and controllers to integrate behind an already tight dash area. 1990-1996 Corvettes added more modules along […]
1997-2013 Corvette Exhaust System Installation
The fifth and sixth generation Corvettes are engineering masterpieces. As the first Corvette built for comfortable extended highway travel, the C5 Corvette has plenty of power and torque with excellent fuel economy, and the C6 continues to improve the breed. Accolades aside, the stock exhaust systems leave a lot to be desired. For one, […]
1968-1982 Patriot Header and Exhaust System Install
Original small block “rams horn” exhaust manifolds (produced up to 1979) can be said to flow efficiently. Their flow may not be optimal, but they are better than many of the original equipment manifolds. The idea is to reduce back-pressure while tuning the flowing exhaust gases. The center exhaust ports on the OE cast iron […]
C6 Factory Service Bulletins
For your convenience, below is a list of all C6 Factory Bulletins to date.
1997-2013 Corvette Clutch Installation
Depending on the driving style of the owner, manual transmission clutches can be subjected to a lot of abuse. An owner can wear the disc linings out in just a few days or even within hours. How quickly the clutch pedal is released determines how long the clutch disc will last. Those with a tendency […]
Fuel Injectors Size Selection Guide
For your reference, use the above instructions to calculate fuel injectors size for your Corvette based on target peak horsepower. Instructions courtesy of Precision-Flow. C4, C5, C6 Corvette Factory Fuel Injector Sizes 1982, 1984: 67/68 lb/hr 1985: 24 lb/hr at 43.5 psi or 22.5 lb/hr at the factory 36-37 psi 1986-1993: 22 lb/hr at 43.5 […]
1984-1996 Corvette Cooling Fan Control Modifications
By Chris Petris Illustration by Chris Petris A common question asked among C4 Corvette owners is “why does my engine run so hot? The cooling fans do not come on until the coolant temperature is way too hot”. Federal regulations required high operating temperatures to keep idle emissions at their designated levels. The oxygen sensor […]
C4 Diagnostic Trouble Codes
Codes, Codes, Codes… Have you noticed “SYS” intermittently showing up in your 1990-1996 Corvette’s speedometer display? This means there is a trouble code stored in one of the on-board control modules. When the 1990 Corvette debuted, GM introduced ECM (Engine Control Module) and CCM (Central Control Module) trouble codes. In addition, ABS/ASR (Anti-lock Brake System/Acceleration […]