Here is an inside look of the GM oem opti vs the MSD billet one peice aluminum optispark distributor. MSD Opti Adjustable timing, one piece housing design, better opti sensor, better opti disk. The MSD unit is thicker and is stronger. It also features brass contacts all around. GM Opti

The methods used here were by me and if you use a different method that is fine, this is just what has worked well with me. Supplies you will need: – SBC damper puller – 5/8 Socket – Ratchet – Torque Wrench – Breaker Bar – Spare Bolt and Washer Removing the LT1 Crankshaft Hub [...]

Tools Required: •Basic set of metric and standard sockets and wrenches. •Sawzall or reciprocating saw. •Dremel tool with cut-off wheels and grinding stones. •Benzomatic torch w/ Mapp gas. •Soldering gun or wire crimpers. Additional Parts: •Idler pulley (Pulley from A/C Delete Bracket works well) •1-1/2” x 1-1/2” x 6” Piece of “L” steel •1-1/2” x [...]

1. The first thing is to relieve the pressure off the shrader valve on the fuel line, located beside the fuel pressure regulator on the rear of the intake. 2. Remove the fuel lines using the correct fuel line disconnect tool. 3. Then remove fuel lines from clip on inner fender. 4. Then Jack up [...]

Many of you are familiar with seafoam, some have no idea what it is. Well, for all those that are interested, seafoam is multipurpose, 100% petroleum product you can pick up at any local auto store (napa, advance, autozone, etc). It is used to clean carbon buildup from your engine, clean your injectors, clean your [...]

The Problem: The 93-97 optispark distribute commonly malfunctions on higher mileage vehicles or if you get it wet. Some people notice immediate problems with the optispark after washing their engine. The Procedure: You will start with disconnecting your negative battery terminal. Then remove all the intake tubing, elbow, maf, etc. Then remove your ICM bracket [...]

The most common question is 2.5″ or 3″ true duals, and here is your answer. A 2.75” (stock) single system is good for a 310hp engine with zero loss… A 3” Single system is good for a 370hp engine with zero loss… A 3.5” Single system is good for a 503hp engine with zero loss… [...]

You have to lay the radiator back almost until the upper radiator hose touches the ABS mounting plate (1/4 inch gap). Pull the condenser out of it’s holding tabs and drop down. Tap down the top of the condenser. Bend the upper condenser hose to fit. Trim the radiator top. Trim the upper radiator support [...]

Many of us still have our stock air filter box in the standard location (in front of the drivers side front wheel well). Some of us have bought cold air intake systems, cut open the bottom of the filter box, or both. Others have different filters, but have them located in the same “hole” in [...]

The problem: When installing 1.6 roller rockers the clearance of the ugly stock valve covers is to tight. The solution: Grind the alternator to clear the taller valve covers. The benefits: Can install 1.6 roller rockers Welding not required Cheaper than $200 composite LT4 valve covers Looks great! The Procedure 1. Remove belt & alternator [...]

Watchdog warning light with buzzer wiring: Normal Wiring with Rely and Switch http://ken.lowrance.com/projects/CSIwaterpump/Default.htm

Supplies: E4 Torx head screw $0.50 Wing nut $0.25 Jam nut $0.10

The Procedure Fix the bolt pattern. The four corner holes are correct, all the rest are wrong. I first filled all the wrong holes with JB Weld, and sanded smooth when dry. Then I bought stock standard V-8 gaskets to locate my new holes. I have 1986 and prior heads so my middle two holes [...]

Here are a few pictures of the LT1/LT4 vs the Edelbrock intake. Edelbrock up close Edelbrock up close Edelbrock vs LT4 LT4 vs Edelbrock Edelbrock vs LT4 Inside the LT4 Inside the Edelbrock Top of LT4 Top of Edelbrock 12367777 LT4 gasket on the Edelbrock Intake 12367777 LT4 gasket on the Edelbrock Intake 58mm gasket [...]

The problem: When you install headers on an LT1, due to the location of the distributor, spark plugs wires burn in the stock location. I went through 3 sets of wires before I switched to the over-the-valve-cover type. The solution: By routing the wires up and over the the valve covers, it prevents the wires [...]