Just got finished installing my RK sport headers, CC 1.6 pro mag roller rockers, LT4 valve springs, Hard pushrods, OVC wires, SLP pressure plate and new Kevlar clutch disk.
The car has been in pieces for over a month but I took my sweet time to address all issues along the way.

Damn what an improvement at mid to higher RPM's
The power is strong all the way to 6000K RPM. Unfortunately the roads are salty so it is near impossible to get a strong launch without lighting the tires up but I can feel huge gains in all gears. I can also clearly tell I dont have any clutch slip which is wonderful.

I really hope im have a good mid 13 second car here. That has been the goal.
Maybe one day I will go cam and heads but I will wait for a reason to have to go into the engine. I think Im close to a full bolt on car, I dont want pulleys because of charging issues and I dont want NOS.
Anybody have any suggestions for additional mods without going into the engine.
I will be going to the dyno sometime very soon.

Thanks to all those who helped my along the way.
Man I cant wait for spring clean, warm roads.

 

 

Congrats man, simple boltons do wonders for the LT1.

 

Most people who have switched to an electric water pump have claimed around a 10RWHP gain. Might consider one of those. Since you've excluded NOS and underdrive pulleys, after that you've pretty much got the bolt ons covered.

 

the alt pulley is what you want to stay away from because of the charging issues. The crank pulley has nothing to do with the charging system. Some guy just had a thread where he did the crank pulley and a ewp. He said he gained .3 and 2mph in the 1/4. I think those gains are a little high but different cars will see different gains depending on the setup.

 

When you put an "underdrive" pulley on the crank, it turns the alternator slower.....it DOES affect the charging system.

 

If i didnt have 1800 watts in the trunk I wouldnt care that much about the loss of charging.
If I ever have to replace the water pump I will go electric.