whitehooptie

I've been out of the game for a long time, but have always enjoyed my LT1 car. I've been driving it again lately and have been looking at what is available now.

The car is back to a 355 stock bottom end. No ported heads, intake or nitrous anymore.

My question is, are these heads worth anything on a stock bottom end LT1? I see the 185 and 195 runners, but that seems a little excessive on this motor.

I also noticed that Edlebrock is making an Air Gap intake manifold. Again, worth anything at all?

I've got a fairly large cam in the car. It's a Lunati SBC grind somewhere around 242/248 @.050 on a 112. Lift is somewhere around .550" with the 1.5 rollers in it.

I'm not trying to win races, but do like having some Umph to make the car go.

Injuneer

Stock LT1 heads are 170cc, LT4 are 195cc. Advanced Induction opens up the LT1's to 190, 195 and 200cc. They can make 600HP with the Trick Flows opened up to 215cc.

The Edelbrock heads are not very impressive. Edelbrock claims 24HP gain for the heads. Trickflows are better, but not necessary unless you are looking for over 500HP. But stock LT1 heads can be ported to produce 500HP for less than the cost of the Edelbrocks or Trick Flows.

The Edelbrock air-gap manifold offers no advantage over the stock LT1 intake. It was developed in the mid-90's (I saw a prototype at an NHRA even in 1995) but they never sold it because it did nothing. Only with the stopping of production of the GM LT4 intake has it been offered for sale. I've seen dyno tests in a magazine that indicate the loss of plenum volume, resulting from raising the floor to provide the "air-gap", hurts high performance applications. Again, stock LT1 manifold is fine, with minor tweeks by the shop that ports your LT1 heads.

Go to Advanced Induction or Lloyd Elliott to see what is available.

http://elliottsportworks.com/

Advanced Induction - LTx Performance Parts

Injuneer

And this is far from "Advanced Tech"... a forum that has outlived it's usefulness.

Moving.