Quote Originally Posted by blackout View Post
I have heard that it will need to be re-tuned for a retunless slope fuel system. but thanks for the heads up.

Sleaper is correct. 3.905 bore and 4.0 stroke. which is 383.02ci.

So I have been looking at the 220/220 cam that thunder racing and texas speed offer and they look like the same duration but way different lift. texas @.581/.581 and TR @.551/.551. which one would be favorable?

I wanted to keep my torque converter stock.

What is the max lift my yellow valve springs on the 243s can take?
if you want a stock manor cam with power go to the cheater from thunder. I always prefer thunder over TSP. Tsp is good but i like thunder better