63chevyll
1/2 ton status
I used to think the 305, over the top manifolds we junk, until a saw a V8 S10 run those and bust out a low 12's at the drag strip

I used to think the 305, over the top manifolds we junk, until a saw a V8 S10 run those and bust out a low 12's at the drag strip
I just finished this on my 79. 2.5" ram horns. Used both driver side manifolds, ground off the generator brackets, and cleaned up the insides from better flow on the 1 and 4.
Driver side was the problem side. The bolt in motor mount needs to be removed and clearanced for the front stud. The clamshell needs to be clearanced on the corner near the manifold until the flange can slide up.
Pass. side required no mods. Bolted up and came down right in front of the starter.
I will post some pics later. (Besides being too loud) this setup really woke my engine up, I went back to a single 3" and the power increase is substantial.