Having issues with the new 464, so it's coming out. Going back with the tried and true 430 that went 11.70's 11.80s. in my 3500 pound 55' studebaker. 430 had the 430 heads w/stage 1 valves and some home porting. Going to bolt on the ported stage 2 se's that flow 340 from the 464. The old 430 is stock bottom end with forged replacement pistons and a hemi killer cam and sp-1 intake. What's y'alls guess on what it would pick up with the better flowing heads?
It will pick up but the valves will be shrouded by the smaller bore. In the old days the trick was to unshroud by reworking the top of the bores.
Just make sure you don't go past the fire ring on the head gasket and try to stay at least about .030" above the top ring of the piston when its @ TDC if you do decide to unshroud the block.
Not planning on doing a bunch of mods on the 430, just bolting those heads on till the 464 is fixed up. Was just curious what it might pick up with the increased head flow. Wanting to get something running so I can come play at BG. According to how it works out, the 430 might find it's way into a little street rod pickup I'm hoping to build similar to the one below. Autta be a fun little tire fryer.
