Have not order either one yet, still waiting to have the heads finished should be in the high 290's on the intake side.

Need to pick a cam....these 2 were speced out by a grinder and a local builder

first one
263/271@.050
.640/.640
106



second one
25x/26x
620/645
108


Thats all the info I was given....not sure where to go from here

basics on the car...355, 12.1 car is 3200# 4500 converter and a 4.56 gear

 

Looks like that motor is going to spin high. DD, lol? You might be able to get away with more comp. depending on the DRC, but then again I'm no expert. Wait till you get the heads and see where they stop flowing. No need to open the valves way past their peak, but enough to allow them to hit the peak flow twice.

 

definately the second one should work better in a 355.