Ok boys. This is what I have so far on the 413 build.
11.5 com. .20th over stock
H beam rods.
Duel plain intake
268 in. 278 ex. .500 lift.
250 c.c intake runners with 208 in. 181ex valves.
This will make me 1000hp at 7500rpm and 744 fpt at 6500 rpm.
I hope this will hold together Or will it bust. Time will tell.