Finally putting block together wont be a roller this year. but if you guys could help me with a computer dyno that would be great 400sbc + 0.40 block speed pro FT pistons 5.7 rods 3.75 crank 9:8:1 compression 441 heads 76cc ported polished milled. block is zero decked cam i Have two. comp 268XE= @50 224 in 230 ex lift 0.477 intake 0.480 exhuast. the other is a Comp 274XE= @50 230 in/236ex lift intake .0487 exhuast .0490 both are hyd cams waiting for dyno to see which one to put in air gap performer intake ,holley 750 carb 1 5/8 full length headers thanks for all the help