just getting some ideas on paper for next rebuild for the 408 and would like some opinions from the guys in the know on this topic.
current 408 uses 230cc port indy head with 11.4 comp and an indy intake for induction.
3.790
1.895stroke
1.250ch
6.400rod
1.688rod ratio

4.000
2.000
1.250ch
6.300rod
1.575rod ratio

4.125
2.062
1.250ch
6.250rod
1.515rod ratio

pistons will be mahle and most likely a custom piston. flat tops for the 4 and 4.125 stroke but a 4cc dome for the 3.79 to make about 13:1 comp on all 3 combos and using a 927 pin. i'd like to have my forged eagle crank offset machined to make to stroke I need. my whole objective here is to build something that will get to the other end of the track the quickest. which would best and why? or would it be best to just rebuild the 408 with 13-13.5 comp and be done? all opinions welcomed. thanks