I think I’m currently building what you’re asking for. My goal was 650 when I set out on this build, but most guys with experience are telling me I should be somewhere around 700. Fingers are crossed. Short story:
- 400 block @ .040 over
- 3.91 stroke / 6.70 rod / 1.322 ht flat top piston (basic 470 combo).
- 11:0:1 compression
- Trickflow 270 heads
- Indy 4150 intake / 1000cfm 4150
- Howards solid roller - 259* / 263* @ .050
- 1.6 rockers (yeilds .660 lift after lash)
- 1-7/8” / 3” headers.
- 9-1/2” converter (4200 flash)
- 4.56:1 gears / 30” radial tires.
- 3725 lb (in the beams) B Body.
That combo could hit 700 hp. The cam needs to be exactly what the TF heads want, they are pretty picky about cam timing. You'll also want to make sure the intake manifold is well matched to the heads. Port matching is required with the Indy intakes since out of the box they tend to be rather ragged in that area. A 400-3 intake with a Dominator would give you another 15 or 20 hp on the dyno but it might not go down the track any quicker. You'll just have to try it and see.
