Hi guys, got a friend with a 3700lb Chally who currently races in our NSS class with his 440, He's just bought a std. bore 400 block (3698630 400*8) and is looking to build a 650hp+ stroker.
The car has a good chassis going 1.54 60's@11.0's>11.1's@121 best. Caltracs etc., QA1 shocks etc.etc.. you get the picture. A built converter will also be acquired, goal is 10.40's>50's

So he has a pair of 300cfm@.600 Eddy heads currently which he was thinking of using for this 499>512 motor purely because of money and the lack of it. But that may change, TF heads are £4k to get them here. I think he's going to struggle some with those heads to get 650hp-ish on pump, going to take a big s/roller for that?
Only real parameters are V-power pump gas as its still driven on the street a bit. Looking at either a Scat or Eagle kit or ?
What say you guys who've been there and done that given the mentioned facts. Cam recommendations would be helpful, sft or s/roller specs, 10.9cr sounds like it would be max on V-power cam dependent of course.
thanks