421 Stroker with Trick Flow Heads/Intake Dyno - Redux

1bad360duster said

Wow looking nice, good luck and interested in the results. As far as cam I meant what was the thought process on the regrind from the bigger 250 @ 50 to the regrind 260 @ .50? Was it the bump in compression or just thought it needed more duration. I’m getting my 418 together and I have almost the same bullet hyd roller. It’s 256/261 at 50. 630 lift with my 1.65 rockers. But I am going to end up about 13.2:1 compression, on e85. I want to shift this thing 6600-6700 max so I think that cam should be about right but wondering if I should of had more duration

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Gotcha. The first cam I got when I did the engine dyno was very small. It ran great and I hit my target numbers, but I left a lot on the table in terms of power. But back then, cam cores were in short supply and that was the biggest one Bullet had in stock without me waiting 6 months for a larger one.

So when I got the 2nd cam version which was 250, I instantly regretted it and had them make it even more aggressive since I was bumping the compression anyway. 260 was what we landed at. That was the most they could get out of it without having to jump to the next family size of core.

Ultimately I want to see what the Trick Flow heads and intake are capable of at the track. This was all an experiment to see how far I can take it while maintaining its "streetability." Which is kind of a joke now since this Scamp will eventually be my full-time race car. But it's been fun. For what it is, Trick Flow's stuff is awesome! But realistically I'll likely be selling this top end after next season and getting a set of Indy 360-1s, which I've had in the past and love very much.