Originally Posted By Chip
I have a 1973 400 block (630) that I want to build to 550-600hp for the dragstrip only. So far I was thinking after all my research, is to stroke the engine with Trickflow 240 heads. I read AndyF's Max-Performance book and was thinking 451 or 470...or maybe go right for the 512???

Can you more experienced racers give some suggestions of a build that might work for me? It looks like my budget is about $10K

Below is an idea for a build...

- 440source stroker kit with 2.200 BBC journals
- compression at 11-1 or 12-1 (high octane pump gas or 110 race gas)
- 590 mopar performance flat tappet cam
- Trickflow 240 heads
- single plane intake with holley carb


If you are purchasing a rotating assembly, no reason not to do the 505. And if 600 hp is your target, you can get there blindfolded with 505, trick flow heads and the right solid lifter cam, on pump gas. The MP 590 cam is fine, but there might be a better grind for your combo. Check with Dwayne Porter (fast68plymouth), he is a comp cams dealer and can help you choose the right cam.

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