318 Mopar vs. 340 Mopar

MOPEkidD-3 said

I want to build a high-compression 360 Magnum for my '70 Duster in the future. Iron Ram Magnum heads (home-worked), flat-top zero-deck slugs (10.5:1 comp.), Lunati Voodoo cam, and other goodies, hooked to a Passon A-833 OD and an 8-1/4" rear. Of course you could go with something milder, but 360's are fantastic motors no matter what you do.

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That's basically the 360 I built and I have an A833OD with an 8.25. This engine makes ~370 HP based on 102 mph trap speeds in my car and has run a best of 13.7 in the 1/4. Its not the engine that is keeping the car from reaching the 12's, I have traction issues as shown by the misreable 2.2 60' time on the 13.7 run. I also get 17-18 mpg around town and 21-22 mpg on the hiway.