Mad Dart said

So it's a pump gas engine if I'm reading it right? 12.5:1 compression ?

I say 510 Hp if it's pump fuel 500tq. Reason is if it is pump fuel, you will be most likely have to keep the timing under 30* so it don't detonate which will rob a bunch if power.

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crackedback said

Pump gas 91-93 octane no chance... E85 it will run well.

Who knows for numbers. Seen too many dyno queens get waxed by much lower rated engines from other dynos. If it makes 600hp and runs 120mph in a 3000# car... sum ting wong!

It should make at least 550/520 with decent headwork and tuning

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