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personally i think you need bigger holes in the heads to match that cam. it'll run like an asthmatic.
I dont know..i have w5 heads in 422 inches that probably arent any bigger/better than those heads, and an even bigger cam 273-280 and my car runs fine.
That combo he has should make 600-620 ponies easy, and get pretty much anything in the 10's and a light car in the 9's.
Don, Your car has 80 less cubes that this motor will though.
The car will run out of steam up top with that little head on a big motor. Its will work but you would see benefits from going to the larger head as you already know.
If it were me I would run it with the heads you already have now. If your not happy with how it runs then you can step up to something else.
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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