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Bob Verwold · 12-11-2008, 03:05 PM

After reading this and other posts, I'm wondering what's wrong with my motor! With posted HP running from 650-850 and my 421 is only making 596 HP at 6700 rpm, are the 18 deg heads worth that much of a difference? Or is it in the combo, motor was built by Ohio Crankshaft and I wasn't real pleased with that whole deal but that's water under the bridge.

12-11-2008, 03:05 PM	#11
Bob Verwold Senior Member Join Date: Jul 2007 Location: Fayetteville Ohio Posts: 656 Likes: 0 Liked 0 Times in 0 Posts	Re: Brodix 18X heads??? After reading this and other posts, I'm wondering what's wrong with my motor! With posted HP running from 650-850 and my 421 is only making 596 HP at 6700 rpm, are the 18 deg heads worth that much of a difference? Or is it in the combo, motor was built by Ohio Crankshaft and I wasn't real pleased with that whole deal but that's water under the bridge.