Quote:
Originally Posted by bluzurb
yeah that worried me too. so with the 15's i would get more compression and more power out of them? Eventually i am wanting butler performance to build me a 467 motor out of my 73 400 block. Not planning on putting any blowers or anything. And if he had all receipts for the job that was done to the heads that would make me feel better.
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If you`re going to stroke the 400 later, then i`d keep the 6x and have them ported.