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Jon Kaase Racing Engines Jon Kaase is considered one of the best minds in the world of Big Block Fords and has created many parts to help enthusiasts with their 460 based projects. Gentlemen start your questions…
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Old 04-19-2012, 09:11 PM
bluecoupe 545 bluecoupe 545 is offline
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Default 1000 plus

what would be the beter head to make 1000 plus to the tire motor is going to be a 545 solid roller with a 4.390 bore 4.500 stroke 6.800 rod with 300 nos fogger stock block witch head better for this deal p51 or the a460 single carb cast intake
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Old 04-20-2012, 12:05 AM
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Gonna be a tough go with either of those heads to get 1000hp to the tire with only 545 inches. The A460 also generally works better on a larger bore due to some intake valve shrouding.

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Old 04-20-2012, 12:13 AM
c.evans c.evans is offline
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As said above, you aren't going to make 1000 "all motor" Hp to the tire with a stock block 545, with either head. If you mean 700 Hp + 300 nitrous, then it will be much easier. Count on 18% to 20% horsepower loss due to the parasitic drag.

That being said, the A-460 head is and will always be, the better racing head verses any of the OEM style CJ heads such as the P-51. The ports are much higher up off of the deck with the A-460 style heads.
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Old 04-20-2012, 04:43 PM
bluecoupe 545 bluecoupe 545 is offline
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thats a 1000 total with nos would a 557 be any better?
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Old 04-21-2012, 10:20 AM
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Quote:
Originally Posted by bluecoupe 545 View Post
thats a 1000 total with nos would a 557 be any better?
700 horsepower is attainable with both if that's what your looking for before spray. A 557 would help because of the bigger bore, but the difference would be marginal. As has been said the A460 head has more potential if and when you decide to upgrade the block and supporting items.
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