429 Cobra jet heads
+4
Mark Miller
dfree383
rmcomprandy
Roger Dyess
8 posters
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429 Cobra jet heads
Who can set these heads up for a 521 build for a Bracket car ?
Roger Dyess- Posts : 16
Join date : 2017-06-01
Age : 77
Location : Fort Lauderdale,Florida
Re: 429 Cobra jet heads
Roger Dyess wrote:Who can set these heads up for a 521 build for a Bracket car ?
I'll recommend anyone on here who does cylinder heads for a living ... I would choose someone closest to your location.
Re: 429 Cobra jet heads
Don't really need Max effort heads on a 521 bracket motor IMO.
dfree383- BBF CONTRIBUTOR
- Posts : 14802
Join date : 2009-07-09
Location : Home Wif Da Wife.....
429 Co fa Jet heads
Thanks for the advice and effort to do so. I have learned that improving any part of the drive train significantly , ripples through the combinationfront front to rear. It's my heads time to be improved. I have prepared the balance of the combination to handle a step up. I guess I have not done sufficient reasearch to know what horsepower upgrade I can get out of these heads while staying at 521. I'm a horsepower racer no boosters. Can't afford turbos of nitrous rebuilds. Thanks again. I will rethink the question
Roger Dyess- Posts : 16
Join date : 2017-06-01
Age : 77
Location : Fort Lauderdale,Florida
Re: 429 Cobra jet heads
Roger Dyess wrote:Who can set these heads up for a 521 build for a Bracket car ?
A-429 Aluminum CJ heads or cast iron i would think cast iron 429 Cobra Jets?
Mark Miller- Posts : 1897
Join date : 2009-09-01
Re: 429 Cobra jet heads
Agree with Randy.
Also if you are talking about the factory iron CJ heads you will be far ahead using a custom designed camshaft.
Several here that can help greatly with that as well.
Cheers
Also if you are talking about the factory iron CJ heads you will be far ahead using a custom designed camshaft.
Several here that can help greatly with that as well.
Cheers
68galaxie- Posts : 349
Join date : 2010-04-13
Location : Edmonton AB
Re: 429 Cobra jet heads
i just took my A429 cjs off the 514 to be replaced with the p51s, motor is mild nothing too crazy, been 9.12 @148. 14:1 comp.
Rickytx630- Posts : 100
Join date : 2016-01-18
Re: 429 Cobra jet heads
Rickytx630 if you need a new home for those a429 heads I've been on the hunt for a set
Lord_Vader- Posts : 3
Join date : 2013-12-28
Re: 429 Cobra jet heads
Rickytx630 wrote:i just took my A429 cjs off the 514 to be replaced with the p51s, motor is mild nothing too crazy, been 9.12 @148. 14:1 comp.
what kind of car is it in?
BOSS 429- Posts : 2369
Join date : 2009-08-10
Location : Ill
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