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post #1 of 3 (permalink) Old 05-01-07, 05:36 PM Thread Starter
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biggrin Chalk And cheese????

I've finished my 351 and have it sitting in an old bunky fairlane at the mo just to get it all tuned in and make sure theres no leaks before it goes in the XB.Currently the engine stands as a 351C 4V closed heads, roller rockers ,weiand accel manifold,Crane Digital Ignition system,Mild cam 2500-6000,and a 750 Vac sec Holley Street Avenger.Question is and I think I might be talking about Chalk and Cheese here ,but ,would it be worth investing in a Barry Grant Demon 750(Mighty,Road???).I know price wise is a big difference but when we dyno'ed the engine it seemed the holley was starting to suffer at hi revs.I've had the carb tuned and jetted correctly (so I'm told) but still got probs.One more reason is this is the second street avenger I've had on it,1st one had vac leaks through butterfly bushes(brand new).Idea's people???????Ta

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post #2 of 3 (permalink) Old 05-02-07, 08:28 AM
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Re: Chalk And cheese????

I run a edelbrock 750 vac sec and its been perfect, a dominator would be the best bet, you might of had a power valve, jet prob on youe existing carb

my need is speed
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post #3 of 3 (permalink) Old 05-12-07, 02:05 AM
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Re: Chalk And cheese????

i run a 650DP mighty demon on my 302 windsor making about 450hp, it works a treat!
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