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I need help from a PRO. 351 Boss (quench heads) Is an 850 holley to big??

<font size=-1>[ This Message was edited by: admin on 2/28/06 7:43am ]</font>
 

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Depends on application. What are you doing with it? What Part# Holley? Do you have the ability to tune a carb?
 

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I've got a 750 on my 289 and it runs better than it did with the 650... it all depends on how much power you plan on making. I'd say 350-400hp a 750 is probably about right, over 400hp an 850 would probably work... but like dfree383 said if you can't tune a carb, then who knows.
 

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I have run 750 vaccum secondary with Great success on Street Strip Cars over the years. They are pretty forgiving. Even better than the old 3310's would be a Edelbrock 750, Especially if you are a beginner, They are about a simple as a performance carb gets and very forgiving.

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<font size=-1>[ This Message was edited by: dfree383 on 2/28/06 5:43am ]</font>
 

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as i have said on here before i run an 850 dp w/ manual secondaires on my 289. the others are right when they say there is no carb to big. just have to know how to tune it.
 

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I just moved up to an 850 Proform from a 750 Holley HP and gained 2 tenths on my 331 without any other changes.
Don't know why, all the books say it's way too much carb for a 331, but the numbers don't lie.
 

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What are you doing with it? Is it a race car, Street Strip or a cruiser? Everybodys perferance and ability is different, If you know what your doing the some of the race carbs would be a good choice, if your new at it the its probably better to go with a smaller more street orientated carb. If you try going with a Big Carb and you don't know what your doing you will only get frustrated and be chasing problems. The fun is in driving the cars not working on them.
 
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