950 Holley HP on a 496 BBC

Old 06-11-2008, 12:44 PM
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P379
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Default 950 Holley HP on a 496 BBC

I need some help in choosing a carb for my 1969 Chevelle. It is a strip only 496 BBC with 13 to 1 compression, Dart 325 Pro 1 heads, Lunati .722/.722 solid roller cam, and a Victor Jr. intake. The car has a powerglide, 10 inch converter and 4.33 rear gear. I have a Holley 950 HP on it now with a two inch open spacer. I am leary of trying it on the quarter mile because of a lack of cfm. I have access to a 1050 Dominator with a 4150 adapter. Should I even give the 950 a chance or go ahead and switch to the 1050?
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Old 06-11-2008, 03:06 PM
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topcat572
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Default 950

Since You have the 950 on there, Id try it. I would have the 1050 bolted to the adapter and ready to swap out. Be nice to see the difference. I ran a Dart funnel ram on my 572. Good luck. TC
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Old 06-11-2008, 05:21 PM
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john858
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like tomcat said just try them to see the difference.good luck
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Old 06-11-2008, 05:39 PM
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kw89425
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i run a 496 mine is 10:5 comp. with a little less cam than yours. i have a 950 on mine i run 1/8 its about right on mine. im thinking the 1050 would probably run a little better on your motor. jmo
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Old 06-11-2008, 05:40 PM
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Tod74
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A 950 hp is not really a 950 cfm carb the way I hear it...can't remember the details. That said I had one on a 454 and it worked well.
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Old 06-11-2008, 05:46 PM
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P379
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Thanks for all the advice. I will let you know how everything turns out. I am going to go out on Friday if the weather will cooperate.
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Old 06-15-2008, 05:39 AM
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nabit
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I run a 850dp that flowed 940ish on a bench on my 496 with 10.7 cc and a .680-.702 solid roller and it works good..
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Old 06-21-2008, 07:00 AM
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vincef
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I have a 750 cfm carb that bench flows almost 1000 cfm. This carb was recommended because I am more street than strip with my 496 engine. Keeping the air velocity up through the carb will make it more drivable vs. a 1050 dominator. I have no personal exp with a 1050 dom but was told that is best for strip only, wide open driving. Won't be very street friendly.
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Old 06-21-2008, 11:59 AM
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The 1050 will be faster if the metering and jetting is correct.
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