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10-25-2004, 02:58 PM
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#1 | ||
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Registered User
Join Date: Sep 2003
Location: Oroville, CA ( northern California)
Posts: 466
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Holly 750 question
will this carb fit on a stock 71 350 sb? Any major intake mods needed ? any other things I should know?
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10-25-2004, 03:01 PM
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#2 |
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Got Light Emitting Diode?
Join Date: Apr 2004
Location: Newberg, OR
Posts: 2,485
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it depends on if the carb you have is square bore or spread bore
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1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's  (the family car)1993 Cherokee work ride/weekend wheeler |
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10-25-2004, 03:17 PM
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Registered User
Join Date: Sep 2003
Location: Oroville, CA ( northern California)
Posts: 466
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maybe you could explin the difference in the 2?
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10-25-2004, 03:23 PM
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Got Light Emitting Diode?
Join Date: Apr 2004
Location: Newberg, OR
Posts: 2,485
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the bolt patterns are different and so are the butterflys on the bottom. the square bores have 4 evenly spaced butterflys and the spread bores have the larger secondaries and have a wider pattern. you know when you buy a universal carb gasket and it has 8 holes (2 sets)? well square is the smaller and spread is the bigger. if you have the stock intake it should be a spread bore and any aftermarket spread bore will fit. but if its a square bore you need a new intake
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1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's (the family car)1993 Cherokee work ride/weekend wheeler |
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10-25-2004, 04:19 PM
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#5 | ||
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Registered User
Join Date: Sep 2003
Location: Oroville, CA ( northern California)
Posts: 466
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I was told this was a Holly 750. I want to pickup some gaskets, where are the numbers located that says what it is? only numbers I could get was:
list-4777-2 2437 on bnutterfly valves: 172 and 173 P-32 R-5 34R-1784 Sr 5534b SR-1 11 ( the 11 is inside of a small circle) Rich
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10-25-2004, 07:38 PM
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Registered User
 
Join Date: Sep 2003
Location: Waterloo, IA
Posts: 1,147
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According to your list number (4777-2), your carb is a 650 CFM 'double pumper' model 4150. You can use this carb on the stock intake by using an adapter plate (available at your local parts store).
For more info on tuning tips, stock settings, etc. check out www.mortec.com and look under the Holley section - a lot of info there. As far as the gaskets go, tell them you want a gasket for a holley carb - pretty universal. Paul
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'72 Chevy K20 - 383/4sp/205 - SOLD after 41 years in the family Next project - K/5 Tahoe (71 Blazer on 99 Tahoe chassis) Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=789958 |
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