Making a Holley 3310-3 into an 850 or bigger
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Car: 87 Camaro
Engine: Chevy V8
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Making a Holley 3310-3 into an 850 or bigger
I heard you can interchange different CFM carb parts to build a bigger one.Possible?If so,how?
Daz
Daz
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From: illinois
Car: 86 camaro
Engine: 433 big block
Transmission: jw powerglide 5500 coan stall
Axle/Gears: moser9" 4:11 posi
the venturis and the throttle plates are the difference in carb sizes.if you could finda junk carb and swap the parts?my bro has a 650 and the venturies wereallot smaller than my 750.
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
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Axle/Gears: 12B-3.73/9"-3.89
There's another way to look at it: You can take the fuel bowls, metering plates, vacuum diaphragm, feed line, and choke off your 3310 and put them on an 850.
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Originally posted by five7kid
There's another way to look at it: You can take the fuel bowls, metering plates, vacuum diaphragm, feed line, and choke off your 3310 and put them on an 850.
There's another way to look at it: You can take the fuel bowls, metering plates, vacuum diaphragm, feed line, and choke off your 3310 and put them on an 850.
pls . expand?
Daz
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
In other words, the things that don't have anything to do with flow are what you can take from a 750 and put on parts that flow 850. The body (with booster venturi) and throttle plate determine flow, buy those 850 parts and put the rest on from the 750.
If you've got an 850 that's got bad or missing float bowls, throttle plate, metering plate, or choke, you can take those from the 750.
If you've got an 850 that's got bad or missing float bowls, throttle plate, metering plate, or choke, you can take those from the 750.
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From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
You can buy hi flow carb bodys from Proform.
You can "port" a carbs venturiis and thin the throttle shafts
to increase the flow. A 750 can be tweeked to about 900cfm.
http://www.proformparts.com/
You can "port" a carbs venturiis and thin the throttle shafts
to increase the flow. A 750 can be tweeked to about 900cfm.
http://www.proformparts.com/
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