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Author Topic:   331 carb recomendation
V8 Thumper
Gearhead

Posts: 4681
From: Phoenix, Arizona
Registered: Dec 2001

posted 03-25-2002 10:37 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
I'm preparing to build a 331 with Trick Flow heads (2.02/1.60), RPM airgap, Hooker SuperComps, Comp 270S, MSD 6AL. Four speed, 3.70-ish gears in a '65 Mustang. No a/c, no p/s, no power brakes. I've got an old Holley 3310, a 4150 vac. secondary 780... do you think this too much carb for primarily a streeter?

Right now, it's got 68's and 72's.

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bluestreek
Gearhead

Posts: 1724
From: Athens,GA
Registered: Jul 2001

posted 03-25-2002 10:47 PM     Click Here to See the Profile for bluestreek   Click Here to Email bluestreek     Edit/Delete Message   Reply w/Quote
Since you already have it, you can't go wrong by trying the 3310 out. It may be a little big, but it is a vac. sec. I've used one successfully on a strong 289 or 302 many times.

BS

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V8 Thumper
Gearhead

Posts: 4681
From: Phoenix, Arizona
Registered: Dec 2001

posted 03-25-2002 10:50 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Cool, that's my thinking too... I've already got the thing, might as well run it.

What do you think about the jetting? How about power valve sizes?

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bluestreek
Gearhead

Posts: 1724
From: Athens,GA
Registered: Jul 2001

posted 03-25-2002 11:42 PM     Click Here to See the Profile for bluestreek   Click Here to Email bluestreek     Edit/Delete Message   Reply w/Quote
The one I have on the shelf, that was pulled from a 12 sec. 289 Falcon, has 72 in the front and 75 in the rear, so the 68/72 that you have is not that far off. A fresh Holley Trick kit (HLY-37-933) should have all the other parts you need, if it doesn't already have a kit installed.

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