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Old 11-25-2003, 01:37 PM
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Carb adapters?

I was at the parts store the other day and wandered down the the custom isle, while I was there I noticed a carb adapter that had the primary and secondary holes drilled at about a 40 degree angle. Seemed to me that that would really mess up the air flow into the intake.

Regards
Mark

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Old 11-25-2003, 01:57 PM
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It would have some effect if you were wanting to run at full throttle, top speed but for a daily driver/stoplight bandit, the added carburetion it provides would be much more positive than the slight flow restriction. If used for the purpose of more carburetor and higher power, then it would do the job. Realize, someone who is going the adaptor route probably doesn't have a double throw-down hi-tech motor to begin with nor the $$ to get one.
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Old 11-25-2003, 02:05 PM
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Stay away from them not worth squat. Will cause problems and in most cases less performance. Try not to out-smart the professional engineers
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Old 11-25-2003, 02:21 PM
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What you may have seen was a Q-jet carb to square flange adaptor. They are used to mount a q-jet to an Edelbrock manifold that is disigned for a Holley or Carter/Edelbrock carb. The huge 2 1/4" secondaires on the Q-jet carb will hit the manifold so they have to angle the adaptor holes so it will fit. Pretty common piece. Have one on my sons truck, 'cept we used it backwards, went from a stock cast q-jet manifold to an Edelbrock 600 carb. Works fine.

His new engine will have the correct setup this time! LOL But it worked in a pinch.

Mark
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Old 11-25-2003, 02:30 PM
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Well I have a performer intake and a Qjet and I can see extra mounting holes under the Qjet. I wonder if I'm supposed to have one?

Also a carb spacer would do the same thing right?

Regards
Mark
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Old 11-25-2003, 02:30 PM
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Using the adapter I believe you are talking about to mount a spreadbore carb to a squuarebore manifold it kinda crap.When you use it to mount a squarebore car to a spreadbore manifold,it actually might make more power then some of the correct manifold setups.In the case of a dual plane intake the open style adapter provides some cross flow between plenum halves to halp reduce signal strength to the carb,and the tapers flange actually works a little like a super sucker spacer does to direct induction signal toward the car bores.
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Old 11-25-2003, 02:36 PM
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Quote:
Originally posted by Jag Daddy
Well I have a performer intake and a Qjet and I can see extra mounting holes under the Qjet. I wonder if I'm supposed to have one?

Hi Mark
The Performer comes in 2 styles, the square flange pattern, ( holley and carter) and the spread bore pattern. ( Q-jet)
I have the spread bore version with a new Qjet and I can see extra hole too. The spread bore ( Q-jet) Performer WILL accept the Holley and Carter/Edelbrock patters. The square bore Performer ONLY accepts the Holley and Carters. Is that confusing enough? LOL

Another Mark
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Old 11-25-2003, 03:45 PM
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Quote:
I have the spread bore version with a new Qjet and I can see extra hole too.
That's a relief, I was worried about a vacuum leak around that area. I was thinking of trying to plug it off with a Allen bolt.

Regards
Mark
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Old 11-25-2003, 04:07 PM
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Nope, you should be fine.

Mark
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