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Manifold reference mod on Quick Fuel 750?

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Old Feb 4, 2014 | 05:01 PM
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Default Manifold reference mod on Quick Fuel 750?

I installed a Weiand 144 on a ZZ4 crate motor using a Quick Fuel SS-750 carb. I need to do the manifold reference mod, but am finding conflicting instructions online. Has anyone done this with a Quick Fuel?
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Old Feb 4, 2014 | 05:14 PM
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This is what I have used as a guide. I personally have not worked on the small 144 SC's Roots and magnachargers is all I have done.

http://www.motorsportsvillage.com/modifycarb.html
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Old Feb 4, 2014 | 11:15 PM
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What did you do about the 10:1 compression?
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Old Feb 5, 2014 | 09:30 AM
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Originally Posted by Ibanez540r
What did you do about the 10:1 compression?
I used 70cc heads, Edelbrock 60759. Won't say I'm 100% happy but can tell you more after I do the carb mod.
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Old Feb 5, 2014 | 10:01 AM
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Originally Posted by sinister kustoms
I used 70cc heads, Edelbrock 60759. Won't say I'm 100% happy but can tell you more after I do the carb mod.
Actually the C/R you want to end up with is in the low 9's. Like 9.2- 9.4 Your other savior is the small 144 SC. It is not big enough to produce very much boost even being over driven to its max rpm. even with only 350 ci it might make 8.5 to 9 psi of boost. That is why they are advertised at 500 max HP units.

The good thing about any supercharger is the massive amount of TQ gain

That carb work I sent you isn't difficult if you have a milling machine. But if you have a Carb shop near you. They probably could do a nice job if you are not comfortable doing it
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Old Feb 5, 2014 | 06:30 PM
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Originally Posted by gkull
Actually the C/R you want to end up with is in the low 9's. Like 9.2- 9.4 Your other savior is the small 144 SC. It is not big enough to produce very much boost even being over driven to its max rpm. even with only 350 ci it might make 8.5 to 9 psi of boost. That is why they are advertised at 500 max HP units.

The good thing about any supercharger is the massive amount of TQ gain

That carb work I sent you isn't difficult if you have a milling machine. But if you have a Carb shop near you. They probably could do a nice job if you are not comfortable doing it
Thanks gkull, I'm working up to it.
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