I am contemplating using my CCC quadrajet on top of a 144 B&M roots blower on my stock 350. I've been told that the carb might not supply enough gas and to go with a DP holley. If my set up goes lean the engine's toast from detonation. Your opinions please.

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I'm sure you will get lots of replies suggesting a holley. However, A CCC Q Jet uses the same secondary metering rods and hanger as the early Q Jets and also the same as the Edelbrock performer Q Jets. Therefore parts are easy to find. The same old tuning tricks that work on the old Q Jets work on the CCC units too. Like filing a notch in each secondary airvalve above the secendary enrichment orifices, enlarging the orifices, or filling the original orifaces with epoxy and drilling new orifaces below the air valve blade.
Get a good book on Q Jet tuning. All of the accelerator pump and secondary tuning tricks will work for nonjCCC and CCC Q-Js, and alot of the primary tricks and idle circuit tricks can be applied too.

Be sure to get a better fuel pump.

The major drawback to the Q-J over a Holley is bowl volume. A better pump will prevent you from draining the bowl faster than the pump can fill it.

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Tracy /AKA IROCKZ4me

• 355 cid
• AFR heads
• Arizona Speed & Marine hydraulic roller cam w/ AFR hydra-rev kit
• modified SLP runners
• TRW forged pistons/ceramic coated
• fully balanced
• Edelbrock headers/ceramic coated
• SLP cat-back
• Paxton supercharger
• Nitrous Express nitrous oxide

My IROC-Z
EFI Performance Club on Yahoo
Club IROC-Z

 

Thanks for the reply. Your right in that holley even needed to be modified for superchargers. They now make supercharger ready carbs. I think that the Q jet could be modded.

The fuel pump is a edelbrock 1721 with 110 gal per hour capacity. I plan to use a marine water seperator filter as an inline filter - it holds about 1 qt of gas.

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