454 dually header/exhaust question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

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SCOTI

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Join Date: Apr 2001

Location: DALLAS,TX

Posts: 22,567

Re: 454 dually header/exhaust question

Quote:

Originally Posted by cag

nice, carbed big block?

TBI. Edelbrock TBI intake w/coolant loop deleted & TBI chip for the ECU. Does ok but the idle hunts (surging @ idle). I don't drive it enough to worry about it but it does fine @ speed.

I've debated swapping to a carb or spending more & switching to a Holley EFI set-up that's NOT TBI based. Most likely it will get a carb because big-blocks in CC duallys aren't exactly efficient so it seems ROI would be nonexistent.

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