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Old 03-20-2020, 07:48 PM   #3
Mike C
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Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,788
Re: Q-jet to square bore

I'm counter to that. I do not like adapters in general and think they are a performance impediment. Losing the adapters lets you set it up with all OEM style parts from pump to carb.

On my kids project Jimmy we went with the Performer intake and a JET Stage 1 Q-jet with the divorced choke (stock style setup) and brand new OEM fuel lines so all metal on pressure side of the pump.

I you have a MUCH higher performance motor I think you can get an Edelbrock Performer RPM with spread bore still. I have a GM cast iron high rise spread bore manifold on my boat which is pretty much a clone of the LT-1 intake but without the square bore which is another option.
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