looking to replace carb with a holly avenger off-roader.My delema is do I go with a 570 or 670 cfm. Motor is 350 sb (well under 300 hp),electric fuel pump, headers,alum intake, mild cam, in a jeep cj7 w/glass body hooked up to a turbo 400 auto. Just give me your opinion,and what worked for you. Thanks
jsmtam90
570cfm will give you awesome off idle low end torque. The power will run out around 2,00 rpm's. Therefore I would use the 670cfm for all around. You can down jet the avenger to work well. I have tuned the 670cfm to work well on 304's
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