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birkey 02-09-2013 03:30 PM

Holly 650 jet size
meant to put holley 650...anyways i have a 358 sbc with an edelbrock rpm air gap, mild cam, stock heads and curious to know what jet size to use. currently has 77 primary and 85 secondary. 6000 max rpm. use smaller jets in both but doesnt run right.

vinniekq2 02-09-2013 07:32 PM

is the carb modified?if not start with 70s in the front,or less

birkey 02-09-2013 09:13 PM

I will have to get back to you with the rest of specs it's a fiends motor but his engine builder had it on a stock 350 and it ran great I guess

birkey 02-10-2013 01:56 PM

Unfortunately both have very little knowledge about tuning a carb. Myself included

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