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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Aug 2011 Posts: 32 New Guy | | New Guy Joined: Aug 2011 Posts: 32 | Does anyone have any experience or suggestions as to which jet to use in a Rochester dual one barrel carb set-up? I don't know yet if they are the same but if I have to change one out is there a better jet that I should put in both while I"m at it?
Thanks,
OUP
"when I grow up - please go ahead and dig my grave!"
| | | | | Joined: Feb 2004 Posts: 29,852 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,852 | It really won't matter what jet you use- - - - -dual Rochesters for a 235 flow far too much air for the majority of throttle opening positions, so you'll have lean spots just off-idle no matter how rich you try to jet the carbs. Find a couple of Carter carbs for a 216, and re-position the mounting studs for the narrower spacing. You'll be much more likely to have acceptable low speed and midrange performance, and little, if any loss of high-RPM horsepower.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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