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 changing boosters 
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Joined: Sat Jul 25, 2015 2:31 pm
Posts: 76
I read in one of the other threads about AllState carbs having an economical way, at least in my mind, of changing out the boosters. I have 660's carbs on a tunnel ram, is there any downside to changing the boosters to down leg with the step? Everything I have read says it would be better than the straight boosters, but didn't know if the carbs being on a tunnel ram would it hurt anything? Too much vaporization, and no not sure I know what I'm talking about. The car would see limited street use and only a few times a year at the track. Might not even be worth it to change them.

Thanks for the help.


Tue Oct 11, 2016 9:47 pm
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Joined: Fri Feb 08, 2013 5:50 pm
Posts: 2365
The price is right. I bought some, more to have as replacements for Demon carbs. It will require countersinking the body for the nut to fit, best done on a mill. How big is the engine, fuel?


Tue Oct 11, 2016 10:39 pm
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Joined: Sat Jul 25, 2015 2:31 pm
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499 ci, Indy EZ-1 heads, cam is SR I think it was about 272 at .050. Papers in the garage. Using Av-Gas at the moment had thoughts of using E-85 later on.

Now that you say needing a mill for the nuts, that might be an issue.


Wed Oct 12, 2016 8:23 am
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Yes, the nuts are tapered, they do sell an installation kit but I would at least want a larger solid drill press to do the machining, mill would be best so you don't risk sinking the nuts too deep.


Wed Oct 12, 2016 9:59 pm
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Joined: Fri Feb 08, 2013 2:37 pm
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I wouldn't screw up a good pair of 660's fiddling with the boosters unless they were already screwed up, fire damage or broken, missing, etc.


Thu Oct 13, 2016 2:23 am
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Joined: Sat Jul 25, 2015 2:31 pm
Posts: 76
Tuner,

thank you, I was just wondering if the effort was worth it. There is nothing wrong with them that a little tuning wont fix. I did install a wide band, just haven't been to the track to get any results.

Thank you


Thu Oct 13, 2016 8:04 am
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