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Old 12-03-2010, 02:59 PM
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holley carb question

i have a old carb from 10 plus years ago. i dont remember if it is a 750 or 850. the choke bell has been milled down and the only numbers i can find are on the throttle body p-32, base plate 12r-4507 bp, metering blk.11184 3. is this enough to tell the size ?

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Old 12-03-2010, 03:55 PM
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Not with those #'s that I know of.

What diameter are the throttle plates?? 1-11/16" or 1-3/4" ?? Or what number is on them??
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Old 12-04-2010, 04:33 PM
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throttle -plates are 1-11/16. they have 180 stamped on them. i can post a pic. if that will help.
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Old 12-04-2010, 04:37 PM
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If they are 1-11/16" it could be 650-700-750-800, they all use the same size throttle plate. 1-3/4" is just used for the 850 or bigger.

Is it vacuum secondary or double pumper??
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Old 12-04-2010, 04:42 PM
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double pumper. if it is not a 850 then it should be a 750. i only had 2 back then 1 of each. sold 1, didnt remember what 1 i stil had.
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Old 12-04-2010, 04:45 PM
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Quote:
Originally Posted by gw1626
double pumper. if it is not a 850 then it should be a 750. i only had 2 back then 1 of each. sold 1, didnt remember what 1 i stil had.
You just answered your own question then.


Cole
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