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#1
10-29-2010, 08:08 PM
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Holley P-32 850 Double Pumper
Found a carb in storage today - must have come with other parts because I never remember picking it up. Has 4781-2 on the bottom of the base plate and P-32 on the driver's side upper left corner of the main body, 180 on each of the 4 throttle blades.
Good carb, bad carb, application, value?
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Some guys they just give up living And start dying little by little, piece by piece, Some guys come home from work and wash up, And go racin' in the street. Bruce Springsteen - Racing In The Street - 1978 |
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#2
10-29-2010, 08:32 PM
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Good carb.
 Value,yeah it has some value,actual value will vary depending on condition & such. But they go for pretty good money even needing to be gone thru,so long as they are mostly complete and unmolested. Application,great carb for a healthy 455 or bigger cid engine. Nice surprise find! Wish that sorta thing happened to me more often...  HTH Bret P. |
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#3
10-29-2010, 08:38 PM
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Quote:
A very good carburetor when you can find an older one. Tom Vaught
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#4
10-29-2010, 09:25 PM
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Not to hijack, but what is different about a 4781-6? I just picked one up for my wagon's 455 street motor.
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Darin '64 Bonneville Wagon (sold) 69 Lemans-All motor (sold) 9.81 @ 136.39MPH |
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#5
10-29-2010, 11:55 PM
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Quote:
Probably four corner idle mixture screws as well (but dont quote me on that). Nothing too drastic though. FWIW. Bret P. |
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#6
10-30-2010, 06:49 AM
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Yep, 4 corner idle. It also has the P-32 on the main body.
Thanks.
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Darin '64 Bonneville Wagon (sold) 69 Lemans-All motor (sold) 9.81 @ 136.39MPH |
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#7
10-30-2010, 08:22 AM
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Thanks for the info guys!
Darin - did you buy yours new or used? What did you pay?
__________________
Some guys they just give up living And start dying little by little, piece by piece, Some guys come home from work and wash up, And go racin' in the street. Bruce Springsteen - Racing In The Street - 1978 |
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#8
10-30-2010, 12:41 PM
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I did a partial trade on a used one. Traded my Dominator 1050 for the carb and cash.
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Darin '64 Bonneville Wagon (sold) 69 Lemans-All motor (sold) 9.81 @ 136.39MPH |
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#9
10-30-2010, 12:51 PM
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Quote:
Yep, the 4781-6 received the 4 corner idle modification. The mod required a different base plate strategy, the rear metering block required the addition of the "idle circuits" vs the "bowl purge circuit", and as Bret said "extra small changes were made for cost savings, political/ marketing reasons: PV back-fire valves, etc). I have NEVER had a PV blow out from a back-fire because IF I did my job the engine will not back-fire in the first place. The calibration was still basically the same: 80 P & S jetting, dual power valves, common bleed strategy to older carbs, etc. Tom Vaught
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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