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#1
05-10-2004, 06:34 PM
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were the venturi rings on these carbs ground off at the factory or were they not even cast in?
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#2
05-10-2004, 06:34 PM
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were the venturi rings on these carbs ground off at the factory or were they not even cast in?
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#3
05-10-2004, 10:17 PM
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Not cast in I believe.
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#4
05-10-2004, 10:28 PM
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John above has it right.
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JLP |
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#5
05-11-2004, 05:23 AM
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The 71 HO carbs are not only lacking the outer rings they are completely different castings. The single booster will extend nearly to the bottom of the main casting. On the other models the inner booster only extends a short distance into the casting. Removing the outer booster ring on std carbs requires completely different calibration specs than even the 71 HO carbs used......Cliff
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#6
05-12-2004, 01:00 AM
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These carbs were considered inefficient at low engine rpm´s so Pontiac went back to the earlier design year after.
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#7
05-12-2004, 02:53 PM
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a few more questions. would a service replacement carburetor not have the two letter plant code on it? also what is the value of a 7041267 service replacement carb that was made by Carter?
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#8
05-12-2004, 03:08 PM
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Mr. May -
As a general rule, service replacement carburetors did NOT have the plant code. A service replacement 7041267 made by Carter is a 1 of none! According to Carter records, Carter made zero HO or RA Pontiac Q-Jets following the 1967 model year. Jon.
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"Good carburetion is fuelish hot air".  "The most expensive carburetor is the wrong one given to you by your neighbor". If you truly believe that "one size fits all" try walking a mile in your spouse's shoes! Owner of The Carburetor Shop, LLC (of Missouri). Current caretaker of the remains of Stromberg Caburetor, and custodian of the existing Carter and Kingston carburetor drawings. |
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#9
05-12-2004, 04:36 PM
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 GREAT! I purchased a carb that doesn't exist. Is there a way to figure out what this thing is?
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#10
05-12-2004, 05:07 PM
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Give me a call during normal business hours.
Jon.
__________________
"Good carburetion is fuelish hot air". "The most expensive carburetor is the wrong one given to you by your neighbor". If you truly believe that "one size fits all" try walking a mile in your spouse's shoes! Owner of The Carburetor Shop, LLC (of Missouri). Current caretaker of the remains of Stromberg Caburetor, and custodian of the existing Carter and Kingston carburetor drawings. |
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