I knew all along the carb on the Cobra was not the correct 429SCJ specific Holley, but it did look a little unusual. Its got a GM part number on it along with the standard list number. This is what I've got. 3965736 List-4830 Its not on the Holley site and my searches on the web found only that its a Chevy part number probably in the 1969-70 timeframe as its fell between the production Holleys for those 2 years. I had a friend call a shop that had an old Holley book and they came back saying it was a Chevy double pumper carb from the Trans Am program. I'm not comnpletely confident in that and I want to know what it is and what its value is before I try to sell it. I would like to sell it and use the proceeds to get the correct carb for my 429SCJ, hopefully restored. If you have some info on this carb, please let me know.
I found a Chevrolet interchange book by David Lewis that lists the application of that carb as: 1969/1970 830cfm double-pumper used on L88, LS6 and some LT1. I would think that would pretty much guarantee the carb being big $$$ :TU: read the page here
the only double pumper ever used by chevrolet was on the L-88 or ZL1, the 71 ls6 in the vette and 70 chevelle ls6 used a vacume secondary carb. If it is a double pumper with a gm part number, you got something. Is it a 3 or 4 digit date code? 3 digit is before 72, 4 digit is after, or a service replacement IE, less valuable
I have a old Holley Catalog that also list that carb. as a Chevy Trans-Am car racing carb. It did not come on a car from the factory. If my old memory helps, I remember Chevy selling an 830 cfm carb over the counter through their hi-perf parts program. I think that is the carb you have. Hope this helps.
Hello there, :gp: I know it has been a while but I wondered if you still had the 3965736 carb and if it is for sale. I have been told its the right one to use on my TR8! Let me know, I have a shipping address in Henderson Nevada and can pay with Paypal or whatever other means. Cheers Kevin
tr8mate,im not trying to be a smarta##,but are you serious that carb is about the same size as your engine is'nt it,i remember when those cars came out and they were the fastest prodution cars made that year,but still an 830cfm,my L-78 only used a 780.
