Need Holley carb part # help

[Louis F.]

I have a holley carb with a List # 3310 and a #3878261-em stamped on the air horn.It came off a 1965 396 corvette.I know it's not correct for the 396, can anyone tell me what exactly it's correct application is. All the carb books I have only list corvette 1953 to 1972 information.#3310 is not listed. Thanks for any help.

[Clem Z.]

Re: Need Holley carb part # help

1965 375 HP 396 chevelle

[Mike M.]

Re: Need Holley carb part # help

you can buy a Holly parts book from Holley.its formally called the "Holly illustrated parts and specs" book . about 15 bucks when i got mine 20+ years ago. gives illustrations, applications and part #'s for carbs and their parts. invaluable reference manual as well as parts ordering book. it lists carb parts #'s and gives the applications. 3310's was an over the counter un iversal aplication carb.its a 780 cfm critter.mike

[Mike M.]

Re: Need Holley carb part # help

clem: you are correct in that the 3310A was a 65 396 chevelle but most 3310's were OTC. we need date code on poster's carb to differentiate. regards, mike

[Clem Z.]

Re: Need Holley carb part # help

the LIST #3310 was used on both the 65 chevelle and the aftermarket carb but the aftermarket carb did not have any GM part #3878261

[Michael H.]

Re: Need Holley carb part # help

I have an old Holley parts book and it shows the 3310 as being the original unit for 65 Chevelle with 396/425 HP (?) and the 3310-1 for service as a universal 780 CFM unit. Wonder if that's accurate?

[Clem Z.]

Re: Need Holley carb part # help

the chevelle HP rating is wrong in the book,the engine in the 65 chevelle was the same as the 396 425 HP 65 corvette except it had a hyd lifter cam and the HP rating was 375

[Clem Z.]

the chevelle was the Z-16 and they only built

enought to be legal for NHRA. i think is was about 200 and it is a rare car so the carb he has MAY bring big bucks on E bay if it has a 65 build date

[Michael H.]

Re: Need Holley carb part # help

Not sure why they refered to it as a 425 HP. That's the first time I've ever seen that HP number for a 65 Chevelle.

[Michael H.]

Re: the chevelle was the Z-16 and they only built

I remember hearing the 201 number for total production also. If the Holley book is correct in stating that the original for Z16 is just 3310 without the -1, that would indeed be a rare carburetor. I have to wonder tho as the Holley book isn't always correct, as we found out from their HP rating for that same engine. I know very little about those cars. I thought they were 360 HP and had a single inlet carburetor.

[Louis F.]

Re: Need Holley carb part # help

Mike, the date code is 834.

[Clem Z.]

Re: the chevelle was the Z-16 and they only built

the engines were idendical to the 425 HP 396 1965 corvette engine except for the hyd lifter cam #3873844. the next year 1966 the chevelle had 375 HP 396 but used a solid lifter cam #3863143 and the corvette was 425 HP 427 as you know.

[Clem Z.]

Re: Need Holley carb part # help

i have found other mistakes in the holley illustrated parts and specs book as far has HP ratings.

[Michael H.]

Re: the chevelle was the Z-16 and they only built

Thanks Clem. I knew something was very wrong when I saw that "425 HP" listed in the book for 65 Chevelle. Seems like everything is correct but the HP numbers. I noticed they also refer to the L88 as a 425 HP instead of the correct 430 HP. Other than that, a very handy book to have.

[Mike M.]

Re: Need Holley carb part # help

date of 834 would be 4th week of march, 1968 so your carb wouldn't have left the factory on a 396 chevelle. rather, it was sold over the counter after march of 68. mike