Help Identifying Weber Carbs

[69L78]

Can anyone identify this Weber carb setup, I was told the # 3742580 is a GM #?

[Lee Stewart]

They look like pre 1992 carbs as Webber moved their manufacturing from Italy to Spain in 1992.

[Big Block Bill]

Can anyone identify this Weber carb setup, I was told the # 3742580 is a GM #?

They look to be from the Can Am period of Aluminum Big Block Chevrolet Racing days. Bill

[enio45]

contact mike pierce weber carb restorations......he is everything about weber and been around for quite a while

831-975-5365 California

[69L78]

Thanks for all the help, I will let you know what I find out.

[napa68]

Does it appear to be a BBC manifold Jeff? Hard for me to tell from the pics.

[69L78]

Does it appear to be a BBC manifold Jeff? Hard for me to tell from the pics.

Sorry guys, it is a SB

[iluv69s]

Is that a grand Sport setup? Sure looks like it !! If so, you hit the jackpot! Those cars rarely change hands, but when they do, they sell for millions.

I searched for an intake setup for years after I found a set of heads.( I posted a pic of my heads and an original motor. )

Only other intake I ever saw was a member here that has an NOS intake, but it needed finish machining. Maybe someone can find that thread .

[olredalert]

----When Classic Motors restored GS #1 it was restored with a very special 377 small block and a set of crossram Webers that came right out of the skunkworks at the tech center. This set looks visibly the same. When GS#1 was re-restored more correctly by a guy named Jim Purvis it was done with a big block and 4-barrel. You can see a pic of the car in that livery on the Fram oil filter box (I think), therefore I have no idea where the set of Webers and intake went after that. I was shop manager at Classic during this period and GS#1 was restored off sight so I wasn't real close to what went on with that project. I suppose this set could be that set,,,maybe!....Bill S

[luzl78]

If originally installed on grand sport car that is worth $50,000

[iluv69s]

If originally installed on grand sport car that is worth $50,000

Maybe more.. the last GS I saw that sold, went for over 7 mil. !!! And that was a long time ago !

[big gear head]

This is not exactly the same as the one in the picture of the GS. The center shaft for the throttle linkage is mounted to the manifold different. The one on the GS is mounted to bosses cast into the manifold. The other one has stands bolted to the top of the manifold.

[olredalert]

----This set can't possibly be the originals that were on any GS as the set we got on the 337cu inch assembly was basicly NOS, if I remember correctly. Still a possibility that they are similar. And,,,remember that at least two of the GS's were converted to big-blocks, so those two (maybe more) wouldn't need them. I also remember us realizing that the Webers were way too big (CFM wise) for the car to be run correctly. I can't tell from the pics how much CFM these Webers are. Maybe someone can blow the pic up?....Bill S

[luzl78]

They look like 48 ida

[69L78]

----This set can't possibly be the originals that were on any GS as the set we got on the 337cu inch assembly was basicly NOS, if I remember correctly. Still a possibility that they are similar. And,,,remember that at least two of the GS's were converted to big-blocks, so those two (maybe more) wouldn't need them. I also remember us realizing that the Webers were way too big (CFM wise) for the car to be run correctly. I can't tell from the pics how much CFM these Webers are. Maybe someone can blow the pic up?....Bill S

I can get you any pics you need to help identify these.

[napa68]

Is that a grand Sport setup? Sure looks like it !! If so, you hit the jackpot! Those cars rarely change hands, but when they do, they sell for millions.

I searched for an intake setup for years after I found a set of heads.( I posted a pic of my heads and an original motor. )

Only other intake I ever saw was a member here that has an NOS intake, but it needed finish machining. Maybe someone can find that thread .

It was this here........
https://www.yenko.net/forum/showthread.php?t=115528