I'm in need of the diagram for the throttle control with part #'s for a 55 Olds 4 BBL set up on a 324. I'm trying to convert from 2 BBL to 4 BBL and there are some small differences I'd like to confirm so I can round up the correct parts. A good resolution picture would be helpful. If anyone has a 55 Olds 4 BBL linkage set up they would let go of I'd appreciate a reply also.

 

The closest I could find is one for a 1956 Oldsmobile. It is similar to the 1955. I made the conversion you desire many years ago. I did it using a donor car. You didn't say which transmission you have. The linkage is different depending on the transmission. I assumed the Hydramatic. If originality is desired use the 1955 4GC carburetor. If you'd prefer the "improved" version, get the 4GC from a 1956. It's a direct bolt on. It has the auxiliary throttle valve assembly on the secondaries where the 1955 doesn't. Anything newer than 1956 has different bore sizes.

 

I've got a 1955 Olds 88 parts car that was a 4bbl 324 car. I've made a commitment on the carb to another member, but the rest of the linkage is still there.

John

 

Here's what I've got. John

DSCN2332.jpg

DSCN2333.jpg

DSCN2334.jpg

DSCN2335.jpg

 

John I'd be happy to get the linkage from you. Looks complete. Kinda stuck without it. I have the carb and manifold ready to go. How much would you like? Zip is 98382.
Ozzie, there is one item on the 56 linkage diagram (Bellcrank to throttle auxiliary B/crank) which is part #564737 on a 55 but isn't on a 56. Not sure how important that is so the reason for the 55 linkage request.
Transmission is a hydramatic.

 

The thing about the '56 diagram is that all the books assume they all had the jetaway when in fact they weren't installed until half way through the year. That's why the linkage is different.

 

Thanks to 2blu442 (John) for the complete 55 linkage set up. Will clean up nicely. I found the diagram for the linkage arrangement in a copy of the Hydra-Matic manual courtesy of my friend Don.

 

 

base 88 56 olds came with complete 55 hydramatic transmission 56 super 88 and 98 had the jetaway upgrade.sorry for incomplete text