Decent core for rebuilding?

[cobalt327]

Carb # 17057553. ’77 Olds, I believe. I have 2 of these, complete. Do they have the HUGE main airbleed set-up, or was that a Chevy thing? Is this carb a decent candidate for rebuilding for use on a stock 305 Chevy engine? I'm wondering if I will need to go smaller rather than larger on the internals...

[cobalt327]

Some more reading has me convinced the 17057553 1977 Olds carbs (I have 2) do not have the large Chevy-type bleeds, and one will be a good candidate for reworking by The Book for use on a modified 355 Chevy. The recipes in your book will be used for that carb.

But here's something I'm betting you don't get often- what calibrations are required to make this same 17057553 carb work on a stock 4.3L carb'ed Chevy V6?

The original carb was a 17086047, on a 1986 4.3L V6 Sierra. An engine fire (before I had it, fortunately) has rendered the carb body useless- the booster venturi on one side has melted.

I still have the original carb for taking measurements and/or parts from if they would be of any use, when converting the 17057553 1977 Olds carb to replace the original 17086047 from the '86 Sierra 4.3L (262 cid) V6 (same bore and stroke as a 350 SBC, minus 2 cylinders).

BTW, the front fuel inlet clears the water neck- the neck is offset to one side.
It is being used in an '80 Malibu with a TH350, so there's no issues with the linkage, either.

Thank you for any help!

[Cliff Ruggles]

The 77 Old's is a nice unit, and will work fine on the V-6.  You'd still be better off with a Chevy carb, that has the correct linkage, and fuel inlet location, simply for ease of installation and hooking everything up....Cliff