: Will old carb fit?

11-28-08, 11:49 AM
Hello to all, i recently bought a '90 Brougham with the 5.7L in it. The engine has over 265,000 miles but stills runs better than some newer cars i have owned. My question is that I have a nearly new 2bbl carb that I took off the 68 olds delta 88 I used to own and I was wondering if anyone here would happen to know if it would swap out with the lethargic 2bbl t.b.i the car has now? I am an old school type mechanic and would much rather have the old carb on there myself, also emmision testing is not a problem here in upstate NY so I am not concerned with that. Thanks in advance, sorry for the long post.

11-28-08, 12:13 PM
Fuel injection X carburetor = apples/oranges. Your engine is a 350, right ? Is (was) the Olds a 350 or 455 ??

Different engines, different operating conditions, different fuel rates, different (primitive) electronic controls......

It would cost a fortune, but you could try to find a manifold and multi-point FI conversion system........:sneaky:

11-28-08, 03:00 PM
I thought the 350 was a Chevy?

11-28-08, 03:13 PM
5.7L = 5.7 X 61.02 c.i. = 348 c.i. Close enough. Generic block ??

11-29-08, 11:35 AM
The carb came from a '68 olds w/a 455. I was wondering if the 2bbl rochester from 68 would work on the 350 chevy in the brougham with out to much work other than maybe a pressure regulator for the fuel and a 2bbl manifold from another 350 chev. I like the fuel economy of the 2bbl. but want to do away with the problems of the early style f.i.

11-29-08, 10:03 PM
If it ain't broke . . . . . don't fix it.

Seriously though, get a shop manual and read up on how the fuel injection system works. The TBI system is very reliable and is almost maintence free(change the fuel filter and clean the throttle body). You don't need any special tools to pull the codes on it, the shop manual will tell you how to do read trouble codes with a paper clip.

The only reason I would junk the TBI for a carb is if you are doing a perfomance rebuild on the 350. TBI is great for stock cars.