olds 455, tbi which throttle body?

ws6 · Post by **ws6** » Wed Mar 29, 2006 1:36 pm

Hi guys, i am looking to convert a olds 455 to fuel injection. Because no one makes a port manifold that i can find, and i don't have the budget to convert a carb manifold, I am looking to TBI.

The 455 is not going to be a race engine, just a cruiser. Has anyone bought a holley throttle body and used it with megasquirt? i was thinking of the 4barrel projection throttle body with 65lb injectors.

Any thought? I havent found many TBI units with large enough injectors other than the holley units.

69 1/2 Six Pack Bee · Post by **69 1/2 Six Pack Bee** » Wed Mar 29, 2006 3:01 pm

I have a model 220 TBI from a 454 Chevy truck with 90# injectors that I am using on my 402 which is mildly warmed over. These flow 750 CFM. I am sure that is more than sufficient for a 455 Olds.

MiseryQ · Post by **MiseryQ** » Wed Mar 29, 2006 5:03 pm

I have the progressive 85LPH Holley TBI on an Olds 455. If you can find it get it, they work fine.

You just need to use a code with injector staging, or find one with the old 1:1 linkage.

There's also a few other choices for TBIs if you can't find a Holley.