Holley OE replacement throttle body 87-89

[Desert1957]

Originally Posted by Gill 58 apache

Good information thanks for the reply, a friend told me to put a 454 throttle body on the truck, but i think i would wind up with the same issues you had with the holley. i would just like a little more pulling power out of my truck.

454 TBI's have larger a bore and will only work on an aftermarket intake (Edelbrock / Holley) or opening up your small block intake.

4.3, 5.0 and 5.7 TBI's are all the same CFM with 1 11/16th bores. The injectors are different sizes. The 454 is larger with close to 2 inch bore.

Desert