I bought a 1" TBI spacer with the same footprint for the BB TB. Came with longer mounting bolts and new gaskets for top and bottom. It sealed just fine.

Quote Originally Posted by C2500 View Post
Stew, I took it over to my local machine shop that did the motor for me and had him bore it out to 2.060.
It took less than a 1/2 hour and he did it on the bridge port..Best part is he didn’t charge me...
You had your 3740 intake bored out? I've heard that it's a 50/50 chance of hitting the water jackets around the throttle bores.