Ok from now on, I will ALWAYS be talking about a 250 that I'm going to use in my 69 buick special that I want to put forged rods and pistons in, turbo on, spa manifold, offy intake, holley 390, turbo cam and valvetrain and will be using 3.23 posi or 3.42 posi rear-end and a 3 speed manual or 3 speed manual w/ overdrive. ALL MODS will be going on the other engine I'm going to get soon. I just put the four barrel on because it was a relatively easy swap and some people reported better mileage.

Where might the turbo hit? On the bottom? Is the adapter just pushing the turbo out past where it would hit the steering shaft? Would I need to make my own adapter? Is the adapter really just a spacer?

My dad is going to use a buick BB 400 with a turbo 400 and 3.42 posi.


69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.