Remember that time I let someone borrow my truck?

[79 silverado]

Originally Posted by Keith Seymore

I wonder why they specified up through '85, instead of '86 (a more natural breakpoint being the last year for carburetors) or even up through the TBI years (since it appears you are installing your own intake)?

K

The reason as I would understand it is that it comes down to the one-piece versus 2-piece rear seal design changes... 1986 being first year for the one piece design.

Even the reman engines back when you could get them had a 1986 only option using the older style heads on the newer style block.