tbi 454/700r4 swap from carb 383/700r4 originally tbi350/4l60e

[dave w]

I think maybe use the carburetor on the 454 crate engine? Then later on when the 700R4 gives up, install the TBI and 4L80E then. Keeping the carburetor helps the budget and saves time.

My personal choice for the Yukon, would be nothing like most people would do. I would use the 1996 ~ 2000 454 Vortec MPFI intake on the 454 crate engine. I would modify the original 95 Yukon computer for MPFI mode, and install a 4L80E.

The pics below are a few years old, from a 454 Vortec conversion I did.

dave w