black dawg
1/2 ton status
first question is motor is a 74, what do I need to get for acc brackets to make this serp belt? (right hand ac left hand alt)
looks like finding a 454/th400 prom for my 7747 computer will make the swap real easy. anybody have one or a good source? I have access to a complete truck, but it is a 4l80 truck with the different computer. I will be getting all the accesory brackets, a few sensors, and the throttle body/ intake from it.
Is there a reference somwhere for prom codes?
My TBI 454 with a heavy ass bed towed just fine.well since my plan changes almost daily, I think I will wait on the prom till the motor is in and all buttoned up.
I have the 454 now, and it has oval heads, and I am trying to pick a cam (any suggestions) for it. I also scored a good set of headers for it.
all of the tbi 454 trucks that I have driven (not towed with though) have not impressed me at all. Does the tbi system limit them that much or was it a combo of heads and cam?

The 350 computer won't handle the 454, but I think you might be able to retune it to work, and 4k is pretty high for a BBC, so yu are looking at running hard.will there be a bad port mismatch between my 781 heads and a tbi intake manifold?
has anybody ever ran a 350 tbi unit on a 454? I know that sounds dumb, but I dont plan on turning it more than 4k.