Hey guys I'm new to the group, so let me introduce myself. I'm Mike. I own a 1978 C20. Just had a 4 bolt main SBC 350 rebuilt and replaced the original with it. My truck is a running project, but we are slowly getting there. My problem is with the way it is driving. Like I said it's a project, but in my opinion it should drive like brand new since I did just drop $3k in to the engine bay. Over last couple of days the performance has been extremely sluggish. When cruising, the truck doesn't run bad, but when I try and accelerate out of a cruise into WOT, it immediately bogs down and then wants to kick and sputter and backfire. It continues to do this until I let off the gas. The truck does have significant exhaust leaks that I plan to fix. One such leak is at the manifold/downpipe, and then a few other small ones I have yet to locate. Will the leaks cause the truck to bog in WOT, or is it more of a fuel issue? Any help or advice would be much appreciated. Can also give more info on the truck of needed. TIA.
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