Quote:
Originally Posted by 74Grandville
which version of the 46 heads are these? 69 or 73/74. if they are 69, i would install harden seats on the exhaust and go with the small valve head. The 69 version have smaller chambers, around 72cc. I would run something like a SPC-5 cam (066).
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Good point. I forgot that the 73/74 heads might be a possibility. I just assumed it had the heads from 69 swapped on. Those would make for a low compression engine. A bonus would be if they were screw in stud versions.
I would stash away the 670's. Or sell them to fund the project. If the 46's were the 70's heads, mill them for a compression bump. If the 69 400 heads, then use as is. Cast pistons, 2800 cam, and get on it. This is for a towing rig, and sounds like a "build with what's in the garage" thing. It doesn't sound like an all out performance effort, so I think it's ok to not go after every bit of ideal compression.
My 16 year old son wants a pre-87 GM truck, or possibly a 70's Nova. I told him that he has his choice of a few 350P's to drop in. One of them currently has a 2800 cam.