Nope, 79 engine 454 in a 85 C20. I assumed the manifolds were factory for the 85 but idk. Still not sure the back story. My buddy gave me the truck if I would pull and return the th400. He thought is was all factory. The blue paint and thermostatic choke clued me in to the fact that it wasn't stock. The engine code lists it as a 79 10-20 LF-9 (like 190hp?). When cleaning it up I could see it had one stock steel shim gasket and one composite. Had and crane energizer cam but stock chain. I installed a pink HV pump spring in the stock oil pump and added a erson 228/235 cam, new chain, 3/8 pushrods/guide plates and hosed it out. Actually looked good inside for the most part it. I have about $1000 in the swap including all the engine parts, new headers, exhaust, converter, regear and posi rebuild. I will run it for awhile and beat it like a rented mule possibly even putting it on the bottle. I have plans to build a 505-510 someday but this will be fun for awhile.
