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Originally Posted by SkiDoc
(Post 4917794)
I don’t know that it was the head gasket? Do you see something?
On the forensic examination the raw water pump plastic body had a section missing so I think it overheated. Both banks had the same water in them so I don’t think it was an exhaust manifold because I don’t think 2 would fail at one time. I think water got sucked back into the engine from the exhaust. Flappers not working. not saying this is your problem, but it is a problem |
Originally Posted by boatnt
(Post 4917800)
https://cimg5.ibsrv.net/gimg/www.off...1dca10cce.jpeg
not saying this is your problem, but it is a problem |
To answer the opening question, click here:
https://www.cpperformance.com/p-7395...for-chevy.aspx and after reading that, click on the installation instructions on that page. And there you have it. :) |
Thanks for the replies, Good find SB makes sense now. Yes didn't even really notice the head gasket not lining up with that water port.
It is a different build. It has 990 GM heads, flat tappet hydraulic cam, 445 block, almost like old school LS7. The numbers on the block say that it could be either 2 or 4 bold main. It has pistons with big domes. I still dont have it pulled because my little tractor won't quite lift over the transom. I cleaned the cylinders up a bit and surpisingly they look good. I thought for sure it would be trash. I plan to pull the rest and check out what I've got on the bottom end and go from there. I may rebuild a 496 or start from new. The bore is crudely measured at 4.250 with calipers, |
https://cimg8.ibsrv.net/gimg/www.off...afa2cbeed.jpeg
https://cimg9.ibsrv.net/gimg/www.off...2f8bc8d6b.jpeg https://cimg0.ibsrv.net/gimg/www.off...790851cb8.jpeg Got it all disassembled and ready to go to a machine shop. I am going to do a 496 rotating assembly. I haven’t decided whether to use the 990 heads or go with some aluminum ones. I’m going to go to a roller cam though for sure. |
stand that crank up when not in the block.........:D
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