Re: 70 C-20 4x4 Suburban Father/Son project
Awesome pictures! The stamp on the piston means the engine has been bored out .050 and you have .050 oversized pistons. The first part of the stamp is the part number.
I believe the roto-master is what Banks used in in its very first turbo kits. If you don't use your mechanical fuel pump, you can plumb your turbo oil return in there. As for your timing chain, I would recommend staying with the factory double roller.
Everything else looks good! Dirty, but good!
One thing not a lot of people know about it that the 6.2L diesel heads have bigger valves than the 6.5L...
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