I've decided to sell this since I picked up a 4.3 crank early this year. I'm still early enough in the engine build to sell this shortblock and build a 521.
I bought the shortblock from Dave Miester on here. It's a nice piece and Dave is a stand up guy.
Eagle SIR's bushed and floated for .990 pins
Ross forged pistons, domed with valve reliefs for Blue Thunder "B" heads. Lowered ring lands, good for nitrous. JE nitrous wrist pins
Speed Pro "hellfire" rings
Canton main support and windage tray
Clevite "P" main and rod bearings
Durabond cam bearings
Used set of cometic 4.670" head gaskets (still good)
Block has been zero decked, bored and honed with deck plates for .006" cylinder wall clearance. The entire assembly is internally balanced.
This engine made 6 passes down the dragstrip with 300hp of nitrous to 9.20's at 149 in Dave's Torino. He took it out and made 12 N/A pulls on an engine dyno to test his vacuum pump. It made 675hp N/A shutting off at 7000 rpms. This engine blows no oil and runs excellent.
Asking $2000 plus shipping, that's what I paid. It's a nice piece with nice parts.
Shipping/delivery can be discussed. I may be able to get a break on shipping depending on your location. My Dad works for a nationwide freight carrier. Or depending on where you are at I possibly could deliver for a small fee or meet you halfway, etc...
May consider taking some 6.8 rods and pistons for a 521 on partial trade. Let me know what you have.