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Hey guys, I recently purchased this motor off another member here at the forum. Long story short, this is a boost motor and I was going to turn it back into a N/A motor. Well, I got to thinking, and that's just a dumb idea. This motor is all built and custom and forged parts ready for boost, why go through the trouble to change pistons, cam, etc to make less power anyways. Reason I say less power is this motor made 702hp. I just replaced my trans and torque tube couplers with stock, which can handle maybe 500hp. More reasons to just sell this one and find one that more so suits my needs.
Here's the specs on the motor:
2008 Corvette LS3 Block
-399 cubic inch
-4.0705 bore
-3.825 stroke
-9.66:1 compression ratio
Callies Crank
Callies H Beam connecting rods
Custom Diamond Boost pistons
ZR1 LS9 camshaft
LS3 intake
LS3 heads
Trunion rocker arm upgrade
LS2 timing chain tensioner
ARP Main studs
ARP Head studs
This motor has a lot of good parts in it. So here's the catch. It needs a refresh. I had a machine shop here in Sacramento, CA look at it, they said it needs higher tension piston rings, new rod bearings, new main bearings, crank polish, and hone the block for the new piston rings. This would be an awesome project for someone that knows how to build a motor and has the time. Cuz right now, I don't want it cuz I would have to replace the camshaft and pistons which would require more work on top of that that I don't know how to do. I bought before thinking about it, so my loss, your gain.
I'm asking $4k for it as it sits. Lots of good parts in it, I just don't have the time, don't have the know how, and it's overkill for my bone stock c5. Please pm me for questions, comments, concerns, or for more info. Thanks!
Thanks! The pics with writing on them are from the machine shop the motor is currently at. Everything I've said that the motor needs is exactly what the machine shop says it needs. I'm not an engine builder so if theres false information or anything, please let me know. I have faith in the machine shop, but then again, can never be too careful.
Either way, thank you! Hopefully it sells soon before I keep it and make really bad decisions! Nothin like a 700 hp motor with a stock trans, couplers, and diff lol.
12-02-2017, 12:43 AM
399CI Forged & Stroked LS3
