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Old 02-18-2012, 06:41 PM
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Motor Swap

I bought a motor that he told me was lt-1, block decked, bored .60 over, crank, rods and pistons balanced, heads ported, new valves and seats.LT4 Hot cam springs installed with all new keepers and hardware. TRW .60 Speedpro Hyper pistons and rods. New GMPP LT4 Hot Cam with 1.6 Stainless Steel full roller rockers new timing set, upgraded coil. I was told The ECU was sent out and reprogramed with all the mod, LT4 knock controller and wire harness. It came bolted to a (rebuilt) 4l60 transmission.
The motor # is 10125327 the number on the aluminum heads is 13951. I pulled a valve cover and everything looks new. It has a red intake with a power throttle body. He told me that it has only been run on a dyno so far
3 hours on motor. Had 450hp. Never heard it run, Also how hard is it going to be to drop this setup into a 96 k1500 4X4?? Motor mounting issues? Please help!! I Hope my gut instinct was right..
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Old 02-18-2012, 06:53 PM
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If he's telling you it's a fresh build with only dyno time, he's blowing smoke you should see from a mile away. A fresh dyno only motor would be clean, wouldn't have dirty cut hoses, dirty drivetrain attached and other plumbing hacked off, like it had been pulled from a vehicle. JMO.
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Old 02-18-2012, 08:26 PM
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I will echo 68NovaSS reply, there's no way that engine just came off of a dyno. You can see dirt on the back of the bellhousing that carries over onto the transmisson, the cut rubber hoses.......unless it was sitting outside behind a garage for a few months......I truly hope you didn't get screwed but hey, buyer beware.
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Old 02-18-2012, 08:37 PM
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Yeah, it's ludicrous that the motor was only ran on a dyno. But that doesn't mean it isn't a good motor, it was just owned by a lying piece of garbage that's all. It does look like it doesn't have many miles, so don't be too bummed about the misrepresentation. If it is a good motor, then it's a good motor no matter if it has a thousand miles on it or three hours. It looks relatively fresh as used motors go so don't sweat it.

As far as it bolting in your truck, that I don't know.

Brian
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Old 02-19-2012, 05:43 AM
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It is externally identical to a sbc. It will take the same motor mounts and same exhaust system as a 350 truck engine for your year.
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Old 02-20-2012, 01:06 PM
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Thanks for all the info.

I'm thinking about taking the motor to a dyno shop before I g through all the trouble of dropping it in the truck, Just to be sure it runs and I have the right ECM, Also to see what kind of HP. Is it a LT1 or a LT4? That motor # is the same for both of them.
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