6.5l GEP engine rebuild kits

What vendors sell 2002 GEP 6.5l complete rebuild kits including pistons, rings, main/rod bearings, gaskets? Thanks.

Are all of those things bad on your engine? If so, getting a used pull out might be cheaper and surer. Normally if bearings and pistons are trashed. Then, the block and crank might be shot as well.

The GEP 506 block and I can’t remember the casting number of the heads are unique to the engine. Everything else is just a 6.5 Chevy diesel. I think 1998-2002 is the year of the squirter bearings.

Thanks for your response, however I am an experienced engine builder well aware of costs. I enjoy building motors and making mods to improve performance. My challenge has been to locate an engine kit compatible with a GEP engine. I can find individual parts but I am seeking any experience from steel soldiers membership to see if anyone has found a complete kit anywhere. A company, enginepartsonly.com has kits but they are not certain their kits are fully compatible with GEP blocks.

Since this is not a civy engine, doubtful any one has put a kit together. Military mechanics will not get that deep but r&r a bad motor with a depot rebuilt.

OK. You know what you are doing. That makes a big difference in the answer.

The last GEP I had apart I used these guys for bearings, rings, gaskets and TTY head bolts:


That engine was surplussed and threw the #1 rod during a compression test. Turns out it was sold because it had suffered no oil psi and the bearing/crank were already destroyed before it was spun to test. I had a 6.5 with a broken starter mount that donated a crankshaft and other needed good parts. The resulting rebuilt GEP 6.5 runs good.

If you are going to add a turbo and go for power. My suggestion would have been contact Heathdiesel.com. Except going there just now I find they are changing names. Maybe Mr. Heath is stepping down. He built a 6.5 that set the land speed record for them around 160 mph a while back. Great guy to talk engines with. If he is still involved. Another source of information might be some of the marine/boat engine people. Low compression pistons with high boost and big intercoolers.

Before you spend allot of money putting lipstick on a PIG, if increasing performance is important then a re-power is cheaper with a much bigger boost in performance.

Thanks for the reply but I was only seeking info on a parts supplier. The original GEP motor is my preference.