I have bought several 6.5 cast# 506 "optimizer" with Navistar heads(GEP is manufacturing their own heads now).
It is a Longblock-not a complete engine, no turbo, intake, exhaust etc. The center mounts turbos or for specific apps, and usually cost more and require fabrications. It is not a"Plug and Play" swap especially in a 84. The pre cups are a whole different topic and much consideration.Ted's is a credible outfit-but there is no warranty and if you dig into military surplus to compare or shop around which is always a wise option.
Michael
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Quote Originally Posted by pwood View Post
I am leaning towards getting a gep 2009 6.5 military long motor pullout from teds trucks n stuff, to retro fit my 1984 GMC jimmy 6.2
I am not sure off what it consists of as they say side mount turbo or centre mount turbo, i am assuming that they are all turbo. I wont be running a turbo so will it mean the engine will have the large pre cups as i want the small ones.
If it does run the large pre cups can i use the small ones out of my 1984 6.2 for better response and economy.
Would it be ok to hook up and go as they say that they are inspected and tested or is that wishful thinking.
Has any one else used one of these motors they claim 10 to 40K use, the price makes it a serious option against a new one for such and old truck.
Thanks for any replies hanging out to get jimmy cruising again