iamdave0887
Here Comes Chaos.....
506 GEP Navistar cast blocks.
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Found a 929 block, what do you think
- Thread starter chevyCowboy
- Start date
506 GEP Navistar cast blocks.
dieselfuelonly
Member
Old thread here and I know the 599 and 929 are good blocks to build on being from the 91-95 era w/o the piston oil squirters. And of course having a good track record on having way less potential cracks/problems when compared to the 97+ 506 block. I had a question on a 141 casting out of a 1996 van, does this casting 6.5 block have the piston oil squirters or not? Thanks for any clarification.
ak diesel driver
6.5 driver
I believe it does not have squirters
dka99burb
Member
Does anyone have any pics or description of how you tell if it is a 506 GEP Navistar cast block?
ak diesel driver
6.5 driver
it will say 506 in the valley
dka99burb
Member
If 'shopping' at military salvage yards; is there a way to tell what block it is if it is still complete? Any indicators to look for? There are a few of those type yards that I may want to visit.
ak diesel driver
6.5 driver
might be able to see it with an inspection mirror and a flashlight. if it's out of the truck it will say on the rear of the block
dieselfuelonly
Member
I found out it is a non-turbo 6.5 out of a 96 van, so since there is no turbo then it's just about a guarantee that there are no piston oil squirters. Looking at buying it for a project build-up engine to put twin turbos and a 300-350 HP capable mechanical injection pump on. Oh....and I don't even have a truck to put it into yet, but would like to build the engine for fun taking my time until the right truck comes along (to use for a pulling truck).
dka99burb
Member
Are there any tell-tell signs to know its a GEP? GM did a 506 as well, correct?
ak diesel driver
6.5 driver
should be a navistar logo in the valley
Paveltolz
Доверяй, но проверяй
Here's a shot of the valley of OrionThade's "Ted's Engine"
506 block with the Navistar <> in the valley by the N W.
506 block with the Navistar <> in the valley by the N W.
dka99burb
Member
Cool. So I will look for the <> logo when I go 'shopping'. 
I hope they put it on the rear of the engine too. I hope to go next weekend. I will try to remember the camera.
I hope they put it on the rear of the engine too. I hope to go next weekend. I will try to remember the camera.
Paveltolz
Доверяй, но проверяй
That logo is under the IP...bring that angle mirror and flash light as it won't be easy to spot.
dka99burb
Member
That sucks. Is there no other good indicator? Is there nothing else different? Is the logo anywhere else?
If not, I will do my best!
Thanks for info.
If not, I will do my best!
Thanks for info.
NVW
Well-Known Member
Also, if GM is stamped anywhere on the block, it is a GM casting.