M998 6.5 motor swap advice

[89M998]

Hi all, recently purchased an HMMWV with a blown 6.5. I've been told that it would be cheaper to put a used civi motor in it than rebuild the existing. Not sure if that's true or not. The shop I'm having it done at said that the internals on a civi motor are the same as the military. Is this true? Their plan is to swap all the accessories off of the blown motor onto the civi so it will basically be a military motor. Also they want to put a turbo 6.5 in it. Question is can I drop a turbo civi 6.5 in it and swap all the accessories off the old motor?

Thanks

 

[Mjvaden]

Advice RUN! LOL There is A lot more to it. Is the shop In Kennesaw Area?

 

[89M998]

No its in Canton close to Milton. How much more work is it?

 

[Mjvaden]

I sent you a PM. it is considerably different.

 

[tomelroy]

it will not be cheap, but now (needing a new engine) is a great time to consider a 6.6 duramax with an allison 6 speed. Then sell off your old parts

 

[Action]

These have GM motors in them. I put a 6.2 from a vending truck in my 1985. swap all of the accessories and electronics over. It was like $300 at a junk yard.

 

[tomcata3]

southern metal in wilmington ,nc sells motors , transmission and transfer case
they strip HMMWV's look them up if you want to save money

 

[wheelspinner]

southern metal in wilmington ,nc sells motors , transmission and transfer case
they strip HMMWV's look them up if you want to save money

The issue with Southern Metals is that they don't ship and everyone gets their pricing and then flips out when someone gives them the cost of shipped parts. It takes a person's time to go there, prepare for shipping and transport to a shipper. More to it than just their low prices (which btw have climbed significantly on some things)

 

[simp5782]

Civilian 6.5s are not like military 6.5s. I am doing the swap at the moment. You also need a body lift of 1inch atleast. The drivers side exhaust would not clear the inside tunnel with stock height on the body. You need a turbo dog house or refab your old one. Also run new exhaust

Sent from my SM-G860P using Tapatalk

 

[89M998]

it will not be cheap, but now (needing a new engine) is a great time to consider a 6.6 duramax with an allison 6 speed. Then sell off your old parts

I'd consider it but I'm trying to keep it all military

 

[Mjvaden]

If you have the money it takes to do a duramax swap. just Buy a M1123 and you will have money left over.

 

[Action]

Civilian 6.5s are not like military 6.5s. I am doing the swap at the moment. You also need a body lift of 1inch atleast. The drivers side exhaust would not clear the inside tunnel with stock height on the body. You need a turbo dog house or refab your old one. Also run new exhaust

Sent from my SM-G860P using Tapatalk

I didn't see where they mentioned a turbo.
Turbo models only have 1/2" spacers. They have different shape tunnel at the doghouse.

 

[simp5782]

I didn't see where they mentioned a turbo.
Turbo models only have 1/2" spacers. They have different shape tunnel at the doghouse.

Last two sentences of post 1

Sent from my SM-G860P using Tapatalk