Converting from a 2000 6.0 to a 2003-4

[iron lungs]

Anyone out there done a replacement of a 6.0l iron head lq4 to a newer (less mileage of course) 6.0l? What is involved since the wreckers say the 2 are not interchangeable?

i'm guessing a complete external component and sensor swap (with intake) should take care of the wiring issues- then it is just a matter of the accessories?

Thanks in advance!

[skeet]

shouldnt have any problem, i dropped a 6.0 04 out of an escalade in my truck and no issues everything bolted fine, 99 silverado

[iron lungs]

Thanks a bunch- i can't see any problems either but i'd rather find out now what i'm in store for!

[xlcooplx]

the crankshaft has a longer snout for the 80e transmission. it wont bolt up with that longer crank, iirc. personally, i'd find another engine.

[RedHeartbeat]

Coop is correct. The early 6.0s had a longer crankshaft on the transmission end and will not interchange with the truck if you have a 60e transmission. If you have an 80e its not an issue if they supply the flexplate/flywheel with the engine. They came with 60e trannies on some of the 6.0s but they were the old style transmission, not the newer 300mm units.

[iron lungs]

Thanks for the info guys- I have the 4L80E thank goodness. The reason i'm trying to go this route rather than rebuilding is to have a much lower mileage truck and still have the iron 6.0l. Needless to say I have some other plans for that motor when it comes out.