I have a chance to buy a rebuilt 1993 7.3 still in the crate for $3000 cdn about $ 2600 U.S. There is no IP but injectors are there. includes heads and oil pan. My question is.Will my 6.9 manifolds int & Exh fit? Can I use my flywheel or will the balance be different?
I think my starter,WP VP etc will all fit. Would there be any other problems?
There is no warranty on this engine. He bought it from a friend 2 years ago to replace a DI in a 95. This is an IDI.Thanks Wilf.
Yes, the parts will swap. They are essentially the same block, with the exception of the head bolts, and other minor things that don't sound like they would matter in your application.
The flywheel balance might be an issue though. While both 6.9 and 7.3 engines have exactly the same part # crank, the flywheels and balancers that are used are different for each engine. 7.3 flywheels and matching harmonic balancer are to only be used on a 7.3, and accordingly 6.9 flywheels and balancers are only to be used on the 6.9. So, supposedly, you cannot use a 6.9 flywheel with a 7.3 balancer, or a 7.3 flywheel on a 6.9 with the 6.9 balancer etc. Now, having said that, there are guys who have swapped them around, and some say with no problems, but others(and Ford) say it is not to be done.
I recently put a 6.9from a standard truck, where a 7.3 auto used to live, but I had to use a new flexplate from a 7.3 (the old one was toast) and I had it balance matched to the 6.9 engine and it's balancer.
It's up to you, but the short answer is yes, the parts will physically swap.
Zigg
