97 454 to a 6.5 from a 94

[itsadieselthing]

I have just recently (today) aquired a 1997 suburban with a 454 and a little engine knock. I have a 1994 suburban with a 6.5l and a broken nose. I want to swap the motors and I'm looking for anyone who may have done the same. My biggest problem is the wiring. That spaghetti mess makes me shake. To top that all off they are two different computer setups. Anyone got any advice....other than run while i still can?

[More Power]

You'll need a new program EEPROM for the computer that will shift the transmission according to the diesel shift schedules. Your 454 has a TPS (Throttle Position Switch) that can be retrofitted onto the 6.5, but I'd rather use the genuine 1992-93 6.5 diesel TPS. Just splice in the wires.

Most of the mass of wires won't be used if you install a mechanically injected 6.5, which would make the conversion a whole lot easier.

Jim

[Yukon6.2]

Hi
How bad is the 94 damaged?
You might be better off fixing the 94 with the parts from the 97.Then you wouln't have to mess with wiring,or reregestering the 97 as a diesel.Sell the leftover parts to fund a paintjob and away you go.
Thomas

[Burning Oil]

Where are you from? If you put the diesel in the gas Sub you MIGHT have problems at inspection time. You may be better off swaping all the stuff you want to the 94 and keeping the diesel VIN#

[trbankii]

you MIGHT have problems at inspection time.

Yes, some areas have issues with older engines going into newer vehicles.

[Burning Oil]

Also, in this county diesel's are exempt from a smog check, but when they see your "gas" vin# and you want it inspected like a diesel truck you might have problems. I'm not sure about that so don't base your build on it. It's just that an inspector can only go by what his computer tells him and he may not know how to adapt or want to because they do pay heavy fines if they get caught doing something wrong.
Moral of the story, ask first.
See you guys in about 3 weeks.