4L80e conversion

[RedHeartbeat]

Well, ordered the flywheel parts for the 80e conversion today. I guess that makes me commited.

12551367 flywheel
12563533 (6) bolts
12563532 spacer
Precision 447 U-joint (1.188 & 1.125 diam caps. See later posts for more details.)
Precision 492-10 U-joint straps and bolts

The flywheel is flat and has 6 holes to match up to the stock convertor
The bolts are longer for the spacer
The spacer goes between the flywheel and the crankshaft

All the GM parts were bought through CrateEngineDepot, best price I could find on short notice.

[farmtruc]

I'll be able to make that harness for you.

All my parts just came in, well they are scheduled to show up today.

[GMCwantsLS1]

Driveshaft?
Cooling lines?
Re-pin connector?
Tuning?
All I can think of.

[RedHeartbeat]

Awesome, Allen! What do I need to do to the tune to make it work? Driveshaft will be shortened and the slip yoke removed. My trans uses the bolton u-joint and I have two piece driveshaft so that won't be too pricey of a mod. The crossmember will be interesting.

[ducky]

where did you get the 80e from? mileage etc?

[farmtruc]

I'll have to send you a file to overlay on the current file, then the pcm can control the trans.
Say goodbye to rebuilding transmissions, good choice,
allen

[RedHeartbeat]

where did you get the 80e from? mileage etc?

Not sure of the mileage. Came out of a 97 farm truck that was beat to hell. Cost me my life savings, $200. plus driving 200 miles round trip to pick it up. Picked it up off of Craig's list.

[GMCwantsLS1]

Not sure of the mileage. Came out of a 97 farm truck that was beat to hell. Cost me my life savings, $200. plus driving 200 miles round trip to pick it up. Picked it up off of Craig's list.

It wouldn't suprise me if you got 2-3 years use out of it without any upgrades.

[RedHeartbeat]

Well, pulled the old 60e out in under 2 hours in the driveway. I'm too familiar with that.

Installed the new flywheel, spacer and longer bolts. Went very easy, no problems.

Me and the fiance went to the storage unit to retrieve the 80e, damn that thing is heavy! Good thing she's strong since she volunteered to help me load it in the back of the 07. The 2" lowered rear suspension sure came in handy.

Got it home and unloaded it using the engine hoist, much easier. Tried to install the thing and it's too wide with my headers. I had to break out the sawzall and cut the ears off the transmission, the sections that stick out about an inch wider than the engine block. All is good now, got five bolts holding it on the block.

Problem #1, transmission mount. The 60e mount I have is modified to fit the dual pipes, cats and old transmission and won't even get close to working with the 80e plus I want to keep it as-is in case I change my mind and want to go back to the 60e in the future. I'm going to check salvage yards and see if I can find and OBS 80e crossmember to modify. If I dont find one I guess I'll fire up the torch and build one. (built a custom crossmember out of 6" x .5" x 4ft of steel and a 15" long piece of 3" x 3" angle iron)

Problem #2, hydraulic line fittings. The 80e I bought did not come with the factory cooler line fittings. I suppose they're available from GM but some Russell fittings may be nicer and then I can run some -4 line from the trans up to the coolers. Anyone got a line on these? ( fixed now using stock fittings, see post )

Problem #3, driveshaft. Gotta measure and get the shaft shortened. Hate to do that but these shafts are a dime a dozen in salvage yards. ( fixed, no cutting require. See update post. )

Problem #4, wiring. Got Allen working on that one.

Problem #5, convertor. Heavy stock convertor for now. I'd like to get a Vig in the near future. May have to call and see if they'll do a trade-in.

Problem #6, trans pan is dented bigtime(thanks to the guy I bought it from). I'm going to try just hammering it down flat for now and see how that works. Maybe I'll replace it in the near future with something shiney. ( pan is now flat, filter and fluid have been changed. )

Problem #7, linkage. Going to see if I can get the 4L60e column shift stuff to work on this in the morning. (stock 4L60e linkage bolted right to it)

[ducky]

Sounds like other than those 7 problems, things are looking good. What did that 80e come out of since it was a 97? Oh and why do you want to go back to a 60e?