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I'm wanting to swap my 4l60E for a 4l80E because I'm swapping in a lQ4 to my 98 2Dr Tahoe. Now I've heard alot of different answers and I don't want to need to mess around with driveshaft lengths...
Now is it possible to move the 80E to the stock 60E position? Are there any motor mounts that will allow me to accomplish this? Also, My Tahoe has Autotrac Is it possible to mate my existing T-Case to the 80E? Probably need to swap input shafts correct?
There's a different gear or something. Try a search because someone asked last week and there was a link posted by someone showing how to do the swap.
ECSB 4WD 4l60E to 4l80E - PerformanceTrucks.net Forums
See link above.
At one point I also thought about moving the entire engine forward. Came back to reality and just bought drive shafts. Yes the autotrac transfer case will swap out with modifications. Change the input shaft in it. Detailed in the thread posted.
How much farther back does the 80E sit? I'd honestly prefer moving the engine to new shafts.
See page 3 of the link above.Quote:
Originally Posted by CamaroZ
Technically they sit in the same place. The difference is that the 80 and the bigger T/C is longer.....
True, I don't know why I was wording it like that. :doofus:Quote:
Originally Posted by GasGuzzler
So, I found his post on cross member modification HERE. Says he moved it back about 2.5" to keep the engine in factory position. I have no problem having the engine moved 3" forward to accommodate the 4l80E. I plan to run electric fans so I should have plenty of room :thumb: Does anyone know If any motor mounts will help me accomplish this? I'm not much of a fabricator to say the least :lol:
I think I would leave the engine in the proper place and move the crossmember.
Sorry to be so blunt... Why? It just seems alot easier to me to give up a couple inches than having to modify existing shafts.Quote:
Originally Posted by GasGuzzler
How much would a new driveshaft usually run? I've read a couple times a 2500 front driveshaft should work so I should be ok there. The rear factory driveshaft probably would not be able to be shortened I assume.
It just seems having the weight back as far as possible would be best for driveability and it would make headers, etc. fit a lot better.
I honestly am just trying to avoid spending the cash on driveshafts. If you can save alot of cash by moving something 2" forward why not? Maybe I'm missing something but how would driveability be affected by this? I'm not worried about LT header fitment.. Stock manifolds will be fine for me or even some mid length's. Please don't think I'm trying to argue I'm really just trying to understand.Quote:
Originally Posted by GasGuzzler
I have a 6.5TD 94 Blazer that I pulled the 6.5TD/4l80E out of for a Cummins swap but that may be canceled. Would it be possible to use those driveshafts? I can't imagine theres much differences between the 2 vehicles driveline length wise.
Hmmm....
Driveshafts or,
Extend exhaust, make new motor mounts, hope all wires and cooling hoses will make the stretch or comress, fuel lines, oil pan won't hit the crossmember. Hope all steering components will clear the low hung engine accessories.
Just thinking out loud.
Yeah ^^^ that all the etc. I was thinking of. It will turn and handle like more of a pig with the engine moved forward. Braking will feel different too.
If you have $$$ concerns on having shafts built then an 80 swap may not be the right thing for you. Do you need an 80?
I've completely destroyed a 4l60E with my LS1 Camaro with just LT's and no Cat's. These Transmissions do not belong in a full size truck. I'm going to measure the 94's drive shaft and see what I can make work. The 6.0 Will be Cammed also down the road.
The solution seems to be above. :) some times it pays to go ahead and spend a few bucks. trust me I know from experiance. Some things I have tried to go cheap on ended up costing me about 3 times the original cost.Quote:
Originally Posted by CamaroZ
Very True! I also know from experience. :laugh: I was only trying to understand why no one was simply just moving the motor 2" forward. I'm hoping now the driveshafts out of my 94 Blazer will work on the 98.Quote:
Originally Posted by zeake