4L60E is out and 4L80E about to go in.

[Fast355]

At 265lbs (4L80e) I bet it was. I used a 2x12 run from one side to the other and just lifted each side and put blocks under it until it was in place. Best way I could figure to do it in gravel.

I have a concrete driveway and a trans jack, but the trans on the jack wouldnt clear the crossmember. So I had to use 2x4 as skids and levers to get it up on the jack. Had my little brother give me a hand.

Having the driveshaft shortened 1.5" today and rebalanced. I had to buy an expensive slip yoke specific to a bolt on yoke style 4L80E. Will have to use a conversion u-joint as well and plan to get solid USA made spicer joints on each end.. Picked up a pair of 4" x 1/4" x 12" pieces of flat stock to modify my crossmember.

Almost done with the harness modificatioms as well but ran out of time.

4L80E shift cable should be here today and that only leaves the rear cooler line and pcm tune.

[Fast355]

Its back! Cut down to 70.5", new custom yoke, Spicer solid U-joints and a balance. Ready to go in tonight.

Shift cable came in too.

Might work on the wiring tonight too just depends on how much of a pain the shift cable becomes.

[Fast355]

Its back! Cut down to 70.5", new custom yoke, Spicer solid U-joints and a balance. Ready to go in tonight.

Shift cable came in too.

Might work on the wiring tonight too just depends on how much of a pain the shift cable becomes.

Driveshaft ended up being the wrong length..

But the shift cable is installed and working on the wiring. Only getting an hour or so a night in on it. Got the park/neutral switch connected with help of a heat gun and adjusted and it cranks over.

In the process of adding the iss and 4l80e pigtail I have from a 98 C2500

[Playtoy_18]

Where are you located fast?
I have a spare 0411 laying around,I can flash it and send it your way.
Just pull the file with HPT and send it back my way.

[Fast355]

Where are you located fast?
I have a spare 0411 laying around,I can flash it and send it your way.
Just pull the file with HPT and send it back my way.

I am in the Fort Worth area.

I had HP Tuners perform a segment swap for me. PCM should be taken care of, but I appreciate the generous offer of assistance. If it doesn't work out I might still take you up on that offer in the near future.

Managed to get the crossmember hacked up and modified to my liking and plan to work on it some more tonight. I will trim down some of the extra material with my cut-off wheel, smooth it, degrease it and paint it with some self-priming flat black paint to keep it from rusting at the welds.

[EagleMark]

Where are you located fast?
I have a spare 0411 laying around,I can flash it and send it your way.
Just pull the file with HPT and send it back my way.

I didn't think he would need that much help. I would have done the same for him.

Don't ever let that hold you back Fast!

[Fast355]

I didn't think he would need that much help. I would have done the same for him.

Don't ever let that hold you back Fast!

It has been a battle, the whole way through, but I know the end result will be worth the fight. I was unable to find anybody that had swapped a 4L80E into an Express chassis of any year. Now that I know what has to be done, I could do it again with my eyes closed.

I am actually considering dropping some Edelbrock ETec 200 heads on the engine and making some more HP out of it. I would go with the smaller 170s, but they are really not much of an improvement over the factory iron heads.

I have been searching high and low for a pair of used ASM oversized long tube runners that flow 260 cfm, right where the ETec's flow in the .550" lift range I am running. Hoping to match the whole combination up to make ~425 HP and 500 ft/lbs from the 5.7. If I ever get around to doing this, I plan to send the whole thing to Llyod Elliot as he is highly experienced in porting LT1 heads and the ETec heads are practically copies of the LT4 heads. The Vortec TPI base only flows in the high 220 range, but I have a feeling that can be fixed.

The resident Grand National and Supra experts at work are pushing me to slap a mid-mount T76 on it, a front mounted intercooler and put about 10 psi to it on E85.

[Fast355]

A little more grinding, a thorough cleaning and some flat black rustoleum. Almost looks like it could have came that way.