Alwhite00

iTrader: (1)

I have a "long crank" 1999 6.0 engine and I had a 2001 4L60E trans that I wanted to use in my 67 Chevelle. I could not find any really good info other than ordering a custom torque converter. I started measuring and the 6.0 crank & 5.3 crank had the same ID for the TC - I then measured the ring gear to the rear block face and they were identical from the 5.3 to 6.0. The 5.3 has a dished flywheel and the 6.0 a flat fyywheel.

I held up the 5.3 TC to the 6.0 crank and flywheel and it would not mate up as the snout on the TC bottomed out. I guestimated the distance that it was from bolting to the flywheel was about .200"

I made 3 .250" spacers that I welded to the flywheel after elongating the holes slightly to match the 5.3 TC - then I drew up some spacers and CNC'd them to fit between the engine & trans to make up the .250" difference. This thing bolts together like stock. I am happy as I do not have to hunt down a unobtanium trans or TC - I am sure there are other ways but this worked great for me and didn't cost me much as I did it on my break at work.

Just thought i'd share and maybe someone can take something from this. Don't mind the grease, Will get torn down & detailed before install.

Spacers welded to 6.0 flywheel.


Flywheel & trans spacers. I made it two piece as I didn't need a huge chunk of steel the.


Engine, Trans & spacers.

Circle-D_Brian

Very crafty...I would however reccomend getting longer dowel pins to properly center the trans. Motor plate guys do it, so they should be easy to find.

-Brian

aknovaman

iTrader: (7)

Can you post the auto cad file for the bellhousing spacer?

1FastBrick

iTrader: (16)

Bellhousing is the same from SBC and BBC. Here is a link with dimensions http://www.theturboforums.com/thread...olt-Dimensions

Jimbo1367

I wonder if you will get a out of balance vibration.

Alwhite00

iTrader: (1)

I am getting the flexplate balanced. I probably shouldn't have welded them then i wouldn't need balancing.

Hawk465

iTrader: (10)

What year 6.0's had the long crank?

Andy1

Did you check the flex plate for any warpage after welding? Balancing won't help if it looks like a potato chip.....that's a little extreme, but you know what I mean.

Andy1

LS1MCSS

iTrader: (18)

I think it was 99 and 2000.

Alwhite00

iTrader: (1)

I'm sure it is fine an would say. it is balanced pretty good as well.

sicvic01

I just finished it this past weekend. and I only used 1/3 of an inch spacers on the flywheel no welding no balancing this was a 2000 lq4 (long crank) to a 2004 60e... Edge Racing 4000 converter... It left no play at all between the converter and flywheel

sicvic01

Thanks alwhite00 for all your help

sicvic01

By the way I used the 6.0/80e flywheel and just drilled a 60e converter pattern on the flywheel

velox65

iTrader: (9)

I used a 97 vortec flexplate, knocked off the weights and used some washers to get the proper spacing, took no time.

lq4headache

Hey I just came across the post and I know it was a few years ago but Alwhite00 how did the spacer work out are u still running that set up ??

t_raven

iTrader: (12)

I think it was only 99 and 00.

As far as I know all of them had iron heads as well, that makes them easy to identify in a wrecking yard.




Good post OP. I wondered if the same could be done with my 6.0 and t56, though I guess the starter might not extend far enough. I ended up getting another long crank 6.0 that needed a crank anyway and put a used short crank in it.

gofastwclass

iTrader: (2)

Nice work but the difference between cranks is .400". Since it's been over a year, I'm curious how this worked out for the OP.

As a side note: the 4.3 V6 4L60E transmission has the same input spacing as the long crank 6.0.

Yes t_raven, the 1999 and early 2000 iron head engines are the long crank engines. The newer aluminum head (2000+) 6.0 engines have a removable spacer and longer bolts installed between the crank and flexplate.

G-Body

iTrader: (4)

The older 1 piece bellhousing LT1, vortec, SBC 4l60e/700r4`s should also have the same input shaft spacing as the long crank 6.0l motors.

Mark Arzola III

As a side note: the 4.3 V6 4L60E transmission has the same input spacing as the long crank 6.0.,

What year of transmission would I need to get I originally just used my 60e in my 01 Silverado
But I put the 99 lq4 in my truck an the transmission shot 30 mins after driving, the torque converter is stuck to the tranny an pump is bad, it was a new gm 4l60e I put in my truck 5xxx ago, any help would be appreciated it's my daily

Seeker1056

does the strter still engage properly?