Right now i have a 1996 4L60e(at least i think it is the sticker reads ID # 6KCD) with its converter also a 2000 6.0L with the stock flex plate to a 4L80e.

Well I read on some old thread that there are issues with bolting up Pre 2001 6.0's to 4L60e tranny's.

Heres the thread:
http://ls1tech.com/forums/showthread.php?t=899844

I posted a thread there but i thought id do it here too.
My question is there some Flexplate/converter combo i can use to mate them up?

Here are some pics in case it helps:

1996? trans:

http://i37.tinypic.com/2rdgdbt.jpg

http://i34.tinypic.com/15q6dg8.jpg


Converter:

http://i38.tinypic.com/1zeeheh.jpg

http://i36.tinypic.com/2wmkfly.jpg

2000 6.0 Flex plate:

http://i37.tinypic.com/qppag0.jpg

http://i33.tinypic.com/2qnp4lc.jpg

Right now i have a 1996 4L60e(at least i think it is the sticker reads ID # 6KCD) with its converter also a 2000 6.0L with the stock flex plate to a 4L80e.

Well I read on some old thread that there are issues with bolting up Pre 2001 6.0's to 4L60e tranny's.





Since you already have a 99-2000 6.0L (they had iron heads) it will bolt right up to the earlier 4l60E. The later Gen IIIs V8's have a different crank offset vs the Gen I 350. So the 4.8/5.3 use a different flexplate/converter.

That 6.0L has a crank spacer and flat flywheel (to bolt them up to the 4l80) which it has the same spacing as the earlier trans. Make any sense?
You will have to fit the 6.0L flexplate the earlier converter by drilling holes to match the 60 holes.

I would have gotten a 4l80 the 6.0L will eat 4l60 up pretty quick!

the pics of the 6.0 shown is a lq4 motor. if you had a lq9, there wouldn't be any issue, since they are bolted to 65/70es stock. lq4s were backed by the 80e, and like said above, use a crank spacer and flat flexplate, vs a dished flexplate for the 60e. swap over a 60e flex plate and itll bolt to the 60e verter and is spaced right to fit the trans.

80e would be a better option...i went 5.3/80e in my blazer and couldn't be happier. the 60 i had wasn't cutting it.

the pics of the 6.0 shown is a lq4 motor. if you had a lq9, there wouldn't be any issue, since they are bolted to 65/70es stock. lq4s were backed by the 80e, and like said above, use a crank spacer and flat flexplate, vs a dished flexplate for the 60e. swap over a 60e flex plate and itll bolt to the 60e verter and is spaced right to fit the trans.

80e would be a better option...i went 5.3/80e in my blazer and couldn't be happier. the 60 i had wasn't cutting it.He has the old style Gen I 4l60E which will bolt right up to the LQ4 since it has the correct crank spacing already on them. As I stated above.

The 4l65/70 use the GEN III crank spacing converters they are different from the eariler pre-99 ones! If you swapped to the 4.8/5.3 or LQ9 plate there would be about a 1'' gap between the flexplate and flywheel. This has come up here many many times!

Since you already have a 99-2000 6.0L (they had iron heads) it will bolt right up to the earlier 4l60E.

Do you mean the current tranny i have or would i have to get an earlier one. Im pretty sure the tranny is a 1996 unit at least that is what this website say's: http://alldrivelineparts.com/transmissions/atgtkser.html look for ID # 6KCD

Also i already had the output shaft replaced and rebuilt while they were at it. :shaking:

That 6.0L has a crank spacer and flat flywheel (to bolt them up to the 4l80) which it has the same spacing as the earlier trans. Make any sense?
You will have to fit the 6.0L flexplate the earlier converter by drilling holes to match the 60 holes.

So i would reuse the current flex plate and modify it to bolt up to the 4L60 converter.

I would have gotten a 4l80 the 6.0L will eat 4l60 up pretty quick

Im putting it into a YJ and i was told it would be too long. Least that what Novak, advanced adapters, and high-impact said.

looking at the bell housing I would say that you have the later style 5.3 type bell housing. I have never seen an earlier bell housing with the top "7th" hole cast and drilled.

If your 4L60E is a stock '96, it will bolt up to the engine as is. You will need to slot the holes in the flexplate for the torque converter a bit.

If you had it rebuilt with a Gen III input shaft, and the Gen III bellhousing, and a Gen III torque converter, then you need a dished flexplate from a 5.3, and you need to remove the spacer.

What exactly do you have?

Not a 96 60e.

Bell housing being removable is a Gen III motor tranny thing.

My stock 97 60e was the old style 1 piece casting.

Not a 96 60e.

Bell housing being removable is a Gen III motor tranny thing.

My stock 97 60e was the old style 1 piece casting.

GM used both the one case and split case designs from around late 96 and up, escpecially in the S10's and Astro vans.

Your trans is definitely a 300mm converter style.

looking at the bell housing I would say that you have the later style 5.3 type bell housing. I have never seen an earlier bell housing with the top "7th" hole cast and drilled.Some were and weren't drilled it.

And some of the 97's still had the one piece.

So i would reuse the current flex plate and modify it to bolt up to the 4L60 converter.Yes



Im putting it into a YJ and i was told it would be too long. Least that what Novak, advanced adapters, and high-impact said.It's not that much longer. If your tires aren't to big and you not gasin' it to much you should be OK. Hell you can always get it rebuilt better than it was or go for a FLT level 5 4l65.

If your 4L60E is a stock '96, it will bolt up to the engine as is. You will need to slot the holes in the flexplate for the torque converter a bit.

If you had it rebuilt with a Gen III input shaft, and the Gen III bellhousing, and a Gen III torque converter, then you need a dished flexplate from a 5.3, and you need to remove the spacer.

What exactly do you have?

Well its basically a 4L60e, Not exactly sure what year but that website said that the code ID # 6KCD (my tranny has it as seen in pic)means its a 1996. Does that sound right? Is there a way to find out for sure? Some casting number or other sticker.

I had a new output shaft installed from Novak. Its part of the Kit to adapt it to the NP231.(I know, I know:ghost:) At the same time I had the the tech rebuild the tranny.

Yes



It's not that much longer. If your tires aren't to big and you not gasin' it to much you should be OK. Hell you can always get it rebuilt better than it was or go for a FLT level 5 4l65.

Well your info. gives me hope.

I thought I was stuck with an absolutely incompatible engine tranny combo. So the main reason my combo works,compared to the this guys is that my tranny is a 96'(if that is what it is) were his I believe was a newer 2001 tranny: http://ls1tech.com/forums/showthread.php?t=899844

If there is some way to positively identify my tranny's year let ,me know.

Thanks for your help guys

Well your info. gives me hope.

I thought I was stuck with an absolutely incompatible engine tranny combo. So the main reason my combo works,compared to the this guys is that my tranny is a 96'(if that is what it is) were his I believe was a newer 2001 tranny: http://ls1tech.com/forums/showthread.php?t=899844

If there is some way to positively identify my tranny's year let ,me know.

Thanks for your help guys
Like I said it won't really matter! The trans your have will work regardless you just need the right flexplate.

Install the TQ converter and measure the stick out of the mount pads (bolt holes) reletive to the flat bellhousing surface. The earlier 4l60E had less stick out vs the later Gen III ones.


Or hell I would bolt the thing together before I put it in the Jeep and see if the if its the correct setup flexplate!!!! Since you seem so worried about it will take 10 mins to see!:D

Like I said it won't really matter! The trans your have will work regardless you just need the right flexplate.

Install the TQ converter and measure the stick out of the mount pads (bolt holes) reletive to the flat bellhousing surface. The earlier 4l60E had less stick out vs the later Gen III ones.


Or hell I would bolt the thing together before I put it in the Jeep and see if the if its the correct setup flexplate!!!! Since you seem so worried about it will take 10 mins to see!:D

Guess I will need to ge the flex plate sloted or drilled first,like you said. will try to do it tommorow.

Thanks

OK, I read your post wrong, ie output shaft as input shaft. My bad. Your tranny will bolt right up, you will just need to slot a couple holes in the flexplate.

Pete

OK, I read your post wrong, ie output shaft as input shaft. My bad. Your tranny will bolt right up, you will just need to slot a couple holes in the flexplate.

Pete

Thanks for the input guys.

I tried to bolt up the stuff together, But there seems to be fitment issues.

So I went ahead and took Pics of the Issue.

Looks like the 4L60e converter will not bolt up to the 6.0 flexplate. the converter bulge does not allow it to get the hole mounts flush with flexplate as seen on the Third Picture.

Looks like if the converter face towards engine were flusher it might work. But IDK :confused:

Anybody have any suggestions.


4L60e with stock converter.

http://i36.tinypic.com/s6hqp1.jpg

6.0L with Stock Flex Plate

http://i33.tinypic.com/2a2b82.jpg

4L60e Converter & 6.OL Flex Plate

http://i38.tinypic.com/iyg21d.jpg

Yep thats the 4.8/5.3L Converter you can tell by the bluge in the front. You need a 4.8l/5.3 flex plate. But some of the early 6.0L's don't have a removable crank spacer, its cast in. Remove the flexplate and check. Post a picture.

Which I think your 6.0l being so early won't work with that converter. So all you need to do sell that one and get a Gen I V8 converter. And it will work, you will need to slot the flexplate still.

Can't just change out the converter to the earlier style. You must also change out the Stator support(or complete pump), input drum, and bell housing to work with the earlier converter.

Can't just change out the converter to the earlier style. You must also change out the Stator support(or complete pump), input drum, and bell housing to work with the earlier converter.Sorry thats what I meant! LOL... :flipoff2:The bellhousings are the same. He just needs the front pump and Verter.

That looks like his only option since he already has money tired up in this trans.

Sorry thats what I meant! LOL... :flipoff2:The bellhousings are the same. He just needs the front pump and Verter.

That looks like his only option since he already has money tired up in this trans.

I was reading this thread:
http://ls1tech.com/forums/showthread.php?t=862534&highlight=converter

Just for arguments sake. I think a converter like that one made for the 4L60e, consisting of a smaller converter with a ring welded on would problaby bolt right up tho the current flexplate on the 6.0.


:shaking: obviously disregarding the threads sound advice

I was reading this thread:
http://ls1tech.com/forums/showthread.php?t=862534&highlight=converter

Just for arguments sake. I think a converter like that one made for the 4L60e, consisting of a smaller converter with a ring welded on would problaby bolt right up tho the current flexplate on the 6.0.


:shaking: obviously disregarding the threads sound adviceSearch on LS1tech or ask.

I think one of the sponsors on there sells a converter that will work with the old style converter to later trans. I can't remember who thought!