Help! Just bought a '00 LQ4...
Jun 13, 2009 | 02:50 PM
#11
yep everyone and their brother knows this... re read my post and think about it in your head. If his motor came with a flexplate it probably doesn't have a spacer on it just the flat 80e flexplate.
If you measure from the bellhousing mating surface of the engine to the back side of the flexplate where the torque converter mounts it will be the same distance whether it is a 99-00 w/o a spacer or an 01+ w/the spacer installed as well as a 4.8/5.3/ls1 w/the dished 60e style flexplate (dished so it doesn't need a spacer) If the distance from the block to the flexplate is common for all of these setups and the only real difference being the torque converter bolt pattern then that is the only thing that needs to be changed to run a 60e transmission.... Just re drill the holes
If you measure from the bellhousing mating surface of the engine to the back side of the flexplate where the torque converter mounts it will be the same distance whether it is a 99-00 w/o a spacer or an 01+ w/the spacer installed as well as a 4.8/5.3/ls1 w/the dished 60e style flexplate (dished so it doesn't need a spacer) If the distance from the block to the flexplate is common for all of these setups and the only real difference being the torque converter bolt pattern then that is the only thing that needs to be changed to run a 60e transmission.... Just re drill the holes
Jun 13, 2009 | 08:08 PM
#12
Ya, that will make the bolts holes work on the flex plate, but the OTHER problem that makes it a no-go is the alignment hub on the front of the converter. The longer crank will push on the 60'e hub and force the converter in to the pump, breaking it. You CAN'T bolt a 99-00 6L crank to a 4l60e without a special converter that "fixes" the hub length. The 4l60e's hub is too long and the 99-00 crank isn't machined out for it to slide into it far enough. That is the problem. The only fix's are swap cranks, special, converter or swap to a 4l80e. If it is a 2wd, my suggestion is to just swap to an 80e
Jun 14, 2009 | 04:17 PM
#13
Ya, that will make the bolts holes work on the flex plate, but the OTHER problem that makes it a no-go is the alignment hub on the front of the converter. The longer crank will push on the 60'e hub and force the converter in to the pump, breaking it. You CAN'T bolt a 99-00 6L crank to a 4l60e without a special converter that "fixes" the hub length. The 4l60e's hub is too long and the 99-00 crank isn't machined out for it to slide into it far enough. That is the problem. The only fix's are swap cranks, special, converter or swap to a 4l80e. If it is a 2wd, my suggestion is to just swap to an 80e
Jun 14, 2009 | 11:36 PM
#14
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From: Sublette, KS
Ok guys, so I got my engine Saturday and yes it has the longer crank. So I remembered that I had a worn out TCI 3800 converter(the splines on the inner hub are thin as paper... or else it would be in my truck. lol) for a 4l60e. I grabbed it and tried to put it on my LQ4 with the stock 80e flexplate and NO, it wont work unless I cut about a 1/4 inch off the pilot hub on the converter or or machine the crank... I wonder If I can cut some off the pilot hub???
Jun 14, 2009 | 11:49 PM
#17
I've got a 6.0 crank I'd let go cheap, but you would definately need to get it checked out before putting it in as the motor was involved in a pretty bad accident. It looks fine though, and the bearings looked good too.
Jun 14, 2009 | 11:56 PM
#18
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From: Sublette, KS
I'll let you know... I'm gunna do some research first to see if I cant just cut the pilot on my stock converter and run that till the tranny blows and I'll prob just put in a 4l80e. Thanks for the offer...