Hey all,

I need some confirmation from the experts that I know post here that the 2000+ V6 4L60E's are the same internally as those on the LS1 cars. Also, that to make this trans bolt up to an LS1, you just need to swap the bellhousing (it is removeable) and possibly change the input shaft.

PLEASE POST ONLY IF YOU KNOW THIS FOR A FACT! :) Thanks!

Scott

 

The input shafts are differnt and the Bellhousing is differnt. It isnt to hard to remove.

 

yes it is removable, but it wont last long if you leave the V6 tranny in there. you would have to put in another TC and i wouldnt expect for the tranny to last but just a couple of months with an LS1 engine. there are more clutches in an LS1 tranny from what i was told.

i too got all excited when i found out that they had removable bellhouses. but you need to invest in a tranny as well.

 

Sorry, you're absolutely wrong. Ask Ahart. They are the EXACT SAME INTERNALLY AS THE LS1 4L60E's.

Like I said, please only post if you know FOR SURE and can back it up.

Obviously you need a new converter, V6 converters don't fit, and wouldn't stall at the right RPMs. There are NOT more clutches, they are the exact same internally.

scott

 

scott,
then why ask. i trust ahart if he says so. i got my information from mark at hpsalvage and i am not sure if he is a GM master mechanic, but i dont think so. and we all know that you already know about the converters being different, but its all good.

 

Why ask? Because a friend of mine needs confirmation of this before we swap our trannies, so I can do my own LS1 swap.

Why in the WORLD would GM put different internals in a lighter-motored transmission? It would cost more to have different parts. GM is cheap, and they will cut costs in any way they can.

Yeah, I know more about converters than you, even if it is through bad experience. Not all of us trust someone to rebuild a POS stock one and up the stall for worthless results.

Thanks to those who contributed.

scott

 

GM would put different internals in because when your selling 100,000 of something it it worth the engineering to save materials and labor but only if it was worth setting up manufacturing to do so, but you think 100,000 would be worth it. But it could go either way, if the pre 2000 v6 trans were different you're talking about like 500,000 units, big numbers, say if they save $20 per trans that's like 10 million ,big numbers.

Does anybody really know the truth? We need someone who rebuilds for a living.

 

I know the truth. I posted this to PROVIDE CONFIRMATION FOR A FRIEND OF MINE. Another friend, who is an ASE certified master mechanic, and member of this board, who rebuilds these trannies for a living, told me this was the case. This thread was to provide support so that he will be confident in swapping transmissions with me. What dont you guys not understand about that?

WhoBetter, you make a good point, but it just doesn't make sense for GM to do that. Why bother re-engineering trannies for each motor when you can just put the same in all of them? This is why you have the same parts for the 93-97 trannies (Transgo being a HUGE example of this) and the same issue goes for the 98-02s (Transgo again). Transgo parts are internal parts, and are universal between V6 and V8 4L60E's.

Taken from Thunder's site:
Part # for LS1 Transgo: 26-4L60E
Part # for LT1 Transgo: 26-4L60E
Part # for V6 Transgo: 26-4L60E

I would mention that the servos are different, but he is going to have the thing built anyway, with Corvette servo's that would be included in a standard rebuild.

Hoping V6Power (Dom) will chime in here, he knows them left to right.

scott

 

yes, we all know that you know more about modding f-boies than i do, but i just got off the phone with one of my loser friends who also happens to work at a chevy dealership and he could not confirm that they are the same or different. but if ahart told you they where the same, then i would have believed him from the start.

btw, good luck with your swap.

 

the internals of the trans are identical in the 700r4-4l60e all the same except somce added or diff servos. you can use the internals from a truck in an f bod vette dont matter. the input shaft should be the same as well remember when we had the LS1 converter in your it worked except it didnt go into the crank. i would count the teeth on the input shaft when you pull it and length. see if they have diff part numbers too

 

so ryan,
all this time i could have used my V6 tranny instead of buying an LS1 tranny for my swap? that sucks! it sure would have saved me a penny. when my mechanic told me that the bell housing was removable, he told me he thought i could use the same tranny. but when i called hpsalvage he told me i would need a new converter but the tranny he didnt expect to last more than a few months. oh well, lucky scott.