mr93ws6

im just posting this for a buddy, hes not too engine savvy and is just getting into the ls world. He has a 2002 v6 camaro that the engine is going out. he wants to swap in a 5.3 out of a 2004 silverado. ive been looking around trying to figure out what is or isnt different.

some people said that (aside from the torque converter) just the imput shaft and bellhousing were different, some people said they are the same, some said that the shaft bellhousing servo valve body... blah blah blah blah

i just want to clear it up and hopefully get a straight answer from someone experienced so the work can begin or if he has to find a different trans entirely
Thanks in advance guys!

mrvedit

The 2002 V6 has a trans with a 298mm input shaft. That will not bolt up directly to LS engine. I don't have personal experience, but generally a crank spacer kit (about $55 with longer bolts) will allow the shorter 298mm converter to properly seat in the spacer. The holes in the flexplate need to be elongated too. (Do this with the flexplate and converter on the bench.)
The bell housing will bolt right up; the missing top bolt is not an issue.

Someone else should probably confirm or correct me here; I assume the converter to flexplate clearance will be Ok.

mr93ws6

hopefully someone else will haha hes really itching to throw some performance parts at it and not having to buy a whole trans would definately free up some funds

Cajun ELESS-ONE

idk about the spacer but putting a v8 behind a v6 trans he will be rebuilding it soon. Id just save up and get a 4l60e from a v8.

mrvedit

There is no difference in the strength of a V6 versus V8 trans because all the internal parts are exactly the same. I don't know if there is any strength difference between a 298mm input shaft and 300mm input shaft, but likely not and the Corvette from those years used the 298mm.
The V6 trans will not have the Vette servo and will have softer settings (smaller holes) in the separator plate, but this is easily rectified, especially if the Transgo HD2 shift kit is installed.

I don't generally recommend using pre '98 298mm 4L60E behind an LS engine and would always recommend a 300mm unit, but since the car already has a trans and the owner knows its history, it only cost $60 to try it.

mr93ws6

so if he were to put it behind the 5.3? the only things hed have to change are the torque converter and the bellhousing? still confused...

mrvedit

Nope. The torque converter will be a 298mm and can continue to be used. The bell housing is fine too. The problem is that the pilot on the converter will not reach the pilot hole in the LS crank. Therefore, you bolt a thick spacer ring to the end of the flexlate; the spacer ring has the pilot hole to secure the converter. The last minor problem is the flexplate holes need to be elongated about 1/8" for the converter to bolt up.
Here is the spacer:
http://www.summitracing.com/parts/na...3532/overview/
IIRC there is also a kit with the spacer and the longer flexplate bolts.

mr93ws6

fantastic! thank you guys this info was very helpfull!

F68

Hi first post here on ls1tech,
ok what about, -- The 4l60e tranz came out of.... I believe a 2000'ish express van-with a last of old style sbc vortec 5.7,
and going into a 2000 Silverado with a 4.3, the stock 4l60e has a slightly different bell, ( there is a extra Rectangular bump in the casting just under the starter bump at the front bellhouse flange)
,, but I learned looooong ago a 4.3 is just 3/4 of a 350 ... so,


will it really make any difference since its all an old timy v6 / v8 setup


whuts up with that-- ls1 tech .comm ????

clinebarger

A 2000 4.3L has an Aluminum oil pan, & has 2 bolts that go through the bellhousing into the oil pan, A 5.7L Vortec has a stamped steel oil pan & when used with a "Modular" case 4L60E....Has a stamped steel dust cover that bolts to the face of the bellhousing.

So you need to swap bellhousing between the 2,(You will need a TP-50 "Torx-Plus" socket) And run the correct "Code" torque converter for your V6, There is a 4-digit code on a sticker on the converter itself. The best case scenario is the V8 converter is lower stall, The worst case scenario is the V8 converter has the wrong TCC Friction for the application & the converter clutch will burn up....The TCC compatibility should not be an issue on a 2000ish 4L60E, But I have seen 700R4-Early 4L60E converters in later vehicles, Some trans shops don't think this applies to them.

Now if the trans has a PWM delete valve installed, You can run any TCC friction without harm.

F68

thanks for your reply, the damn 4l60's are so confusing!!!
so anyone know where I can pick up the super torx 50??
napa? or a cheaper alternative?
also im not really sure the one from the salvage yard van is actually a 4l60, it Could be a 4l65-e,, any way to tell--like other than M30 on the case side?
thanks again,

mrvedit

Google "Torx Plus 50". It is $10 on Amazon with (free) Prime shipping:

There is no way to visually tell a 4L60E from a 4L65E.
Assuming you are bolting up to an LS engine, just make sure you get one with a 300mm input shaft which is indicated by the 12 O'Clock bolt hole in the bell housing.

tfi racing

iTrader: (2)

Doesn't the Camaro 2.8/3.1/3.4 V6 have that other GM bellhousing to engine bolt pattern,not the standard SBC/BBC/LSX style?

clinebarger

I believe F68 is trying to swap a 4.3L 298mm 4l60E for a 5.7L 298mm 4L60E, At least that is how I read his question....There are no 298mm 4L65E's.

Yes, 2.8L/3.4L/3.8L F-bodies use a 245mm 700R4/4L60E with a 60 Degree Bellhousing.

F68

nope, plan changed real quick when I pulled the pan on the replacement, and felt the death grit in the bottom.


I got a 98 Penske gmc with a 4l80e ---and some express vans ran a 4.3 with a 80 so it looks like with the right 2800 stall torque converter , and the wiring switcheroo threads I can go with the HD tranz and be done with those junky 60's for ever.
the 80 is 2 " longer.... luck ` I got a 1.75" shorter carbon fiber drive shaft from an earlier truck,, and a welder to mod the crossmember!


2000 4.3 silveraddo with a 98 4l80e from a vortec 5.7 gmc HD boxvan....