5.3 to F Body 4L60E and TC woes
02-04-2016, 09:56 PM
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5.3 to F Body 4L60E and TC woes Hey gents... So, there I was, at the junk yard looking for stuff when I happened upon a 99 Silverado with no engine. It was great since the TC was still in there! So I took it. I took it thinking "I have an Fbody 4L60E, supposedly from an LS1 car,so it should work for me" I am thinking I Was wrong. The TC looks like this:
Which means absolutely nothing to me (hoping you can all tell me what is by the light of the moon or however these things are identified). The tranny input shaft looks like this:
They do not seem to mesh. OH well, it was 20 bux for the TC. Now, herein lies the question. What is the proper TC to mate up with an Fbody 4L60E to a 2001 5.3 with a dished flywheel? I have been searching all day, and have found pretty much nothing... I may just suck at searching, who knows. Thanks for any info you guys can drop on me.
Which means absolutely nothing to me (hoping you can all tell me what is by the light of the moon or however these things are identified). The tranny input shaft looks like this:
They do not seem to mesh. OH well, it was 20 bux for the TC. Now, herein lies the question. What is the proper TC to mate up with an Fbody 4L60E to a 2001 5.3 with a dished flywheel? I have been searching all day, and have found pretty much nothing... I may just suck at searching, who knows. Thanks for any info you guys can drop on me.
02-05-2016, 10:05 AM
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Looks like you have a 300 mm input shaft 4L60E, so that's the LS engine 4L60E. It should bolt up to any LS engine without needing a spacer. You should be able to use any LS V8 engine torque converter. (Don't get a torque converter from a LTx or older F-body.) I think I've seen some people use the Trailblazer torque converter since it's cheap and has a higher stall speed (but don't quote me on that).
You mentioned "flywheel" which is used for manual transmissions? I think you mean the flexplate which is used for auto?
On the torque converter, those four characters are used to identify the converter (ie: application and stall speed).
Another problem you might face down the road is I don't think all LS engine 4L60E are the same internally. (I'm not experienced with newer 4L60E.) So you might want to specify any code/markings on the transmission and the details about the PCM you're going to use to control it (ie: what year engine?).
Best of luck.
You mentioned "flywheel" which is used for manual transmissions? I think you mean the flexplate which is used for auto?
On the torque converter, those four characters are used to identify the converter (ie: application and stall speed).
Another problem you might face down the road is I don't think all LS engine 4L60E are the same internally. (I'm not experienced with newer 4L60E.) So you might want to specify any code/markings on the transmission and the details about the PCM you're going to use to control it (ie: what year engine?).
Best of luck.
02-05-2016, 10:30 AM
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Sorry, meant flex plate. The PCM is from an 04 GTO LS1 l/T56, but I have contacted a tuner and he states he can reflash it to an A4 setup. The tranny is marked with "0FFD" on the label, does have the removable bell housing with 12 o'clock bolt hole as well. The part number on the label is 610FFDY25778151. Thanks for all the info. Engine btw is an 01 5.3 out of a Tahoe. Truck accessories with LS1 intake, fbody oil pan, etc. Thanks!
02-05-2016, 12:46 PM
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I think this got more complicated than necessary. You need a factory converter with the sticker code that begins with "T". Example "TMBX". Like stated you can also find a VJCX out of a trailblazer and try that. You cannot however use an LTx converter on your transmission regardless of how many spacers you have. We have some entry level offerings that would increase performance and be totally new. If you would like, I can help you find something that works for your goals.
-Brian
-Brian
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02-05-2016, 05:25 PM
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Ha, I like to make things as difficult as possible at all times 
Thank you for the information regarding what will and wont work for me. I will give you a shout when more funds appear in my bank account 
Thank you for the information regarding what will and wont work for me. I will give you a shout when more funds appear in my bank account
02-05-2016, 07:31 PM
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Oh wow, yes, I was mistaken - Circle-D Brian is right, an LTx or earlier SBC torque converter cannot fit the LS 4L60E you have because the LTx torque converter is 298 mm and the input shaft of your 4L60E is 300 mm. (And the meshing teeth are in different locations.)
The spacer I was thinking of is if you're trying to put an older LTx 4L60E as a whole (with torque converter) and bolt up to an LS engine. Will need a spacer in between the torque converter and the LS flex plate.
There's not a spacer available between the torque converter and the transmission input shaft!
The spacer I was thinking of is if you're trying to put an older LTx 4L60E as a whole (with torque converter) and bolt up to an LS engine. Will need a spacer in between the torque converter and the LS flex plate.
There's not a spacer available between the torque converter and the transmission input shaft!
