4l65 in 2004 Corvette
Thread Starter
Teching In
Joined: Aug 2015
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4l65 in 2004 Corvette Probably been brought up before but I saw nothing recent about it. I have a 2004 Corvette with an LS1. I blew a tranny back in 2013 and the guy told me he put a reconditioned one in after the fact. My receipt shows it was to be a 4l65e. Well after 5k miles the tranny blew again and I had the car towed to his shop.
Long story short, the guy gives me a song and dance, I take the car to another shop, they pull the tranny and it was a 4l60e, not the 4l65e the paper work claimed.
Had the tranny rebuilt the right way for 4K and am going after the original shop. My build sheet shows an 4l60e but Hot Rod magazine says differently http://www.hotrod.com/how-to/transmi...transmissions/
I was told by a local chevy dealer that the corvette used the insides of the 4l65e until 2004 but it was re-designated the 4l65e in the 2005 models. Any feedback would be appreciated.
Long story short, the guy gives me a song and dance, I take the car to another shop, they pull the tranny and it was a 4l60e, not the 4l65e the paper work claimed.
Had the tranny rebuilt the right way for 4K and am going after the original shop. My build sheet shows an 4l60e but Hot Rod magazine says differently http://www.hotrod.com/how-to/transmi...transmissions/
I was told by a local chevy dealer that the corvette used the insides of the 4l65e until 2004 but it was re-designated the 4l65e in the 2005 models. Any feedback would be appreciated.
TECH Fanatic
Joined: Jan 2015
Posts: 1,114
Likes: 33
From: Fort Worth, Texas
This topic comes up a lot on many forums, The most honest/blunt way to put this is......If your Car/Truck/SUV DID NOT come with a 6.0L (LQ4,LQ9,LS2) It DOES NOT have a 4L65E from the factory.
If your SPID (Service Parts Identification) Sticker states M30....You have a 4L60E. M32....4L65E.
If your SPID (Service Parts Identification) Sticker states M30....You have a 4L60E. M32....4L65E.
Thread Starter
Teching In
Joined: Aug 2015
Posts: 10
Likes: 0
This topic comes up a lot on many forums, The most honest/blunt way to put this is......If your Car/Truck/SUV DID NOT come with a 6.0L (LQ4,LQ9,LS2) It DOES NOT have a 4L65E from the factory.
If your SPID (Service Parts Identification) Sticker states M30....You have a 4L60E. M32....4L65E.
If your SPID (Service Parts Identification) Sticker states M30....You have a 4L60E. M32....4L65E.
Interesting. I found it strange that my chevy dealership said that that late model 2004 should have had the 4l65e as does hot rod magazine.
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
As far as I know (and certainly not a Vette expert) all C5 used the pre-LS style 298mm 4L60E because the input shaft is about 1/2"shorter than the newer 300mm input shaft.
As one of the 4L65E differences was a hardened 300mm input shaft, that could not apply to a C5.
The only other improvements in the 4L65E are 7 frictions for the 3/4 clutch and 5 pinion planetaries. Sorry, I doubt GM bothered to update the pre-LS 298mm 4L60E with those parts.
Other improvement introduced in 2003, such as a hardened sun shell were used in all 4L60E and 4L65E.
I'm pretty sure all the pro builders here will tell you the 5-pinion planetaries are not worth it, at least not below 600HP. The 7 friction 3/4 clutch is a nice improvement, but a 7 or 8 friction 3/4 clutch should be installed in every 4L60E or 4L65E rebuild.
As one of the 4L65E differences was a hardened 300mm input shaft, that could not apply to a C5.
The only other improvements in the 4L65E are 7 frictions for the 3/4 clutch and 5 pinion planetaries. Sorry, I doubt GM bothered to update the pre-LS 298mm 4L60E with those parts.
Other improvement introduced in 2003, such as a hardened sun shell were used in all 4L60E and 4L65E.
I'm pretty sure all the pro builders here will tell you the 5-pinion planetaries are not worth it, at least not below 600HP. The 7 friction 3/4 clutch is a nice improvement, but a 7 or 8 friction 3/4 clutch should be installed in every 4L60E or 4L65E rebuild.
TECH Fanatic
Joined: Jan 2015
Posts: 1,114
Likes: 33
From: Fort Worth, Texas
Show me an SPID with LS1 & M32...Then we can talk about this.
If it states M30...Your car had a 4L60E from the factory.
