4T-65E

[Jeff M]

Starting in 96, a few GM FWD vehicles got the 4T60E-HD (3800 SC motor, C/H,
H and G bodies) with the Transaxle model code of 6YLW, 6YRW and 6CTW
accordingly, all the rest 4T60E were standard as you state.  The 4T65E
however, started as the standard version (RPO M15) but the HD version
started up later (RPO MN7) to better handle the 280 lb ft of those (stock)
SC 3800s.  I have a friend who is pushing around 340 lb ft (and maybe a
little more but 300 hp at the wheels) and will be running a high 12 very
soon(did a 13.01 first time out) .  The 4T65E/HD case will handle 400 lb ft
but that is only the case, so far the internals needed help to run over 300
lb ft for a time.  Also, there is a 4T65E (RPO MN3) that has "Advanced
Controls" for the Intrique (whatever).  I don't consider you to be wrong,
just not informed yet, as we all are in some areas until we get into a great
group of helpful guys like here at GMECM!

Good luck with your project.

Jeff Middaugh
tystorm at email.msn.com

>I thought the 65E was HD by default. I didn't know there was a light duty
>version. I know the 60E has a light and heavy duty version. The 4T60/440 is
>mechanically different from the 4T60E too, although from the manuals, it
>looks like the 4T60E is closer to the 440 than the 4T65E.  Seems to me
there
>is only one RPO for the 65E. Could be wrong.
>
>Good info either way Jeff, thanks!
>
>Terry
>----- Original Message -----
>From: Jeff M <tystorm at email.msn.com>
>To: <gmecm at efi332.eng.ohio-state.edu>
>Sent: Monday, July 26, 1999 10:29 PM
>Subject: Re: 4T-65E
>
>
>> It was said:
>>
>> >Kevin, go to the same sights I posted earlier today regarding the
>> >4T440/4T60/4T60E, there a plenty of links to the info you need on the
>> >4T65E/HD, and so much more!  If you are planning on running bigger
power,
>> >make sure to get either a 4T65E-HD or change out the gears and carrier
in
>a
>> >4T65E to get the hardened ones from the HD.
>> >
>> >Jeff Middaugh
>> >tystorm at email.msn.com
>>
>>
>> >Jeff, I don't see any sites posted earlier today, can you email them to
>the
>> >list?
>>
>> Here they are again (hope they got through the first time, someone else
>> missed this info I sent for them):
>>
>> http://transonline.net
>> http://www.thegrid.net/thedrivetrainpage
>> http://www.atraonline.com   (and check out their "Gears" back issues)
>> http://www.bantapubnet.com
>> http://www.transgo.com  http://www.altousa.com
>> http://www.members.aol.com/atsgmo2/atsg.htm
>> http://www.transtec.com
>>
>> >Also, the tranny I have found is out of a 1998 Grand Prix GTP ..
>obviously
>> a
>> >65E-HD no?
>>
>> Since you did not say before, I was not for sure.  If the RPO number for
>the
>> tranny is MN7, it's the one and only.
>>
>> >Thanks a lot in advance
>> >
>> >Kevin Margitta
>>
>>
>> Also know that the gears may list for this tranny as either 2.86, 3.05 or
>> 3.29 but the drive chains (2 of them) and attaching gears (sprockets) can
>> change the final gearing to the wheels.
>>
>> Good luck (just say no to traction control).
>>
>> Jeff Middaugh
>> tystorm at email.msn.com
>>
>>
>>
>>
>