whats the differenc between these trannys

[95 BLKDOUT Drop Top]

Ok i kno theres gotta be an obvious dif between the 4T60E, the 4T65E, and the 4T65E Heavy Duty, but what, I kno the 4T60E was used with the 60* engines and the 4t65e and 4t65e-hd were used with the 3800 motors but what exactly is the dif? My main question is can i use a 4T60E with a 3800II/ 3800II s/c?

[Brian P]

the 4T65e basically replaced the 60-e. It's not necessarily application specific. There are 60-e's mounted to 3800's in '96-97 Buick Regals, '97 GP GT, etc. So yes you can use it with a 3800. The 60-e and 65-e are similar in some ways and different in others, without getting into much detail. The main "external" difference besides axles being different, is the 65-e doesn't use a vacuum controlled fluid pressure modulator, but does it with a solenoid. So you'll need a PCM that can control that.

[95 BLKDOUT Drop Top]

so if i swap out my 3100 for a 3800 i dont have to get a new tranny (seein how i jus rebuilt the damn thing this past july)

[Brian P]

Yup. You will need to use a '95 3.8 computer however that may not work on a series 2. If a series 2 needs a '96-97 PCM to function then you'll have some work ahead of you as far as wiring. I'm not familiar with 3800 engine management but yes, you can keep your tranny.

[digitaloutsider]

There are 60-e's mounted to 3800's in '96-97 Buick Regals, '97 GP GT, etc.

Regal LS's only. The GS's got the 4T65e-HD just like the GTP's did. The only year a Series II L67 was mated to a 4T60e was in 1996.

[99RegalGS]

You can run a series 2 3800 on OBD1 easily. So that's not even a problem.

[19GT92]

the L67 did not come out till 97 u must be thinkin of the L36 motor

[digitaloutsider]

No..

 

The Series I L67 came out in 1992.

 

The Series II came out in 1996.

[Euro]

so the L67's got the 65 in 97, did ALL of them get the HD?

 

ive heard some got stuck with the plain 65

[digitaloutsider]

1996:

L36 & 4T60

L67 & 4T60e-HD

 

1997:

L36 & 4T60

L67 & 4T65e-HD

 

1998+:

L36 & 4T65e

L67 & 4T65e-HD

[Euro]

ok, thanks for that info shaun. i looked at a 97 GTP and couple friends hounded me and said it might be a no no cause it didnt have the HD trans. but now, i guess they all did!

 

 

[95 BLKDOUT Drop Top]

back to my original question, i want to put a 3800 series 2 in my 95 cutty. from what i gather the s/c 3800s got the 60e-hd or the 65e-hd so a s/c motor is ou tthe question unless i swap the tranny (not happenin because it just got rebuilt) so my only option is a 3800 from a 96 regal

[digitaloutsider]

You CAN mate an L67 to your transmission, but it'll require a 4T60 flexplate (the mounting holes are different). They made HD's for a reason though, and I'm positive if you started actually modding the engine, you'd tear the input shaft in two and take the differential down eventually.

 

And I wouldn't bother swapping a 3800 in unless it was an L67. IMHO, of course.