4l70e to 4l60e

Reply Subscribe

Thread Tools

Search this Thread

Mar 8, 2018 | 11:05 PM

Jonathan Mayhew

Thread Starter

Registered User

Joined: Mar 2018

Posts: 5

Likes: 0

4l70e to 4l60e

Hey I have a 2008 gmc sierra vortecmax with a 4l70e. The 4l70e did not hold up. I have a built 4l60e from a 1998 gmc sierra I'd be looking to swap. What is needed to be done to actually make it work.

Mar 9, 2018 | 11:01 AM

06GR

Staging Lane

Joined: Feb 2018

Posts: 76

Likes: 1

A 4L70E is a built 4L60E. What happened to the 70E?

I believe the 08s had an ISS (speed sensor) in the trans, so a direct swap isn't an option. I think you can tune around it, but some other guys with more experience will have to comment on that.

Mar 9, 2018 | 01:21 PM

Jonathan Mayhew

Thread Starter

Registered User

Joined: Mar 2018

Posts: 5

Likes: 0

70e couldn't handle a built 6.0l

Mar 9, 2018 | 01:22 PM

Jonathan Mayhew

Thread Starter

Registered User

Joined: Mar 2018

Posts: 5

Likes: 0

Quote:

Originally Posted by Jays_SSZ28

I wouldn't do it. the '98, if you're sure of the year, will not even bolt up properly.

And the Input Speed Sensor, well you need it and it won't retrofit back to the 1998 transmission.

your saying even if I tuned it it will not work. I know it bolts up no problem

Mar 9, 2018 | 05:34 PM

Jonathan Mayhew

Thread Starter

Registered User

Joined: Mar 2018

Posts: 5

Likes: 0

Quote:

Originally Posted by Jays_SSZ28

If you think it'll work, then go for it.

Not sure how you plan to tune in an input speed sensor thats not there.

done. Truck works great shifts ******* hard just how I Remember that trans. Bolted up and all. Had to computer tune solo it could find 3 and 4th but just wetn 232 in her thanks all

Mar 9, 2018 | 05:34 PM

06GR

Staging Lane

Joined: Feb 2018

Posts: 76

Likes: 1

Quote:

Originally Posted by Jays_SSZ28

If you think it'll work, then go for it.

Not sure how you plan to tune in an input speed sensor thats not there.

Jay, I thought you could tune it out?

Mar 12, 2018 | 01:51 AM

Jonathan Mayhew

Thread Starter

Registered User

Joined: Mar 2018

Posts: 5

Likes: 0

Quote:

Originally Posted by Jays_SSZ28

Not sure this thread had a point.
Most people ask questions for projects they never do or have someone else do.
That sure was fast.
This is why I don't ask questions, if I think it's going to work I just do it.

needed to get a new trans in. A couple days later and it works ******* amazing. Having fuel issues now. But I smell fuel and truck has lately been getting sluggish and found fuel pump not doing it' prime soo.ill put one in.