4l80e swap out

kpw · Post by **kpw** » Thu Dec 15, 2022 7:05 pm

I have a 1995 that has a 4l80 e in it that is whining in all gears. gets louder as i go down the rd. a 4l80e is 700 used in my area and to rebuild it would be far to expensive for an old painters van. What other transmission will fit it? engine is a vortec 350 that surprisingly is in good shape.

Post by **MountainManJoe** » Thu Dec 15, 2022 7:51 pm

Astro/Safaris never had 4L80s. Did you put one in? They came with 4L60E's.
If it whines in neutral then it's probably not coming from the transmission.

Bret Schmerker · Post by **Bret Schmerker** » Mon Dec 26, 2022 9:05 pm

Are ye attempting a 4L80-E retrofit, which I've longlisted as a fallback in case the physical brake layout contraindicates a clutch retrofit? The M-body midvan came with the 4L60-E stock from 1996-2001, the 4L65-E from 2002 to end of production. (The Allison 1000 five-speed is too large for the M-body.) That whine may be coming from the rear axle, if its frequency is a function of road speed.

Post by **MountainManJoe** » Mon Dec 26, 2022 9:12 pm

Bret Schmerker wrote: ↑Mon Dec 26, 2022 9:05 pmThe M-body midvan came with ... the 4L65-E from 2002 to end of production.

Astro/Safaris only ever got 4L60Es. In later years some of internal parts may have been upgraded , but it was never a full blown 4L65 which was put behind the bigger V8's like the 6.0L
https://en.wikipedia.org/wiki/GM_4L60-E ... sion#4L65E

Bret Schmerker wrote: ↑Mon Dec 26, 2022 9:05 pmThat whine may be coming from the rear axle

Again, not if it happens in Neutral.

Chevy & GMC Vans

Chevy & GMC Vans

4l80e swap out

4l80e swap out

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