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Old 06-17-2011, 09:43 AM
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4l60e replacement for 99 Suburban.

I have had a heck of a time trying to properly identify which 4l60e will work in my 1999 4x4 suburban with a 350ci. Ive pulled 2 460le's now out of other vehicals only to find different convertor and bell housing combinations which will not work.

Can anybody tell me either......

1. what vehicals would have a suitable 4l60e (other than a 99 suburban)


2. how to determine this by looking at casting or factory tag numbers

Any help would be very much appreciated.


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Old 06-18-2011, 07:29 AM
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since your vehicle has a 350 cid engine, you will need a 4L60e from a 350 cid engine NOT a LS series engine ( 4.8 , 5.3 ) .

the LS series engine trans 4L60e has a different depth design bell housing, different converter, different pump design. Will not swap into your suburban.

The LS series trans has a bolt hole at the very peak of the bell housing. Bell housing bolts onto main case.

The trans you need will NOT have the bolt hole at the peak and the bell housing bolts on to the main case.

You need to look at 1997 - 1998 - 1999 vehicles with 350 cid engine.

1999 was cross over year for GM trucks... some had regular 350 cid engine, some had the LS series engines. Export vehicle from the USA had more 350 cid engines than the USA spec trucks... this is what I have seen
Dont worry how old you are... it is the mileage on your body that adds up.
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