4L80E- Best year?
#1
4L80E- Best year?
I did some searching but could not find anything conclusive.
I'm looking at doing the 80E swap in my truck and have a lead on a 80E out of a 1994 Silverado.
Is there any benefit to any years?
99'+ top bolt hole in bell housing
'91-'93 have an old style connector, '94+ have the updated connector?
Is there anything else major that I am missing?
I only plan on running 350-400 HP right now but plan on doubling that in 1-2 years.
I'm looking at doing the 80E swap in my truck and have a lead on a 80E out of a 1994 Silverado.
Is there any benefit to any years?
99'+ top bolt hole in bell housing
'91-'93 have an old style connector, '94+ have the updated connector?
Is there anything else major that I am missing?
I only plan on running 350-400 HP right now but plan on doubling that in 1-2 years.
Last edited by wretched73; 02-21-2017 at 09:37 AM. Reason: Year correction
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wretched73 (02-21-2017)
#5
TECH Enthusiast
Most of the ones in an Express van behind the 350, 8.1 and Duramax will be 4L85Es with 5 pinion planets. The one behind my 350 in my Express came out of a 2002 8.1 G3500 Express. A little more gear whine in the lower gears but the planets are much stronger. Some of the older big block motorhomes also had 4 pinon straight cut planets that are stronger as well.
#7
Late '00-'01 up is the latest. Element type sprags, improved lube circuit, etc. According to ATSG. My 10/2000 4L80E had all the upgrades. You can tell latest from the others by how close the cooler line connectors are to each other. I think the earlier (pre update) cooler fittings are close together more towards the center of the case, vs the later (updated) fittings were further apart one towards the bell housing and one towards tail.
Last edited by BigBamaBoy65; 03-08-2017 at 10:15 PM.
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#8
TECH Enthusiast
Late '00-'01 up is the latest. Element type sprags, improved lube circuit, etc. According to ATSG. My 10/2000 4L80E had all the upgrades. You can tell latest from the others by how close the cooler line connectors are to each other. I think the earlier (pre update) cooler fittings are close together more towards the center of the case, vs the later (updated) fittings were further apart one towards the bell housing and one towards tail.