4l80e
As far as the transmissions go, the earlier design has both cooler fittings up by the bell housing. The the later transmission moves one of those fittings (the return) back about 18". If you have a tight trans tunnel back there, this can be a problem because you need some space to have the tubing make a 90* turn. The 4L80E always came in trucks, and trucks always have plenty of room so it's easy to overlook.
Also if you do have the later model I believe 96 and up make sure you use the correct trans line at rear it has an extension tube if not you'll wipe out the trans.
If you need info let me know just finished mine, rebuilt Transgo HD2 Don't know your setup but 4L80 uses different flexplate(flat) with spacer and longer bolts if using the stock converter if aftermarket you have options
http://www.painlessperformance.com/Manuals/60218.pdf
Last edited by john59; Mar 16, 2012 at 09:31 PM.
Also if you do have the later model I believe 96 and up make sure you use the correct trans line at rear it has an extension tube if not you'll wipe out the trans.
If you need info let me know just finished mine, rebuilt Transgo HD2 Don't know your setup but 4L80 uses different flexplate(flat) with spacer and longer bolts if using the stock converter if aftermarket you have options
http://www.painlessperformance.com/Manuals/60218.pdf
Also if you do have the later model I believe 96 and up make sure you use the correct trans line at rear it has an extension tube if not you'll wipe out the trans.
If you need info let me know just finished mine, rebuilt Transgo HD2 Don't know your setup but 4L80 uses different flexplate(flat) with spacer and longer bolts if using the stock converter if aftermarket you have options
http://www.painlessperformance.com/Manuals/60218.pdf
http://jakesperformance.com/
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First as you indicated the cooler line on the older version are up front. This is actually a god thing at least in my case.... more room.
Second the internal luberation of the transmision was changed for the newer transmisions. I'm not sure what one is better but Jake had no worries and actually likes the older units better. With the mods he dos you will have no worries. I'm in canada and I ordered one from him... Its in the garage and ready for installation
when my car comes back for hte body shop!There may be other diffences. I expect if you called Jakes Performance they could answer all your questions and then some. I had a great experience dealing with them!
Bruce
The Best V8 Stories One Small Block at Time
The clutch can be retro'd but requires the newer race/housing, I forget the name.
Just keep an eye out in Craigs list etc and you'll find one.
The converter is the next biggest expense.
1. Pay off house.
2. Pay off all other debt.
3. 6.2/ 6 speed.
4. Inform all former girlfriends that I am now filthy rich.








