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Rough example of cost to swap a 4L80E into an F-body that had a 4L60E in it give or take +/- 500 depending on torque converter selection.
Sure you can get a junkyard 4L80E, throw a transgo in it and hope for the best with a used compatible stock flexplate, TH400 stock yoke, cheap hayden cooler and some cheap off the shelf converter in it, but not something I'd personally do.
I've been on this fence for a long time now about this. There are a lot of blown 70e transmissions in the TBSS pages. Swap to a 80e is pretty much the go to response now a days whenever someone has an issue. I am pushing close to 700hp, so nothing crazy and would really like to keep the 70e but I see way too many stories of even built transmissions blowing up and then swapping to 80s.
The big thing you get into about built units blowing is well they are so very many 60e 70e units exceeding 80e many times over. But reality is a GOOD JUNK YARD 80e is no picnic to find and building one of those you will have some dollars in too plus the swap
__________________ Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
The 4l60 has its place. It has a bad wrap mostly from tuners unknowingly disabling torque management completely and/or inept builders. I wouldn't specifically recommend one for a 1000hp build, especially a truck, but it can be made to hold a good amount of power.
Most people don't realize when going to an 80e, they now have to spin about 80lbs (i'm just guesstimating) more rotating mass from a trans thats a good bit heavier.
-I've never weighed either. I know a 4l80 is ALOT heavier when picking either up. I tried to look it up but I find conflicting info (internet as usual) one yahoo said the 80e was only 20-30lbs heavier which i know better than that!
I asked another "prolific" poster on this site if the Holley Terminator system could do do torque management like OEM control does. He flat out said to get a "stronger trans that doesnt need that".
I have wondered if any of the aftermarket systems w/trans control hasten the demise of a 4l60E.
I asked another "prolific" poster on this site if the Holley Terminator system could do do torque management like OEM control does. He flat out said to get a "stronger trans that doesnt need that".
I have wondered if any of the aftermarket systems w/trans control hasten the demise of a 4l60E.
what about all the late model cars that have 6,8,10 speeds in them. If you disable torque management, they die an early death too. I guess those aren’t stronger transmissions?
and when I say tq management, I’m referring to pulling timing on the shifts only. If I’m not mistaken, the fastest and most powerful factory cars have torque management. A 4l80 isn’t immune to failures either. Especially if it shifts hard. Shifting hard tears **** up. I prefer a fast positive shift over a firm or hard shift.
what about all the late model cars that have 6,8,10 speeds in them. If you disable torque management, they die an early death too. I guess those aren’t stronger transmissions?
and when I say tq management, I’m referring to pulling timing on the shifts only. If I’m not mistaken, the fastest and most powerful factory cars have torque management. A 4l80 isn’t immune to failures either. Especially if it shifts hard. Shifting hard tears **** up. I prefer a fast positive shift over a firm or hard shift.
I probably terrible I tell people keep it or not with my trans. I disabled in it the Impala along with traction control . But I agree shifting to harsh is a trans killer , You want firm/quick but not slams and along with progressive .No reason to slam cruising around town
And as a tuner said the PCM can work against you depending on the set up. in mine it actually factory pulled back line on the 2-3 at all but WOT I guess to avoid clucky feel. I saw that in the tune and went HMM and fixed it now the 2-3 at low and par throttle is much much firmer.
__________________ Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
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