4L80E weighs 65# more than a 4L60E

**CPT** · 06-10-2014, 01:04 PM

I just happen to have a 4L80E that we just built so I took the opportunity to weigh it compared to a 4L60E. Both are 4WD units. The '80E is a fresh build, so it's dry, with no accessories. Total 4L80E weight is 190.6#. The 4L60E has fluid in it and has the transfer plate bolted to it with an MLP switch and linkage. Total 4L60E weight is 125#.

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**CPT** · 06-10-2014, 01:20 PM

We're trying to work out some further back to back testing. The only problem is, we can't find anyone who wants to take one of our 4L60Es out to put one of these boat anchors in it...LOL. As I've said, we did tests years ago and seen an 80E slow a car down ATLEAST 2/10 in 3 different cars. Dyno tests showed 50 less RWHP. Anyone out there silly enough to put a 4L80E in their F-Body and let us do some testing and then we'll put one of our 4L60Es in it and watch it run 2/10s faster?

Frank

**dawdaw** · 06-10-2014, 02:34 PM

Doesn't a 375 output shaft on a 400 have the same diameter and spline count as a 60e.... just curious is all. My car used to have a 60e. And when I bought it the owner had put a 400 in it with a 9" tail... then when I rebuilt the trans last winter I noticed the output shaft wasn't a 400 output... The retard that had built the trans before me had theforwarddrum installed onto the last clutch in thedirect drumcausing a loaded (no endshaft play) assy that took out the directed spag and race and center support . 2nd gear was like trying throwing a ship behind your car lol. Merely curious cause he said he was able to re use the drive shaft (not cut it) and it fit perfect. They must be the same length and output shafts the same? Sorry for the rant I don't know anyone else I could ask.

**CPT** · 06-10-2014, 03:10 PM

Yes, the 375 uses the same spline as a 200/350/700/4L60E.

Frank

**xDetroitMetalx** · 06-10-2014, 08:49 PM

I'll be more then happy to run your 4L80E boat anchor! lol

Nice to see some legit write ups on your side of the 4L80E vs 4L60E debate.

**firebird_1995** · 06-10-2014, 09:20 PM

I'll be running an 80e in my Monte at the shootout

***popo8*** · 06-10-2014, 11:48 PM

Frank... when u are able to put all the comparisons together...id love to help put it together here and sticked.

LTXtech.com is my Drug...

**shownomercy** · 07-11-2014, 09:04 AM

Feeling a good internet argument today, so leggoo

60e to 80e dyno

50whp loss right CPT?

**CPT** · 07-11-2014, 09:32 AM

`Anyone can use crayons to make a dyno graph. It doesn't make it the truth. As I've already stated numerous times. I've witnessed dyno pulls and quarter mile times with the same vehicles. Were you there when these dyno pulls were done? Probably not. You can choose to drink the "Jakes Kool Aid" if you want. Most of the other stuff on his FAQs page is BS as well. But, if you can ONLY build a 4L80E to hold up, I guess you'll do anything you can to try to disillusion people.

Frank

**shownomercy** · 07-11-2014, 09:52 AM

Discredit it all you want, so far you have only provided a solid weight comparison, otherwise, its all hearsay.

Awaiting some solid back to back numbers to credit your claims. Until then, you are being quite the hypocrite with the "kool aid" comment towards 80e builders but are essentially doing the same with the 60e pushing.

Facts here would be nice.