Re: 4l80e question
Other than the obvious answer, what's the difference between the 4l60-e and the 4l80-e. I already know the 80e is the big daddy of gm tranny's, but it doesn't really fit the tight spaces of a ty/sy. Is it possible to run a 4l60-e behind a ty/sy or, what I am thinking, run the 4l60-e behind a ls-1 swap.
Who told you that? The only thing you do to the truck is either notch the rear crossmember or make it removable and bolt back in like Frank from Autoaddictions did. MANY of us have them in our trucks now. Syclone and Typhoon.
In a nutshell, 60 series was meant to be a lightweight, smog friendly trans. Aluminum and stamped steel load baring parts with an output shaft drilled full of holes to allow lube of the geartrain. 80 series has all steel and cast iron load baring parts. The overrun clutch of the 80e is as big as the 3-4 clutches of the 60e. Weight was not an issue. 80e took a Sy with no other mods .2 faster in the quarter. We were told we were lying because that "just couldn't happen." BS. It happened. No bands apply in the 80e under normal circumstances. You get a band for manual braking when you pull the lever back and the reverse band for, well, reverse. So no bands to scorch or break. 60e has a band that must apply for 2nd and must apply for 4th.
Do some searching on here. The evidence is everwhere that it fits fine and it works.
The ONLY gripe I've had guys go on about is that rear crossmember. Of course, removing the rear crossmember is no big deal for some guys, a really big deal for others. Depends on your ability.
Mike Lee is working on a nice replacement for the rear crossmember since the coil over guys don't need it anymore but guys still want the rigidity of the frame.
There is a LOT of bunk on the internet about the "weight" issue. Many of us here have found it is just NOT true.
Gearing is completely different on the 80e. Turbos love load. I think a lot of the time issue was from the 80e having a longer 1st gear. So the truck is now taking off AND using first rather than just get out of the hole then immediately shift. When I worked with Tasos Alexiou a few years ago, we had his Sy set up with a 700 that did 8.90's. Cost over $6.5K for JUST parts for the trans. No converter. Tasos found that 1st gear becomes useless at that level in a 700. Nothing but wheel spin, the 1-2 shift because the gear ratio is spread out so far scared the hell out of him. That's a LARGE reason for the nasty 1-2 bang shift. Rather than fight with the 80e/TH400, better to just embrace it and use it if you are gonna play a lot. LSX conversion are using it as well. Fits with the right pan and engine mounts.
Cruising vehicle, no. Don't need it. Like your project. If it's just a nice little cruiser. You don't need an 80e. For guys boost launching every stoplight, 700/60series just isn't gonna cut it. For example. If a guy has broken 5 or 6 700r4s, you think he really wants another? Then you get the guy on the other hand that has never broken one. He doesn't need it because how he uses his vehicle doesn't warrant it.