Its a lot more different than that, 27 vs 30 splime input and an aux. valve body. I searched alot to find a 4L60 and ended up buying two cores to get enough parts to build one trans. when 700r4 junk was in stock and free. Like I prevously stated they 4L60s are an upgraded 700r4.Its the 4l60 no "e". Better know as the 700r4. They are the same trans basically, GM changed the name. Now there is a difference. The 4L60 (non e) relied on the computer and several sensors (VSS) to make it lock up along with a 4th gear pressure switch. So it has a small plug on the side of it.
In 1993 GM switch to the 4l60e its a full electronic trans. with non TV cable and the PCM shifted it.
Look were the speedo cable goes on tail house of trans. If it has a mech speedo your good to go, if not it has a VSS and you need to convert to cable. Around that time GM had some that could be VSS or cable.Vss? Vehicle speed sensor? So it should work up against my SBC and if I am going carbs no computer I'm OK?
You must modify the center intake bolts with a rat tail file, no big deal.Sweet so I guess ill use this trans since it has low miles and no problems. Now it would be nice to find a carbd manifold to put on this motor and do away with the Tbi. Would I have to change the heads? Its out of the 91. It has a roller cam so would like to keep that
It would be nice to stick with this newer motor. Its in way better shape than the motor that came in my truck, but were building this 57 and want to go carbd. I have one so to make it work, it should bolt on with minor modification but not a new manifold? I know the fuel system will have to be worked and the distributer will need to be changed...You must modify the center intake bolts with a rat tail file, no big deal.
Les and BO185 -- thanks for posting some useful info.:tu
I never knew the 700R4 was also known as the 4L60.
Mini rant: With the 6-, 7-, and 8-speed transmissions that are all the rage now, I find myself wishing for a simple 4-speed OD trans for my daily driver. Certainly anything more than a 5-speed auto spends its time shifting way too much, and trying to outsmart the driver. My 2011 F150 has a 6-speed with a low gear that's almost useless when the truck is unloaded. And what's really bad, is when I slow down to around 5 mph or so, the trans stays in 3rd until I barely touch the gas pedal, then it drops down into 1st, and then shifts to 2nd almost immediately. Very annoying and totally unnecessary. /End rant.