4L60E

chevytrucks1234 · Dec 30, 2009

ive got a 1994 c 1500 with a 6.5 diesel non turbo and the transmission blew up. it has a 4L60E and not a 4L80E. are all 4l60E's of that time period the same or did the gas trucks have modified 4l60e's in them. i got a buddy that has a 4l60e out of a 93 astro. will it hold up?

chevytrucks1234 · Dec 30, 2009

correction 94 astro.

axlehandle · Dec 30, 2009

diesel are differnt

John - OH · Dec 30, 2009

I believe the diesels are different. Shift points aren"t the same if memory serves me correctly.

chevytrucks1234 · Dec 30, 2009

would anyone happen to know what the casting #s are for the transmissions that are built specifically for the diesels?

Bob · Dec 31, 2009

John, John, John!

You wrote "Shift points aren"t the same if memory serves me correctly."

If it is, in fact, a 4L60E, the "E" means "electronic".

The powertrain management 'puter decides when the tranny will shift, NOT the tranny, as it was in "the old days"!

schmuck · Dec 31, 2009

It will cost you about $20, but Alldata or a similar site might be your best bet for specifics in a case like this. I have used them before, and while it takes a while to navigate through, I have always ultimately found what I was looking for.

JDemaris · Dec 31, 2009

93 Astrovan will likely have a smaller servo(rated for the 4.3 and 5 liter engines). So, not
quite as rugged but won't affect how the trans fits.
The smaller 6.2 diesels were rated the same horsepower torque as the 5 liter gas engines,
so many parts remained the same. The bigger bore 6.5 is higher torque and I'm pretty sure
uses a bigger servo trans and a different stall-speed torque converter.

The thicker "K" cases used in full size vans and pickups use a cast-aluminum flywheel dust
cover that attaches with 6 bolts instead of 4. But, that was with the original 700R4(4L60)
series. Not sure if that was carried on with the 4L60E series, on not.

The torque converters are marked with ID codes and easy to identify. A few HD diesel
units have 6 lugs instead of 3.

buickanddeere · Dec 31, 2009

The transmission jobber shops all stock oversize 1st and 4th servo's for the TH700/4L60/4L60E.

John - OH · Dec 31, 2009

See the memory is going. LOL! Should have read closer, but it was late. Thanks for the correction Bob.

4L60E

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