DrWagon

I am bolting a 2007+ 4l60e to a 2007 LY6. The LY6 came with the 80e transmission so I need to make sure the 60e bellhousing I pick up will connect. I've been told that there are different 60e bellhousings that will match up to the various LS engines. Can anyone confirm this? It seems to me they would all match up, but I am not confident enough to waste $50 to find out.

TIA

pdsq98gt

As long as the 4l60e came out of a v8 then the bellhousing should be correct. You would need a 4l60e flexplate because the one for the 80e has a spacer.

toyin

Do you know what the 60 BH came off of?

I know there are some rare narrow 700R4/4l60E BH's but there not very common and that I know they weren't on anything that new. 4l60 and 80's have the same pattern. Just make sure to measure your BH and compare the measurements.

gofastwclass

iTrader: (2)

pdsq98gt is correct. Get a 4L60E flexplate with a transmission using the 90 degree pattern and remove the 4L80E flexplate and spacer and life will be good. It doesn't matter, either V8 or 90 degree V6 (4.3) 4L60E's will work. The pattern is the same for the Chevy V8 bell housing.

The "rare, narrow" bell housings you refer to aren't rare at all. They are merely from 60 degree V6 vehicles or 3.8 liter V6 vehicles. All V6 F-Body cars were 60 degree V6 engines (3.4 or 3.8). Some (later I believe) V6 S-10's, all full size trucks and vans had either 4.3 V6's or V8's which were built on a 90 degree bell housing. The I4 / I5 vehicles also used the 60 degree pattern so stay away from them as well.

If you look closely at the images I stole (um, I mean included), you can see the Gen III / IV (LSx) pattern is identical to the SBC pattern but we lost one a bolt the bank 2 (passenger) side of the block. You can also see how distinct the 60 degree pattern is compared to the 90 degree pattern.

GM V6 60 degree pattern (bad):


GM V8 90 degree pattern (good):


Gen III / IV (LSx) 90 degree pattern:

DrWagon

So the transmission didn't come with a bellhousing or tail extension which is why I wanted confirmation before I went ahead and bought a used one from Ebay that might not match. All I know is the performabuilt tranny came from a 2007+ model. Being the more unique 2007+ they could only supply the trans without the BH or tail extension.


Thanks, this helps. I hadn't prepared to get the flexplate so I'll jump on that pretty quick. Anything special to consider if I'm replacing? Any year specifics? Any reason to upgrade while at it (probably not, never know?)

Cheers

gofastwclass

iTrader: (2)

I personally fall into the "a flexplate is a flexplate" crowd. Even though I drive my cars hard, I'm not a drag racer.

With that in mind, at stock or reasonably hopped up power levels, the stock / stock replacement parts work fine. My favourite part is they are also affordable. The SFI stuff is nice for racing but an unnecessary expense on a street car.

The only thing you need to worry about is a Gen III engine 4L60E flexplate. If you need a vehicle reference, go for a 2002 Silverado 1500 with a 5.3. The flexplate will have a dish to it which faces the transmission and will require shorter bolts than you currently have. You will also need to remove the .400" spacer on the crank to install the 4L60E flexplate.

DrWagon

Bell housing ordered! Any reason to stay away from the aftermarket scene for the flex plates? Lots of new aftermarket flexplates that are the same price as used pullouts (that I would tend to trust less for wear and tear issues).

There is a split between 157 and 168 tooth; most listed are 168 so I'd assume that's correct.

gofastwclass

iTrader: (2)

I usually get flexplates with the engine but I personally see no problems with aftermarket versions. The key is to ensure it is for a Gen III or Gen IV (LSx) engine and NOT a "small block Chevy." Unfortunately, some people use the term "small block" to mean any Chevy non-big block (396, 427, 454, 502, etc.) engine.

As I mentioned above about the year and vehicle, that is a good generic vehicle the parts store (and other) people can reference.