5LM60 Knocking Sound

[JPVortex]

So after seeing this maybe I just ride it till it dies lol, these transmissions aren’t expensive. I don’t have any experience rebuilding transmissions or anything.

 

[NickTransmissions]

So after seeing this maybe I just ride it till it dies lol, these transmissions aren’t expensive. I don’t have any experience rebuilding transmissions or anything.

That's prob your best bet. I rarely do manual trabsmissions because it's usually more cost effective for the customer to find a good used unit. They are usually not the gamble that autos like the 4L60E...

 

[JPVortex]

That's prob your best bet. I rarely do manual trabsmissions because it's usually more cost effective for the customer to find a good used unit. They are usually not the gamble that autos like the 4L60E...

Agreed on the gambling for a 4l60e lol. When I first got the truck the 4L60E in it had no 2nd and slipped 3rd bad, so I put a $300 140k mile unit in it.

It rode okay for a couple months but then 2nd was slow to shift and it slipped 3rd. Fluid was almost black and the pan was filled full of clutch pack sludge lol.

That’s when I decided to manual swap to a 5LM60, and the trans was only like $200.

I don’t want to swap to an NV4500, sure it be more reliable with my 4 inch lift and 315s but the gearing in the 5LM60 is literally perfect for my truck.

Only thing I’ll do is swap to an NV3500, only has one shift rail as opposed to the 4 in a 5LM60, supposedly makes the 3500 more reliable.

 

[Scooterwrench]

The 262 powered S-10 tranny's are close ratio with a taller first and second and the C/K tranny's are wide ratio. The tranny I have came out of an '98 S-10 with the internal slave.

 

[DerekTheGreat]

I'm a bit late to this party and I didn't watch your video to see how loud the knocking is, but my 5LM60 in my '89 does that too. Only does it when the oil is good & hot and it's a soft knock. I also assumed it is the front bearing. It also makes an awful rattling sound if I get on it below 1,000 rpm. (Temperature doesn't matter for that and only if say I let the clutch out such that it's doing ~3mph in 1st and then I stomp on it, or in any other gear and the rpm dips below 1,000 and then I tip my foot into the throttle) However, it doesn't leak and so I decided to run it and be mindful of it's "needs." 50,000 miles later and it's still choochin' just fine. I've towed with it several times, take off fast as needed to merge with traffic from a stop and have plenty of fun in the snow with clutch dumps.

Had a '92 that was worse than my '89. Same story there, although I think that one was leaking at the front bearing. Don't know what became of that one, it went away with my ex. The '92 had just over 200k miles on it, my '89 has about 280k miles. Wouldn't surprise me if the trans in the '89 was rebuilt (there's orange RTV where the transfer case bolts to the trans) and if the '92 was all-original.