4L75 transmission?

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squaredeal91

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Traded a subaru and getting an 83 C10 with a knocking good guys 350 and a replacement engine to go with it so that's cool. He said it has a 4L75 transmission? I know nothing about them. Like barely even heard of one and I felt stupid lol so here I am asking about them. Did a quick Google search and seems there good. Did they come stock in anything?
He said engine and trans came out of a built Vega or something. Pics will come. I was there and didn't get any pics tho. Thanks in advance
 

NickTransmissions

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Traded a subaru and getting an 83 C10 with a knocking good guys 350 and a replacement engine to go with it so that's cool. He said it has a 4L75 transmission? I know nothing about them. Like barely even heard of one and I felt stupid lol so here I am asking about them. Did a quick Google search and seems there good. Did they come stock in anything?
He said engine and trans came out of a built Vega or something. Pics will come. I was there and didn't get any pics tho. Thanks in advance
The 4L75E is a crate HP 4L60E variant sold over the counter by GM as an alternative to the 4L80E where power levels exceed 600 but where a 4L80E will not fit without modifying the transmission tunnel, which usually not desiresble to do.

To my knowledge, they were never a RPO.
 

squaredeal91

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Greg bush
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1991 SB
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K30
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5.9 Cummins 12 valve
The 4L75E is a crate HP 4L60E variant sold over the counter by GM as an alternative to the 4L80E where power levels exceed 600 but where a 4L80E will not fit without modifying the transmission tunnel, which usually not desiresble to do.

To my knowledge, they were never a RPO.
Thank you!
 

NickTransmissions

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I wondered that too. Sometimes he mixes things up and maybe that's what it is. Man I wish I wasn't in too much of a hurry to get a picture or 2.
The 4L75E has a billet 4th gear servo but looks like any other later 4L60E, apart from that. The TH375B is a beefier version of the TH350 but looks just like it while the 375 is the red-headed step child of the Turbo400 family and has a 27-spline output shaft but looks like a TH400 beyond that.
 

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