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ncgamedog · 07-26-2011, 01:30 PM

http://67-72chevytrucks.com/vboard/f...play.php?f=206

You could still run a GM 205. Just because the trans originally had drivers drop T-case, doesnt mean you cant run a passenger drop case. Its not like the trans spins a different way or anything.

The 4l60e is basically a newer version of the th305/700r4. While there are marked differences, the output shaft on the 4l60e is still 27 spline like its earlier predecessors. This means that you can mate a th350 version 205 behind it, as those had 27 spline inputs. It will require that you use the earlier (1992-97) 4 bolt flange version of the 4l60e, combined with a 2" aluminum spacer and normal th350 T-case adapter. The 4l60e has a longer output shaft than the th350/700r4. There is a short shaft available to convert the output shaft of the 4l60e to the same length as the th350/700r4, but some cite tranny pan interference with the front driveshaft.

The same logic follows with the 4l80e, as it is still 32 spline like the th400. You could use a th400 version 205. These cases are harder to come by and more expensive. But of coarse, a much better setup.

either would be fine for most applications.

07-26-2011, 01:30 PM	#2
ncgamedog Registered User Join Date: Jul 2007 Location: Union Grove,NC Posts: 58	Re: 5.3 or 6.0 LSx swap in 72 K10? http://67-72chevytrucks.com/vboard/f...play.php?f=206 You could still run a GM 205. Just because the trans originally had drivers drop T-case, doesnt mean you cant run a passenger drop case. Its not like the trans spins a different way or anything. The 4l60e is basically a newer version of the th305/700r4. While there are marked differences, the output shaft on the 4l60e is still 27 spline like its earlier predecessors. This means that you can mate a th350 version 205 behind it, as those had 27 spline inputs. It will require that you use the earlier (1992-97) 4 bolt flange version of the 4l60e, combined with a 2" aluminum spacer and normal th350 T-case adapter. The 4l60e has a longer output shaft than the th350/700r4. There is a short shaft available to convert the output shaft of the 4l60e to the same length as the th350/700r4, but some cite tranny pan interference with the front driveshaft. The same logic follows with the 4l80e, as it is still 32 spline like the th400. You could use a th400 version 205. These cases are harder to come by and more expensive. But of coarse, a much better setup. either would be fine for most applications. Last edited by ncgamedog; 07-26-2011 at 01:45 PM.