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Ok I have seen the multiple threads on the pros/cons on it and see Speartech now has a kit. Simple question.
I can see the 6 speed is bigger around than the 4 speed. Has anyone measured and documented the various circumference differences between these 2 trannies? IE clearing various floorpans...specifically the TBSS!
I see there is a length difference of 35mm in the two 6L's, but what's the length difference between the 6 speed and 4 speed?
Ok I have seen the multiple threads on the pros/cons on it and see Speartech now has a kit. Simple question.
I can see the 6 speed is bigger around than the 4 speed. Has anyone measured and documented the various circumference differences between these 2 trannies? IE clearing various floorpans...specifically the TBSS!
I see there is a length difference of 35mm in the two 6L's, but what's the length difference between the 6 speed and 4 speed?
Referring to the shots Phil dropped in, the trans are roughly the same length.
At the front (where the convertor housing joins the main case), the dimensions are similar, and as the profile heads to the rear of the trans, the size gets in the way. The rear of the case is 8" in diameter. You can scale off this.
The pan is narrower than the 4L60/65, but overall deeper because the trans is taller at the rear, by 2 - 3".
The pan actually takes up less room (in i.e. a Camaro tunnel), than the 4L.
I think I have the dimensions written down somewhere, which I took when I took the photos originally.
From what I have seen, the core case is the same on the 6L80 and 6L90 regardless of application. And yes then the transfer case, or the transaxle in the case of Corvette, bolts on. (And if I recall correctly, the case on the 4L's is the same too....but who knows what variations are out there that GM has released...)
From what I have seen, the core case is the same on the 6L80 and 6L90 regardless of application. And yes then the transfer case, or the transaxle in the case of Corvette, bolts on. (And if I recall correctly, the case on the 4L's is the same too....but who knows what variations are out there that GM has released...)
I know the case are te same lenght 4x4 vs 4x2. I am talking about the differents in the case lenghts between the 4l60 to the 6l80 were the tailhousing or transfercase/axle bolts. it look 3'' to 4'' from were the 4l60 is.
The 4x4 6l80 has a shorter output shaft than the 4x2.
Isn't the 6l80 a 32 spline output same as the 4l80?
__________________ '73 Scout II 4x4 Vortec 5.3 4L65E np241
'01 VW Beetle TDI-50mpg or better!
'56 Belair 4 door hardtop*next LSx project* 5.3/4l60/3.08's (looking for 25+mpg!)
I know the case are te same lenght 4x4 vs 4x2. I am talking about the differents in the case lenghts between the 4l60 to the 6l80 were the tailhousing or transfercase/axle bolts. it look 3'' to 4'' from were the 4l60 is.
The 4x4 6l80 has a shorter output shaft than the 4x2.
Isn't the 6l80 a 32 spline output same as the 4l80?
If you mean the extension housing, yes. 6L80/90 are shorter that 4L60/5. The 6L90 shown has an extension housing ~6" long (excluding the boot).
I have not checked the 6L80 personally, but have been advised it is the regular size spline. 6L90 very large.
What year TBSS do you have? Keep in mind that the 58 tooth relector ring didn't show up until 07 on these motors. (required for the 6L80/90 Trans)
I think it's been beaten to death on the TBSS forums.
Transmission tunnel modifications required.
Here is a good illustration of the size difference:
in the top pic on the left there a black plug is this the LEVEL and the one in the bottom of the pan is just a drain plug ??
__________________ [SIGPIC]
hsv maloo LS3, A6 with TVS2300 on 10 psi harrop twine pump in tank fuel system 224/228/114 comp 1.7/8 long tubes 3"duel system + DUSS OTR ,lowerd on tiens
20"GTS rims
it has a 4l60e currently.... so i would like to change it to a 6 speed transmission (6l80e)
the thing is that I'm not sure whether the transfer case adapter will bolt straight on to the 6l80e.
so i need your help to tell me whether the 4l80e and the 6l80e bolt pattern are the same or not (linking to the transfer case)
got the transfer case adapter from marks4wdadapter
so if anyone, please help
4l60e/4l65e/4l70e >>> 6l80e/6l90e 
