How do i read the tag on my np205 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

acgergcadillac · 12-12-2017, 02:09 PM

I need to know how to read the serial number off my np205 transfer case so i can know how many splines it has because im wanting to do an ls 5.3 swap and i need it to mate up to a 4l60e trans please help

**Ol Blue K20** · 12-12-2017, 02:48 PM

I'm interested too.

CrewCab59 · 12-12-2017, 06:14 PM

The gm Np205 only came 10 27 and 32 splines.

10 splines Sm465 manual trans.
27 splines auto Th350.

Thanks

acgergcadillac · 12-12-2017, 06:56 PM

thanks that was very helpful.

**CUSTOM/10** · 12-12-2017, 07:21 PM

The 27 spline from behind a th350 is the correct spline count for the 4l60e, but the 4l60e out put shaft is too long. So you either need a spacer to accommodate the extra shaft length or you need to replace the out-put shaft with a shorter shaft from Advanced Adapters. You will also need the adapter from a NP205 / th350 set-up.

Gary

acgergcadillac · 12-12-2017, 07:28 PM

anyone have any idea how i would hook up a shifter linkage with a column shifter to the 4l60e?

12-12-2017, 02:09 PM	#1
acgergcadillac Registered User Join Date: Dec 2017 Location: Harvard Illinois Posts: 5	How do i read the tag on my np205 I need to know how to read the serial number off my np205 transfer case so i can know how many splines it has because im wanting to do an ls 5.3 swap and i need it to mate up to a 4l60e trans please help

12-12-2017, 02:48 PM	#2
Ol Blue K20 Proprietor of Dale's Corner Join Date: Nov 2012 Location: Vacaville , CA Posts: 15,834	Re: How do i read the tag on my np205 I'm interested too. __________________ "Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man

12-12-2017, 06:14 PM	#3
CrewCab59 Registered User Join Date: Jul 2010 Location: Knoxville,TN Posts: 1,191	Re: How do i read the tag on my np205 The gm Np205 only came 10 27 and 32 splines. 10 splines Sm465 manual trans. 27 splines auto Th350. Thanks __________________ 1972 Custom Deluxe 20 4x4 burb 1971 GMC SWB CST 4x4 1972 GMC k20 4x4 (X- brush truck ) 1971 Chevy CST Blazer 4x4 1971 Chevy C/10 1970 Cab Chassis C30 157" 1971 Cab Chassis Custom 30 Deluxe 157" 292/4spd ( Napco Replica ) 1988 Chevy V30 4x4 wrecker challenger 4812

12-12-2017, 06:56 PM	#4
acgergcadillac Registered User Join Date: Dec 2017 Location: Harvard Illinois Posts: 5	Re: How do i read the tag on my np205 thanks that was very helpful.

12-12-2017, 07:21 PM	#5
CUSTOM/10 Senior Member Join Date: May 2003 Location: Sandown, NH Posts: 2,795	Re: How do i read the tag on my np205 The 27 spline from behind a th350 is the correct spline count for the 4l60e, but the 4l60e out put shaft is too long. So you either need a spacer to accommodate the extra shaft length or you need to replace the out-put shaft with a shorter shaft from Advanced Adapters. You will also need the adapter from a NP205 / th350 set-up. Gary __________________ Gary 72 SWB 4x4 My 72 SWB Build http://67-72chevytrucks.com/vboard/s...d.php?t=259859

12-12-2017, 07:28 PM	#6
acgergcadillac Registered User Join Date: Dec 2017 Location: Harvard Illinois Posts: 5	Re: How do i read the tag on my np205 anyone have any idea how i would hook up a shifter linkage with a column shifter to the 4l60e?

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