10-17-2023, 04:27 PM | #1 |
Registered User
Join Date: Jul 2004
Location: Huron, SD
Posts: 21
|
NP440 MY6 help
Hello All!
I am actually working on a 71 C10 that has a saginaw 4 speed in it right now, but i want to swap it out for an NP440 MY6 overdrive transmission and need your help (you guys are the experts on these since they were in the 80's) - i know from viewing pictures of this NP440 trans that a bunch of them do not have the exact same bolt pattern as the saginaw/muncie - but some do have the same. In my case, i need to retain the bellhousing that my truck currently has (saginaw 4 speed) and I want to find an NP440 / MY6 that has this same pattern - are they rare to the point i wont find one? Last edited by cwcarpenter98; 10-18-2023 at 11:17 PM. Reason: Edited out WTB |
10-17-2023, 07:08 PM | #2 |
Senior Member
Join Date: Feb 2011
Location: Corona, CA
Posts: 1,842
|
Re: NP440 MY6 help
Lots of information here. They still come along here and there, but best you get a complete unit with shifter and linkage.
http://67-72chevytrucks.com/vboard/s...d.php?t=574221
__________________
MusicMan70 1961 GMC Suburban Last edited by MusicMan70; 10-17-2023 at 07:13 PM. |
10-18-2023, 09:25 AM | #3 |
Registered User
Join Date: Jul 2004
Location: Huron, SD
Posts: 21
|
Re: NP440 MY6 help
thanks for posting that link - lots of good info.
Definitely need to find a complete one with shifter it seems! thanks all! Last edited by cwcarpenter98; 10-18-2023 at 11:16 PM. Reason: Edited out WTB |
01-05-2024, 03:50 PM | #4 |
Registered User
Join Date: Jul 2004
Location: Huron, SD
Posts: 21
|
Re: NP440 MY6 help
Please note that you must be a supporting member to post classified items. This includes but is not limited to What Its Worth, Want To Buy, Want To Trade, and For Sale. Please consider supporting the forum by subscribing. Further information on the subscription levels available are located here
If you need any further assistance with that please contact any Admin for help. Last edited by cwcarpenter98; 01-05-2024 at 11:27 PM. |
01-23-2024, 10:32 AM | #5 |
Registered User
Join Date: Jul 2004
Location: Huron, SD
Posts: 21
|
Re: NP440 MY6 help
ah yes, ^^^ these posts getting removed/overwritten reminds me of why i quit using these boards in the first place - i wondered why it had been so long since i was here, now i remember!
|
02-01-2024, 12:48 AM | #6 |
Registered User
Join Date: Oct 2013
Location: lousiville Ky
Posts: 2,645
|
Re: NP440 MY6 help
A few photos of 1986 C10 w/LY6 trans from factory, for reference.
First photo is truck before restoration. The remaining photos show original LY6 shifter, last shows close up of shift knob. This is the later version of the shifter, available on 86 and 87. Not sure first years to use this shifter. Last edited by aotte1; 02-01-2024 at 01:03 AM. |
02-11-2024, 12:45 PM | #7 |
Registered User
Join Date: Apr 2011
Location: Tacoma, Washington
Posts: 236
|
Re: NP440 MY6 help
I did this swap in my 69 C10 probably like seven years ago. I found a complete one with shifter. I rebuilt it and it was way more fun to drive compared to the SM465. The only issue I had was when shifting out of reverse it would sometimes bring 1-2 with it. I should've rebuilt the shifter or installed bronze bushings in the shifter linkage. I thought it was odd they took ATF instead of the normal 80w90, but liked the fact the gear ratios were nearly identical to a 700R4.
__________________
Erik 1969 Chevy K20 6.0L/4L80E/NP205 1971 Chevy C30 Cheyenne Longhorn 454/TH400 1979 Chevy K30 dually currently in pieces |
Bookmarks |
|
|