Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

NV4500 Swap

Discussion in 'The Garage' started by Buzz, Oct 10, 2005.

  1. Buzz

    Buzz Registered Member

    Joined:
    Nov 18, 2001
    Messages:
    30
    Likes Received:
    0
    Location:
    Alabama
    Anyone have a write-up or a good place to view conversion details. I pretty much need it all so any help would be useful
     
  2. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

    Joined:
    Jan 27, 2003
    Messages:
    3,254
    Likes Received:
    0
    Location:
    Castro Valley, CA
    What year truck? What year tranny? What t case? I can help you out.
     
  3. Buzz

    Buzz Registered Member

    Joined:
    Nov 18, 2001
    Messages:
    30
    Likes Received:
    0
    Location:
    Alabama
    well, my truck is an 89 k5. I am looking around for a tranny so i don't know what year yet. I know i want to go with a manual this time, for reliability and control, etc... I know the 465 swap would be easier but i want the OD that comes with the 4500. I know with the 4500 that I will need to fab a new crossmember but I doubt that can be very hard. thanks
     
  4. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

    Joined:
    Jan 27, 2003
    Messages:
    3,254
    Likes Received:
    0
    Location:
    Castro Valley, CA
    Well a 4500 isnt much harder to swap in then a 465, the hardest part will most liekly be the pedal setup.

    Lets start with the tranny:
    93-94 GM ONLY has the 6.31 first gear and a .73 OD
    95-03 GM and Dodge has a 5.61 first gear and a .73 OD

    Then there are 2wd and 4wd versons.
    GM 32 slpine 2wd output shaft
    GM 32 spline 4wd output shaft
    Dodge 23 spline 4wd output shaft
    Dodge 29 spline 4wd output shaft
    Dodge 30 spline 2wd output shaft
    Dodge 31 spline 2wd output shaft


    Im assuming you will use a 205? Advance adapters makes a kit to mate it to a 205.

    205 originally mated to a th350, in 71-79 vehicles, Male 27 spline input, figure 8 bolt pattern.
    205 originally mated to a 465, in 71 to 84/85 vehicles, 10 spline input, figure 8 bolt pattern.
    205 originally mated to a th400, 79 to 84/85 vehicles, female 32 spline input, figure 8 bolt pattern.
    205 originally mated to a 465 or 400, in 85-91 vehicles, female 32 spline input, circular 6 bolt pattern.

    Now what ever t case you pick, theres different options to mate them together.

    For a 4500 replacing a 465 the overall length is 26.250", approx. 1" longer.
    For a 4500 replacing a th350 the overall length is 26.750"

    AA gives you all the adapters to make it work, however mine needed some modification. The tranny x member was an inch or so to the rear. they give you and adapter, but it wouldnt work. I could have either drilled new holes for the crossmember or, fab a different adapter mount, which is what I did. Also I had troubles with the t case shifter adapter. This was in a 72.

    Hope this helped a little, anyhitng else and Id be glad ot help.
     
  5. RootBreaker

    RootBreaker 1/2 ton status Premium Member

    Joined:
    Nov 29, 2001
    Messages:
    4,856
    Likes Received:
    27
    Location:
    Williamstown, NJ USA
    nice information.....

    dont forget if you have a automatic now.. and wanna go manual...
    you have to buy the clutch pedal assembly...

    that is all that wasnt covered above.... so what do you need for a nv4500 on the clutch side?

    gonna need a flywheel ($120 new)
    clutch, pressure plate, throwout bearing ($130 autozone new lifetime warr)

    Bellhousing?????? which one.. will a smc465 bell work?

    hydraulic or manual clutch style?

    I just went to hydraulic clutch... so is it the same bellhousing? I thought I read something where the clutch fork is on the opposite side (passenger side) so I dunno...


    I do still have the clutch pedal assembly for a mechanical clutch setup.. I have the bellhousing, clutchfork (new), zbar, spring.....
     
  6. atho

    atho 1/2 ton status

    Joined:
    May 14, 2003
    Messages:
    1,115
    Likes Received:
    0
    Location:
    Wayne County, Ohio

    Hmm...so, theoretically, you could adapt a GM 32 spline female NP205 to a GM version, and a Ford 31 spline to a Dodge 2wd, assuming you cut off the yoke. Is this feasible?
     
  7. K5MONSTERCHEV

    K5MONSTERCHEV 1/2 ton status

    Joined:
    Jan 27, 2003
    Messages:
    3,254
    Likes Received:
    0
    Location:
    Castro Valley, CA
    No it wont
    YOu can get a stock GM bellhousing found in 93-95 GM trucks, but they have the slave on the passenger side, which might be a problem with low lift vehicles.

    Theres also the stock GM bellhousing used in 96 and newer GM trucks, but they have an internal slave.

    Or a Advance Adapters bellhousing, they have a few different ones.

    Or they make adapter plates, which I wouldnt use.

    Yes, if it has the circular bolt pattern. You have to add a spacer for the extra length on th einput. OR change out to the short version input.
     
  8. gauder

    gauder Banned

    Joined:
    Aug 26, 2005
    Messages:
    1,613
    Likes Received:
    0
    Location:
    done
    You could use a 32spline np 241c trans case though couldn't you?
     
  9. atho

    atho 1/2 ton status

    Joined:
    May 14, 2003
    Messages:
    1,115
    Likes Received:
    0
    Location:
    Wayne County, Ohio
    iirc, the NP241 did come behind the NV4500 OEM.
     
  10. mitchelm

    mitchelm Registered Member

    Joined:
    Jul 11, 2005
    Messages:
    16
    Likes Received:
    0
    Location:
    NJ
    How hard would it be to swap an nv4500 into a 72 blazer that came with a 3 speed

    saginaw that is a 27 spline male output? I obviously have to replace my manual with something else, and if I'm going to spend the money, the NV4500 sounds like a very nice option. Would the adapter from the auto350 work since that is also 27 spline?
     
  11. peterpan

    peterpan Registered Member

    Joined:
    Aug 18, 2006
    Messages:
    95
    Likes Received:
    0
    Location:
    WYOMING
    i have a 85 that i am converting from a auto to a nv 4500

    i have the pedals out of a 87 installed
    and i have a 94 nv 4500 with the bellhousing,flywheel,clutch,slave and master basically flywheel to the transfercase

    i have a 89 241 t-case from a 400 tranny (89 suburban pass side drop)

    or a 87 208 t-case from a 465

    my questions are

    what do i have to do to cross breed the hydrolic clutch parts cut and splice the hard lines together?

    and witch t-case would be best to use?

    its only a daily driver pavment pounder so i don't need the strength of a 205

    it has a 6'' lift so i don't think i will have problems with the pass side slave

    thanks for any advice
     
  12. BGKYK5

    BGKYK5 3/4 ton status GMOTM Winner

    Joined:
    Nov 1, 2006
    Messages:
    5,984
    Likes Received:
    1
    Location:
    on the crapper...
  13. Russell

    Russell LB7 Tahoe Status Premium Member GMOTM Winner

    Joined:
    Jun 23, 2000
    Messages:
    7,829
    Likes Received:
    153
    Location:
    Fort McMurray, Alberta
    I have one in my 80 K25 which is lifted 6", it is a 93 trans with the external passenger side slave cylinder. At normal ride height I have only got about 3" of clearance between the slave cylinder and the front driveshaft. I could definitely see it causing some problems even on a truck with 6" of lift that is actually used offroad.

    Dunno if it was mentioned or not (didn't read the whole thread), but you can bolt either a 32 spline NP208 or NP241 onto the back of it with no adapters or spacers. The thing also bolts directly into place of a 32 spline SM465, you can use the 465's crossmember, and the driveshafts if you run a 208 or 241.

    I'd personally go with an internal slave trans if I were to do it again, just to get rid of the clearance issues. If you need any help with the clutch, please let me know and I can pass on a few ideas.
     
  14. peterpan

    peterpan Registered Member

    Joined:
    Aug 18, 2006
    Messages:
    95
    Likes Received:
    0
    Location:
    WYOMING
    thanks guys the links are some good reading

    Russell
    how did you connect the master and slave cut and splice the 93 and 85 lines together?

    i was thinking the 241 or the 208 would bolt up but i wasn't sure

    my thoughts are to run the 208 but is there any reason to run the 241 over the 208?


    i have a 83 blazer with 1 ton drive train and a 427 lockers and 38 inch swampers that i beat on i don't need another off road truck

    my plan for this truck is a fuel injected 350 nv4500 reliable low maintanance good looking daily driver pavment pounder i should be ok with the low drive shaft slave clearance
    i'm not even sure it will get a front drive shaft for awhile

    i started with a bare frame so i can build it the way i want it
    i have plenty of 81 to 91 trucks and blazers to pick threw for my parts
     
  15. DEMON44

    DEMON44 Low-Tech Redneck Premium Member

    Joined:
    Jan 8, 2003
    Messages:
    7,232
    Likes Received:
    14
    Location:
    Okotoks, Alberta
    I have a '97 internal slave GM NV4500 F/S if anyones interested.......nothing to see here, don't mind me, go on about your business.
     
  16. bww3588

    bww3588 Registered Member

    Joined:
    Mar 2, 2010
    Messages:
    96
    Likes Received:
    0
    Location:
    Chillicothe/Lima, Ohio
    whats wrong with the internal slave? you make it sound like a bad thing? what master cylinder do you have to run....im really wanting to pull the trigger on this swap, but damn are the 4500's expensive. this is pushin t56 price territory...
     
  17. bww3588

    bww3588 Registered Member

    Joined:
    Mar 2, 2010
    Messages:
    96
    Likes Received:
    0
    Location:
    Chillicothe/Lima, Ohio
    btw, i have an 89 K5 i want to do this swap in. i currently have a 700R4 behind a beat TBI 350. i have a carb'd 350 waiting to go in, and really dont want to push my luck on the 700.
     
  18. bp71k5

    bp71k5 3/4 ton status Premium Member

    Joined:
    Mar 31, 2006
    Messages:
    6,048
    Likes Received:
    97
    Location:
    San Jose, California
    His reply was over 5 years ago, but if he was still around he probably say that the internal slaves require removing the trans when it goes bad, and some people say they do go bad fairly often. I've also heard that when they go bad, they can take out the input shaft and other parts along with them.
     
  19. bww3588

    bww3588 Registered Member

    Joined:
    Mar 2, 2010
    Messages:
    96
    Likes Received:
    0
    Location:
    Chillicothe/Lima, Ohio
    i know you have to remove the tranny to get to the slave...why do they go bad? ive never had one go bad in my LS1 Z28 and if it does, its only after years of beating the piss out of it at the track. i dont plan to take this to the limit off road, but i do want to be able to drive it everyday and occasionally take it back in the fields and mess around.
     
  20. bww3588

    bww3588 Registered Member

    Joined:
    Mar 2, 2010
    Messages:
    96
    Likes Received:
    0
    Location:
    Chillicothe/Lima, Ohio
    define fairly often. lol
     

Share This Page