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Chebby Guru's and Parts Geniuses...

Discussion in 'The Garage' started by cmcolfax, Sep 28, 2005.

  1. cmcolfax

    cmcolfax Registered Member

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    Following is a collection of questions I have cut-n-pasted from several other places to try to give y'all a complete picture...

    THANKS!

    Ya'll know TONS more about Chebby's than I ever will!

    -cmc-
     
  2. gauder

    gauder Banned

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    Why not an NV3500/np241 then? Still have overdrive, hydraulic clutch and 2.72:1 low range for weekend fun.
     
  3. cmcolfax

    cmcolfax Registered Member

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    Where would that combo be found? 90's 1/2 tons?

    Rough price point in working conditon from a JY?

    Would that combo still bolt up to my Early 80's 305?

    THANNKS!

    (I told you that y'all knew more about Bowties than I ever will!)

    -cmc-
     
  4. zero cool

    zero cool 1/2 ton status

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    My CJ7 has an SM465 mated to an AMC 360 via an Advanced Adapters bellhousing. The ability to use the stock hydraulic clutch with their conversion bellhousing made life easy.

    They have numerous adapters to mate many different engines and transmissions. http://www.advanceadapters.com/

    Novak adapters http://www.novak-adapt.com/ also has a number of adapters to mate engines and transmissions. I like their adapter to hook up an AX-15 to a Chevy bellhousing. That's a good medium duty tranny that would hold up to the 305 fine. It's an overdrive so you can step up the axle gears to give you the good crawl ratio. And you can bolt up a Jeep Dana 300 t-case with just a spacer/clocking ring. The D300 would have the correct passenger side drop. You can find both the AX-15 and D300 on ebay for not much. And with the hydraulic clutch and good first gear ratio, the fiance wouldn't have too much trouble driving it.
     
  5. cmcolfax

    cmcolfax Registered Member

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    I have read the NOVAK and AA pages until my eyes bleed... SO MUCH GREAT INFO ON THEM!!!

    The conversion bellhousing for the Jeep AX15 is interesting but I believe will become cost prohibitive quickly (even though I can score an AX15 and/or D300 for short money... hey, I am a Jeep guy... :rolleyes: )

    -cmc-
     
  6. zero cool

    zero cool 1/2 ton status

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    I'm more of a Jeep guy for my buggy platform but I've been a Chevy guy since I learned how to drive in a 77 Caprice Estate wagon. And I'm starting to look for a do-it-all trail riding/daily driver/hunting rig and that lead me to the K5 so I'm going to be a Jeep and K5 guy as soon as I get the truck sold and get into a K5. :D

    I know what you mean about the adapters being expensive. But when it comes to Chevy, there isn't much choice for medium duty equipment outside the S-10 realm. You may consider getting the transmission from a wrecked S-10 of some kind. But they use a driver drop t-case and that won't work in the CJ without mods. And those mods can add up.

    I bet if you get a decent hydraulic clutch to work with that SM465, the fiance shouldn't have much trouble driving it. That is, assuming she's not too dainty. ;)
     
  7. cmcolfax

    cmcolfax Registered Member

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    "Dainty" is a good word to describe someone who is 5'4" and weighs less than 110lbs soaking wet and clothed! :rolleyes:

    Total bolt awn is not a requirement. But I am not swapping axles just to make a T-case work, ya know?

    I know I am cutting the tub no matter what I put in, but hey, it's fiberglass!

    Keeping the engine & drivetrain "the same" (as in all GM) would be nice; if not; I would like to try keeping the tranny & xfr "the same" (as in a "combo" that was factory available be it GM or Jeep).

    A few more bits of info I have found...

    So if I start lookin' I can look for a 1988-1998 GM 1/2 or 3/4 ton...

    Can anyone add anything to this?

    Can I assume the 3500 bellhousing will bolt to the 305 if it comes out of a GM?

    What T-cases were used?

    Are any PS drop?

    THANKY!

    -cmc-
     
  8. darenofears

    darenofears Registered Member

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    sm465 just takes a little gettilng used to because you have to move the stick more and low is unsynchronized
     
  9. cmcolfax

    cmcolfax Registered Member

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    Which is kinda why I am exploring other options...

    As I said in the first post, it did not bother me and I would get the hang of it quickly because I have some heavy truck experience.

    I am trying to make this rig reasonably easy for my fiance to drive as well..

    So far, the consensus seems to be this:

    I should most likely be looking for a 1988 or newer GM 1/2 Ton to find a NV3500 (5-speed) with a NP241 (PS drop)...

    Should be easy enough as I assume they are plentiful in JY's.

    -cmc-
     
  10. zero cool

    zero cool 1/2 ton status

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    They should be plentiful enough. But with automatics outselling manuals by a very wide margin, they may not be as plentiful as you want in JYs. It may take some digging. But many of them share computerized inventories and can look around for you to find what you're looking for.
     
  11. cmcolfax

    cmcolfax Registered Member

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    I've got a couple good ones near me here in Central VA... some are pick-and-pull, others are more high tech and have computerized inventories and links to other "used auto parts facilities" :haha:

    Some more bits of info...

    Can anyone confirm / verify this?

    I may keep this thread alive and use it as a sort of "clearinghouse" for information as I find it if that is OK with y'all.

    -cmc-
     
  12. gauder

    gauder Banned

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    NV3500's out of 1/2 tons were 32 spline.
     
  13. cmcolfax

    cmcolfax Registered Member

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    Another tidbit to add to the file.

    Hopefully I will be able to find a matched set... and not have to worry about input shaft spline count... :rolleyes:

    -cmc-
     
  14. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    There were a few years where the default 5 speed was a Getrag not an NV3500. They're very similar tranny's as far as ease of shifting/driving and strength goes.

    PS drop T-cases that'll bolt up to it are the NP208 (stuck using a slip yoke though) and the PS drop 241 found in 89-91 K5's and Suburbans.

    As for bolting up to the 305, in a word yes. They came behind the 4.3 V-6, the 5.0 V-8 as well as the 5.7 V-8. The are a completely aluminum tranny and the bellhousing is an integral part of the tranny. Slave cylinder is on the passenger side though...which may cause driveline clearance problems depending on how tight things are under your Jeep.

    Behind a 305 in a light Jeep it should last quite a long time...and it's a very car like tranny.

    IIRC first gear is ~4:1 so the crawl ratio wouldn't suffer much. 465/205 with 4.10's would be 52.63:1, Getrag/241 with 4.10's would be 44.6:1.

    Rene
     
  15. cmcolfax

    cmcolfax Registered Member

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    :D

    I learned A LOT about Chebby's today! (I did not have to work so guess what I did all day?)

    Does not make much difference to me if it is the Getrag or the New Venture (although I did think they were the same tranny :doah: ).

    I will be looking for the PS drop NP241. I read that the 89's still had the mechanical speedometer hook up instead of the computer controlled VSS so that is one more variable since I have no other engine electronics on the vehicle.

    Slave cylinder clearance SHOULDN'T be a problem. The CJ is currently sitting on 2" springs and a 2" BL supports the fiberglass tub. There is plenty of room around the TH350 that is in there now.

    Light is not even the word... I figure 2500lbs tops! The title lists it as 2850lbs and that was from the factory with a steel body and hard top!

    THANKS ALL... and I'll keep ya posted as the research / search progresses!

    If anyone has more info, thoughts, ideas or suggestions, post 'em up!

    -cmc-
     
  16. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    If you find a electronic speedo version of the NP241 you can get the super short SYE kit for it from JB conversions. There is a write up on the regular SYE kit on the home page somewhere. Should be compatible with the aftermarket speedo's...

    Rene
     
  17. fireplug

    fireplug 1/2 ton status

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    Wow, all those responses and not one said get rid of the girl? Hmmm. Well how about get the girl a $500 beater? ;)
     
  18. Brocky

    Brocky 1/2 ton status

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    :eek1: :haha: :bow: That would be the way I look at things. My K5 is going standard so the woman can't drive it. Buy her a Tercel or something. :D
     
  19. cmcolfax

    cmcolfax Registered Member

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    :haha:

    She likes manual tranny's.

    She actually LIKED driving my old CJ (258/T5).

    We sold my CJ and her 94 4.6L Mustang GT (5-sp) and got "responsible" and bought a Cherokee and an 04 Chebby Malibu.

    The Cherokee is still my DD (with 4" lift and 32's) but we wanted another toy so we bought the current CJ as a "mostly done" project from a guy who lost interest.

    Now just trying to make it in to what we BOTH want... I want to be able to wheel it, she wants to be able to run it on fire roads and whatnot and on the street.

    You guys have all been VERY helpful... I appreciate that!

    -cmc-
     
  20. cmcolfax

    cmcolfax Registered Member

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    :bumpity:

    Just for more thoughts and opinions!

    -cmc-
     

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