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#1 |
Registered User
Join Date: May 2011
Location: Mayflower,AR
Posts: 802
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92 5spd swap in my 70
Is this smart to do? Im really wanting to get rid of the t350 and go standard. Just found a 92 truck 5 spd on craigslist for 150. Whats it take to swap? Can it handle 400hp sbc? Or should i buy it and save it for the 3/4 c20 i want for pulling stuff. I wanna make the truck more fun to drive
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-Mike- '94 GMT 400 ext z71 3" body, 3 in rough country, hd mirrors, 20" motometals on 35s |
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#2 |
motor exploder
Join Date: Mar 2009
Location: Pittsburgh, PA
Posts: 2,346
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Re: 92 5spd swap in my 70
Search 'NV3500' (might also try MG5 or Getrag 5 speed) plenty of info on the forum already.
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#3 |
Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: 92 5spd swap in my 70
Put it towards the Cheyenne Super. That looks like it could be a good start.
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Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
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#4 |
Registered User
Join Date: Jan 2007
Location: Topeka,KS
Posts: 778
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Re: 92 5spd swap in my 70
If it's the NV4500, I would put it into the C20. I don't think you would want a NV3500 in a 400hp street truck. I would go with a T5 or T56. The early GM 5spds are Gertrag. I heard you want to stay away from them. Especially the heavy duty ones.
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68' C20. 283CI w/55CC 305HO heads, NP435 Close Ratio, Corp. 14 bolt FF 3.21, 75' front end swap (everything but the X-member). Last edited by airdale94; 05-11-2013 at 01:16 PM. Reason: add |
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#5 |
Registered User
Join Date: May 2011
Location: Mayflower,AR
Posts: 802
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Re: 92 5spd swap in my 70
Its probably a 3500 and if it goes in my street truck itll be behind 400hp. If it goes in a c20 itll just replace the old 4spd as a work truck with overdrive gears as a dailydriver
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-Mike- '94 GMT 400 ext z71 3" body, 3 in rough country, hd mirrors, 20" motometals on 35s |
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#6 |
Registered User
Join Date: Jan 2007
Location: Topeka,KS
Posts: 778
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Re: 92 5spd swap in my 70
I would do either a rear end swap, if you have the H052 you can do a 14bolt out of a 73-87 then you can run whatever gears you want. Or if you have the Dana you can probably get gears for those. The 14 bolt is what I want to do. You really can't beat those old truck 4-speeds. There fairly easy to rebuild. Novac has kits and instructions for them. I like my gears to run me about 2500 RPM at 65mph. 3.55 will put you a little over 2500. You can go clear down to 3.08 if you don't do alot of really heavy towing.
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68' C20. 283CI w/55CC 305HO heads, NP435 Close Ratio, Corp. 14 bolt FF 3.21, 75' front end swap (everything but the X-member). |
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#7 |
Scrapper 1
Join Date: Jan 2007
Location: Riverside Calif
Posts: 1,649
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Re: 92 5spd swap in my 70
you must be young and live in a city with not that many car's on the road.here in Calif we welcome a 700R4 any day to spending 2 hours on the freeway in bumper to bumper traffic
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#8 |
Registered User
Join Date: Jan 2009
Location: Binghamton, N.Y.
Posts: 116
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Re: 92 5spd swap in my 70
I'm currently working on a later model NV3500 (model year 93+). They're the single-rail 5 speeds, versus the earlier 4 rail units used until 1992. They're a bit more reliable than the 4 rail you're looking at on Craigslist, however from all I've read, they're fairly decent transmissions if you don't abuse them. For the power you're making, I'd say they're a little fragile for your application. I'm putting mine behind a 355 with an RV cam, Q-Jet, headers and Z28 valve springs (everything else is stock). Should be right on the brink of an NV3500s strength with that setup. I don't plan on abusing the truck though (burnouts, launches etc), so I don't think I'll break anything.
If you've got questions, let me know! |
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#9 | |
Registered User
Join Date: May 2011
Location: Mayflower,AR
Posts: 802
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Re: 92 5spd swap in my 70
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-Mike- '94 GMT 400 ext z71 3" body, 3 in rough country, hd mirrors, 20" motometals on 35s |
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#10 | |
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Join Date: Aug 2012
Location: error 404 location not found
Posts: 816
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Re: 92 5spd swap in my 70
Quote:
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1995 s10 blazer 4.3 1967 c10 350/350 fleet short 1993 s10 blazer 4.3l 4l60 RIP 6/20/14 2000 mercury sable Thats a how I roll |
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