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06-15-2012, 02:34 AM | #1 |
Registered User
Join Date: Nov 2011
Location: Spring creek nv
Posts: 12
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Tranny and transfer case identification?
I have a 1967 Chevy k20 stepside with what I believe to be the original transmission and transfer case but I don't know what either of them are. The transmition is a four speed, first gear does not seem to be synchronized and reverse is left and down. The transfer case is an all time for wheel drive. I think it's a np 203 of 204. Any help with this would be great, thanks.
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06-15-2012, 03:55 AM | #2 |
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Join Date: Sep 2000
Location: Gold Bar, WA
Posts: 1,216
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Re: Tranny and transfer case identification?
Stock would be the SM-420 and a Rockwell T221 transfer case. If it's a full time 4wd t-case that would most likely be a newer NP-203. Pics would help greatly.
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My Projects: 1960 GMC 1/2ton with 305 V6 (daily driver) 1963 Chevy 1/2ton 2wd...converting to 4x4 1967 Suburban 1/2ton 2wd My Girlfriends Projects 1985 Chevy Suburban 3/4ton 4x4 with 6.2L diesel, 4" lift, converted to TH-400, Warn Premium manual hubs, & Wildcat 315/75/R16 tires. (daily driver) 1978 Camaro Type LT with a Marine 350 & vortec heads, Rochester Carb, & roller cam 1978 Camaro Z28 |
06-15-2012, 12:32 PM | #3 |
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Join Date: May 2009
Location: Pinehurst, Idaho
Posts: 311
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Re: Tranny and transfer case identification?
Sounds like it has an sm420 and a rockwell. It probably just doesn't have lockout hubs on the front. The shift pattern for the rockwell i think is 4hi towards the dash, then 2hi, nuetral, and 4lo all the way back towards the seat. The np203 wasn't available yet in 67.
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06-16-2012, 02:59 AM | #4 |
Registered User
Join Date: Nov 2011
Location: Spring creek nv
Posts: 12
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Re: Tranny and transfer case identification?
Well.. I feel kinda dumb but the jute matting and sound dettenor was restricting the transfer case from going all the way forward. I looked up rockwells and it looks like them. But the transmission does sound like a sm420? Thanks a ton for the help
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