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08-15-2022, 09:42 AM
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#1 |
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Senior Member
 Join Date: Jun 2011
Location: ST LOUIS MO
Posts: 2,097
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1985 auto to 5 speed
I have a 85 2wd with a th350 and wanting to change it over to a 5 speed has anyone tryed this before
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08-15-2022, 06:04 PM
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#2 |
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Proud Vet that loves the USA
Join Date: Jun 2016
Location: Beebe, AR
Posts: 458
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Re: 1985 auto to 5 speed
You will need to find a set of clutch pedals. Does your transmission have a hydraulic or manual release bearing.
Many people have switched over, I have a 6-speed in my C10. Bubba |
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08-15-2022, 07:06 PM
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#3 |
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Moderator
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,912
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Re: 1985 auto to 5 speed
Get a manual transmission pedal set for the 85-91 squarebodies. They had hydraulic clutches.
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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08-15-2022, 07:09 PM
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#4 |
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Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,524
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Re: 1985 auto to 5 speed
I put a NV4500 in my 85 K20 a year ago. Best mod I ever did. I can tell you everything you need to know about it. I also have 3 pedal assemblies if you're interested.
Last edited by SunSoaked; 08-15-2022 at 07:21 PM. |
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08-16-2022, 08:52 PM
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#5 | |
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Registered User
Join Date: Jul 2014
Location: North-central Virginia
Posts: 1,099
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Re: 1985 auto to 5 speed
Quote:
Do you have any cross-over pipe at all in the exhaust? Or is it true-duals all the way out the back? I assume you used the np208 t-case? Were there any conflicts between the trans and t-case shifters?
__________________
1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome! |
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08-16-2022, 09:14 PM
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#6 |
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Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,524
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Re: 1985 auto to 5 speed
Kipps,
Vortec 350 True duals ( for now). Just received my Hooker cast iron manifolds, so the exhaust is going to change. Both the stock 208 and late model 205 bolt in without issue. I used an ORD, floor mount twin stick for the 205. |
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08-17-2022, 12:34 AM
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#7 | |
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Registered User
Join Date: Dec 2011
Location: Massachusetts
Posts: 238
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Re: 1985 auto to 5 speed
Quote:
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08-17-2022, 09:57 AM
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#8 |
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Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,524
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Re: 1985 auto to 5 speed
These.
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08-17-2022, 07:26 PM
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#9 | |
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Registered User
Join Date: Dec 2011
Location: Massachusetts
Posts: 238
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Re: 1985 auto to 5 speed
Quote:
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