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Old 02-28-2013, 04:11 PM   #1
78 Bonanza
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Join Date: Jan 2013
Location: Alamosa, CO
Posts: 19
Need help NV4500 to 454

For anyone out there who has switched their old square body over to an NV4500. I currently am attempting to drop my old TH400 out of my dually and put in a 96 NV4500. I have the trans, bellhousing, hydro clutch pedal, the slave cylider and master cylinder. The guy I bought the trans from didn't know how to unhook the lines so those are cut and ruined. The truck is 2x with a 454 and has the brake booster/power steering setup. I have done conversions on small block Blazers with the AA adapters with the old Z-bar clutch systems. So this hydraulic clutch is new to me. Any help with hooking this thing up would be greatly appreciated. A line for parts would also be helpful. Thanks to anyone with experience with this.
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Old 02-28-2013, 05:06 PM   #2
83GMCK2500
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Join Date: Sep 2009
Location: Beaverton, OR from WA State
Posts: 1,515
Re: Need help NV4500 to 454

Quote:
Originally Posted by 78 Bonanza View Post
For anyone out there who has switched their old square body over to an NV4500. I currently am attempting to drop my old TH400 out of my dually and put in a 96 NV4500. I have the trans, bellhousing, hydro clutch pedal, the slave cylider and master cylinder. The guy I bought the trans from didn't know how to unhook the lines so those are cut and ruined. The truck is 2x with a 454 and has the brake booster/power steering setup. I have done conversions on small block Blazers with the AA adapters with the old Z-bar clutch systems. So this hydraulic clutch is new to me. Any help with hooking this thing up would be greatly appreciated. A line for parts would also be helpful. Thanks to anyone with experience with this.
Hydro clutch was offered in squares in...84 or 85 and newer, going to need a pedal assembly and to drill some holes in firewall to mount clutch master cylinder. I am not familiar with the internal slave style NV4500, but IIRC there is a tool to disconnect the lines.

I have a '93 MY NV4500 for my '83 and I've collected some info on the swap. One of our other members, DirtyLarry, did a similar swap: his thread.
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1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt
1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050
1997 GMC Sierra SLT 1500 4x4, Z71/F44, EC/SB, Vortec 350

My Introduction with my '83s History
New Daily, the '96
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