The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - anyone put a later 5 speed in a 81-87?

odee · 07-06-2008, 07:24 AM

yes, I've had a nv4500 in my 80 model dually that I tow my jeep and dragcar with. We put the tranny in behind my old 350 that was in this truck and my other dually. Put the bellhousing on bolted tranny up used jacks and stands to support everything. Then put the tranny mount on bolted crossmember up and drilled two new mounting holes. Cut and balanced front half of driveline at a buddies shop. The speedo was replaced with a electric version I found at the junkyard out of a 90-91 suburban. I found a wiring book on ebay for the 90-91 model gm trucks and subs. Found wiring info for the speedo and made it up. Fixed a adjustable drac module that drives the speedo head from pulses from tranny. My biggest problem has been with the hydro clutch. The thing seems to want to eat slaves and masters. But I can say that it has helped the truck out alot. I wish I would have done the swap years ago. Maybe by now I would have the clutch issues fixed.

07-06-2008, 07:24 AM	#5
odee Registered User Join Date: Nov 2004 Location: big stone gap va Posts: 83	Re: anyone put a later 5 speed in a 81-87? yes, I've had a nv4500 in my 80 model dually that I tow my jeep and dragcar with. We put the tranny in behind my old 350 that was in this truck and my other dually. Put the bellhousing on bolted tranny up used jacks and stands to support everything. Then put the tranny mount on bolted crossmember up and drilled two new mounting holes. Cut and balanced front half of driveline at a buddies shop. The speedo was replaced with a electric version I found at the junkyard out of a 90-91 suburban. I found a wiring book on ebay for the 90-91 model gm trucks and subs. Found wiring info for the speedo and made it up. Fixed a adjustable drac module that drives the speedo head from pulses from tranny. My biggest problem has been with the hydro clutch. The thing seems to want to eat slaves and masters. But I can say that it has helped the truck out alot. I wish I would have done the swap years ago. Maybe by now I would have the clutch issues fixed.