Installing a 5 speed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chuck1960 · 02-19-2006, 10:26 PM

Hello everyone, I'm looking for pros & cons on installing a 91 1/2 ton 5 speed into my 67 1/2 ton. I'm putting a 400smblk with dart pro 1 heads and a few perf. parts in the truck and don't really know how much abuse the trans. might take. It's a nv3500 and don't know it's torque rating. I know everything will bolt in and I'll need a 400 flywheel but was unsure about cutting a hole in the floor (new carpet) and the trans not holding up. Any info would be appreciated

**Palf70Step** · 02-19-2006, 10:53 PM

You might PM Huck. He has a 5 speed in one of his trucks. He should be able to let you know what problesm and all there is with the swap.

Longhorn Man · 02-19-2006, 11:06 PM

Does the NV3500 have an integral bellhousing? If so, you'll have to fab up a hyd master cylinder and all that jazz. Huck did his that way, and it worked good. his clutch pedal felt a little funny, but only took 2 or 3 shifts to get it down and be able to drive with out looking like an idiot.
He had a stock crate (260 horse?) 350 in his, but he did do some seriouse hauling too though.

Huck · 02-20-2006, 10:13 AM

My converstion was with an aluminum based 5speed out of a 96 truck. Don't know the model but it held up well for all applications I had. Only drawback with the hyd clutch was not as soft a pedal as it should have been and the newer transmissions are not setup for gear driven speedo cables. You can get a Richmond 5 speed that will do whatever you want to do with it but it is a pricy solution. My cost me about $1,000. to do total and I enjoyed it totally.

chuck1960 · 02-21-2006, 01:29 AM

I have everything for the install except figuring out how to make the speedometer work. I'm replacing the bearings now and decided to replace the syncronizers . I have a 700r4 and a 350 turbo, guess it would be easier to use one of them. Just bought a 68 and could use the 5 spd. with my tpi engine in it one of these days. Thanks for info.

chevybill · 02-21-2006, 11:33 AM

chuck1960, you have a pm

thanks,
chevybill

454_72_4X4 · 02-21-2006, 02:21 PM

It'll never live behind that 400 unless you're really really nice to it.
I've had 2 in my S-10, and now I'm back to a 700r4...

BTW, I have the complete setup I just took out of my S-10. If you need any parts LMK. Trans has a broken shift fork or somthin.

chuck1960 · 02-21-2006, 10:59 PM

I was planing on some street and strip use and was'nt sure about the torque rating, sooo I guess I'll just stick with a turbo350. Was just thinking I would have an adjustable stall with the 5 speed. I found out it's a lot easier to build a 350th than it has been to rebuild this particular straight shift and it will probably stand more abuse to. At least the ones I've run in the past have.

454_72_4X4 · 02-21-2006, 11:34 PM

Mine made about a dozen passes down an 1/8th mile track in my severely traction limited S-10. (Non posi 3.08 daily driver.)
Best MPH 76.07
Best ET 9.941

Last pass (1st gear only and coasted the rest of the way)
MPH 31.17!
ET 16.792!

02-19-2006, 10:26 PM	#1
chuck1960 Junior Member Join Date: Oct 2005 Location: cleveland, tn. Posts: 71	Installing a 5 speed Hello everyone, I'm looking for pros & cons on installing a 91 1/2 ton 5 speed into my 67 1/2 ton. I'm putting a 400smblk with dart pro 1 heads and a few perf. parts in the truck and don't really know how much abuse the trans. might take. It's a nv3500 and don't know it's torque rating. I know everything will bolt in and I'll need a 400 flywheel but was unsure about cutting a hole in the floor (new carpet) and the trans not holding up. Any info would be appreciated

02-19-2006, 10:53 PM	#2
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 46,820	Re: Installing a 5 speed You might PM Huck. He has a 5 speed in one of his trucks. He should be able to let you know what problesm and all there is with the swap. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

02-19-2006, 11:06 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Installing a 5 speed Does the NV3500 have an integral bellhousing? If so, you'll have to fab up a hyd master cylinder and all that jazz. Huck did his that way, and it worked good. his clutch pedal felt a little funny, but only took 2 or 3 shifts to get it down and be able to drive with out looking like an idiot. He had a stock crate (260 horse?) 350 in his, but he did do some seriouse hauling too though.

02-20-2006, 10:13 AM	#4
Huck Senior Member Join Date: Jun 2001 Location: Shelbyville, KY Posts: 3,269	Re: Installing a 5 speed My converstion was with an aluminum based 5speed out of a 96 truck. Don't know the model but it held up well for all applications I had. Only drawback with the hyd clutch was not as soft a pedal as it should have been and the newer transmissions are not setup for gear driven speedo cables. You can get a Richmond 5 speed that will do whatever you want to do with it but it is a pricy solution. My cost me about $1,000. to do total and I enjoyed it totally.

02-21-2006, 01:29 AM	#5
chuck1960 Junior Member Join Date: Oct 2005 Location: cleveland, tn. Posts: 71	Re: Installing a 5 speed I have everything for the install except figuring out how to make the speedometer work. I'm replacing the bearings now and decided to replace the syncronizers . I have a 700r4 and a 350 turbo, guess it would be easier to use one of them. Just bought a 68 and could use the 5 spd. with my tpi engine in it one of these days. Thanks for info.

02-21-2006, 11:33 AM	#6
chevybill Senior Member Join Date: Oct 2004 Location: calhoun city ms Posts: 940	Re: Installing a 5 speed chuck1960, you have a pm thanks, chevybill __________________ ongoing 1970 c 10 lwb 1994 z-28 few mods.-owned since new 1978 vette silver/grey 25th anniv. paint

02-21-2006, 02:21 PM	#7
454_72_4X4 Registered User Join Date: Apr 2004 Location: N.E. MO Posts: 1,749	Re: Installing a 5 speed It'll never live behind that 400 unless you're really really nice to it. I've had 2 in my S-10, and now I'm back to a 700r4... BTW, I have the complete setup I just took out of my S-10. If you need any parts LMK. Trans has a broken shift fork or somthin. __________________ 72 C20 4X4 454 4 speed 89 Trans Am (was) 305 TPI 700r4 93 C1500 2wd Extended cab 350 700r4 98 Sonoma (TPI outa the Trans Am) 03 Yamaha 660 Raptor 03/04 660 Raptor 07 700 Raptor 85 Honda Odyssey

02-21-2006, 10:59 PM	#8
chuck1960 Junior Member Join Date: Oct 2005 Location: cleveland, tn. Posts: 71	Re: Installing a 5 speed I was planing on some street and strip use and was'nt sure about the torque rating, sooo I guess I'll just stick with a turbo350. Was just thinking I would have an adjustable stall with the 5 speed. I found out it's a lot easier to build a 350th than it has been to rebuild this particular straight shift and it will probably stand more abuse to. At least the ones I've run in the past have. Last edited by chuck1960; 02-21-2006 at 11:00 PM.

02-21-2006, 11:34 PM	#9
454_72_4X4 Registered User Join Date: Apr 2004 Location: N.E. MO Posts: 1,749	Re: Installing a 5 speed Mine made about a dozen passes down an 1/8th mile track in my severely traction limited S-10. (Non posi 3.08 daily driver.) Best MPH 76.07 Best ET 9.941 Last pass (1st gear only and coasted the rest of the way) MPH 31.17! ET 16.792! __________________ 72 C20 4X4 454 4 speed 89 Trans Am (was) 305 TPI 700r4 93 C1500 2wd Extended cab 350 700r4 98 Sonoma (TPI outa the Trans Am) 03 Yamaha 660 Raptor 03/04 660 Raptor 07 700 Raptor 85 Honda Odyssey



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