Question, S-10 t-5 transmission swap ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gulfcoast66 · 08-28-2007, 03:15 PM

My first question is, can a t-5 transmission mount to a 350 engine without alot of fab. work. It is a S-10 unit. Next can they hold up behind a 350 ive heard that they are not the strongest 5 speed in the world, has anyone done this before? Im not planing to race my truck, just better highway running. any info would be great.

sanford66 · 08-28-2007, 05:57 PM

Would work fine behind a stock or mild 350. If you buy a used one inspect it carefully, try to find a heavy duty one with the hardend counter shaft, and heavy duty synchro. rings. Good luck. Joe

rickf · 08-29-2007, 04:35 AM

How does one tell if it is heavy duty or not?

slorio · 08-29-2007, 08:55 AM

The heavy duty transmissions are called world class. They were not used in S-10's. The world class transmissions were used in Camaros and Firebirds with V-8's from the factory. The only problem with the Camaro and Firebird T-5's was that the shifter was on the back of the tail shaft. For a truck this puts the shifter under the bench seat unless you use buckets. The slick way to do this is to use an S-10 transmission tail shaft on a Firebird/Camaro world class transmission. The S-10 transmission tail shaft is a bolt on that moves the shifter much further forward to where you would want it for a truck with a bench seat. The second thing that you would want to look for is a T-5 with a manual speedo drive. After 1987(?) they went to an electronic speedo in the trucks. With the electronic speedo, you would need a converter (approx. $300) to drive your mechanical speedo. The following website has extensive discussion of this swap:

inliners.org

Regards,
Steve Lorio

P.S. I haven't done this swap, but have read a lot about it from the website I referred you to.

gulfcoast66 · 08-29-2007, 05:04 PM

thanks for the info. the pre 87's are hard to find here, the one i had in mind is a 1991, a stupid question what is the speedo????

slorio · 08-30-2007, 01:23 PM

Speedometer.
regards,
Steve

neto · 08-30-2007, 01:59 PM

Hey Steve this is not a question about a transmission but about the rear end. I've heard that the S10 rear end will fit right in on a 63. Just wondering if you have heard of this before? Thanks
Ernest

slorio · 08-31-2007, 09:48 AM

Sorry, I don't have any info on S 10 rear ends. I would think you could find something in the archives through a search either here or on the website that I referred you to.
Regards,
Steve

08-28-2007, 03:15 PM	#1
gulfcoast66 64-66 CHEVY JUNKIE Join Date: Apr 2007 Location: Cypress ,Texas Posts: 1,516	Question, S-10 t-5 transmission swap ? My first question is, can a t-5 transmission mount to a 350 engine without alot of fab. work. It is a S-10 unit. Next can they hold up behind a 350 ive heard that they are not the strongest 5 speed in the world, has anyone done this before? Im not planing to race my truck, just better highway running. any info would be great. __________________ 1966 C-10 Fleetside LWB, 350 Lt1 4l60-E 2008 Silverado Crew Cab, 4.8 4l60-E 1998 GMC Yukon 4x4 L-31 Vortec, 4l60-E 2017 GMC Serra 4x4 5.3 Vortec, 4l60-E Do It In A Chevrolet

08-28-2007, 05:57 PM	#2
sanford66 Registered User Join Date: Jun 2007 Location: Everest Ks Posts: 749	Re: Question, S-10 t-5 transmission swap ? Would work fine behind a stock or mild 350. If you buy a used one inspect it carefully, try to find a heavy duty one with the hardend counter shaft, and heavy duty synchro. rings. Good luck. Joe

08-29-2007, 04:35 AM	#3
rickf Registered User Join Date: Dec 2005 Location: Lake Oswego, OR Posts: 318	Re: Question, S-10 t-5 transmission swap ? How does one tell if it is heavy duty or not?

08-29-2007, 08:55 AM	#4
slorio Registered User Join Date: Sep 2006 Location: Louisiana Posts: 374	Re: Question, S-10 t-5 transmission swap ? The heavy duty transmissions are called world class. They were not used in S-10's. The world class transmissions were used in Camaros and Firebirds with V-8's from the factory. The only problem with the Camaro and Firebird T-5's was that the shifter was on the back of the tail shaft. For a truck this puts the shifter under the bench seat unless you use buckets. The slick way to do this is to use an S-10 transmission tail shaft on a Firebird/Camaro world class transmission. The S-10 transmission tail shaft is a bolt on that moves the shifter much further forward to where you would want it for a truck with a bench seat. The second thing that you would want to look for is a T-5 with a manual speedo drive. After 1987(?) they went to an electronic speedo in the trucks. With the electronic speedo, you would need a converter (approx. $300) to drive your mechanical speedo. The following website has extensive discussion of this swap: inliners.org Regards, Steve Lorio P.S. I haven't done this swap, but have read a lot about it from the website I referred you to.

08-29-2007, 05:04 PM	#5
gulfcoast66 64-66 CHEVY JUNKIE Join Date: Apr 2007 Location: Cypress ,Texas Posts: 1,516	Re: Question, S-10 t-5 transmission swap ? thanks for the info. the pre 87's are hard to find here, the one i had in mind is a 1991, a stupid question what is the speedo???? __________________ 1966 C-10 Fleetside LWB, 350 Lt1 4l60-E 2008 Silverado Crew Cab, 4.8 4l60-E 1998 GMC Yukon 4x4 L-31 Vortec, 4l60-E 2017 GMC Serra 4x4 5.3 Vortec, 4l60-E Do It In A Chevrolet

08-30-2007, 01:23 PM	#6
slorio Registered User Join Date: Sep 2006 Location: Louisiana Posts: 374	Re: Question, S-10 t-5 transmission swap ? Speedometer. regards, Steve

08-30-2007, 01:59 PM	#7
neto Registered User Join Date: Jan 2007 Location: Madera, California Posts: 291	Re: Question, S-10 t-5 transmission swap ? Hey Steve this is not a question about a transmission but about the rear end. I've heard that the S10 rear end will fit right in on a 63. Just wondering if you have heard of this before? Thanks Ernest

08-31-2007, 09:48 AM	#8
slorio Registered User Join Date: Sep 2006 Location: Louisiana Posts: 374	Re: Question, S-10 t-5 transmission swap ? Sorry, I don't have any info on S 10 rear ends. I would think you could find something in the archives through a search either here or on the website that I referred you to. Regards, Steve

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