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Re: T-5 in my 3600
SavannahDog #1226279 Wed Jul 19 2017 07:50 PM
Joined: Sep 2011
Posts: 1,961
L
Shop Shark
Yes, it is possible to change the 5th gear from 0.86 to 0.72. Don't be fooled into thinking that a 0.63 gear set or 0.72 gear set from a V8 Camaro with be the same ratio if swapped in to an S10 T5. The numbers all change because the gear teeth numbers are different. Also, you can't buy just any S10 5th gear set. Some won't work because of the tooling on the main shaft. I experienced this once when I promised my customer that I'd swap a 0.72 gear set for his 0.76. I found out that I couldn't do it because the snap ring location wasn't at the right place. He's happy with the 0.76 but would have been even happier with the 0.72. Nothing I could do about it though.

I have these websites saved as favorites on my computer. Very helpful.

RPM Calculator

Driven Gear Calculator and Tire Diameter Calculator - Both on Same Page - Skip the top paragraph section and just use the Speedometer Gear Calculator in the second paragraph and the Tire Diameter Calculator right below that.

I will also reference my own web pages for the following:

T5 Identification - What the tags and markings mean.

T5 Buyers pre-purchase checklist.

T5 input shaft swap - skip the adapter plate.


Last edited by Lugnutz; Fri Jul 21 2017 06:40 PM.
Re: T-5 in my 3600
SavannahDog #1226312 Thu Jul 20 2017 01:09 AM
Joined: Dec 2014
Posts: 375
S
Shop Shark
Lugnuts, How bought sense You live so close to me. And I haven't a Clue about these transmissions. And it sounds like you've done this before. That I ask you to help me with mine. After I get the transmission I'll private message you about bringing it over.


Julian Carter

1970 Triumph GT6
1967 Triumph TR4A
1952 Chevy 3600
1948 MG-TC
Re: T-5 in my 3600
SavannahDog #1226314 Thu Jul 20 2017 01:16 AM
Joined: Sep 2011
Posts: 1,961
L
Shop Shark
I'd be more than happy to help. No strings attached.

Re: T-5 in my 3600
SavannahDog #1226354 Thu Jul 20 2017 04:47 AM
Joined: Oct 2016
Posts: 685
N
Shop Shark
Originally Posted by Savannah54
Dave I tried the "Gear mph calculator." It describes using a 4.1 rear 33 " tires .86 gear as an engine speed of 2334. That's not bad.


I had no idea that you had 33" tall tires. I don't think I've ever seen a 3600 with tires that tall. I'm surprised that you even need an overdrive gear!


Dave

Clutch head screws have stolen too many hours from my life....

1950 Chevy 3600 (resto-something) - the work resumes...
https://goo.gl/photos/8t5mLuj4JZebvGq49

1963 GMC Widebed Custom

1951(?) GMC flatbed that is now a flower garden:
https://goo.gl/photos/H79pvKhHLxjNiR149

1968 Chevy II Nova- not running, waiting for me to finish the '50 3600
https://goo.gl/photos/Dh7q4pt3WSkKjjFr9
Re: T-5 in my 3600
SavannahDog #1226391 Thu Jul 20 2017 03:06 PM
Joined: Dec 2014
Posts: 375
S
Shop Shark
Dave, You're right my tires are 30" high so with that calculated at 65 MPH my engine is turning 2567. BTW tires also hold 80psi. That wakes them an explosion waiting to happen.


Julian Carter

1970 Triumph GT6
1967 Triumph TR4A
1952 Chevy 3600
1948 MG-TC
Re: T-5 in my 3600
SavannahDog #1226624 Sat Jul 22 2017 01:51 PM
Joined: Sep 2013
Posts: 1,020
M
Shop Shark
[quote=Savannah54]Dave, You're right my tires are 30" high so with that calculated at 65 MPH my engine is turning 2567. BTW tires also hold 80psi. That wakes them an explosion waiting to happen. [/quote

Actually E rated (10 ply rated) tires are rated at 80lbs for the maximum rated load. The wife's horse trailer pulling 2015, 3/4 ton and my backhoe pulling 1 ton normally run 80 lb. The 51 3600 with e rated tires I usually run about 45 in the front and about 35 in the rear since it doesn't carry the rated load, works fine.


1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1951 Farmall Super A



Re: T-5 in my 3600
SavannahDog #1226666 Sat Jul 22 2017 07:46 PM
Joined: Dec 2014
Posts: 375
S
Shop Shark
Thanks Moparguy, Maximum 80psi, wonder what I could run them on a empty truck. Driving along the Interstate Hwy. A tractor trailer tire exploded. Now I'm going the other way and the shock wave/noise hit me and it was loud.Tractor never slowed down. I now pass trailers with a lot more respect.


Julian Carter

1970 Triumph GT6
1967 Triumph TR4A
1952 Chevy 3600
1948 MG-TC
Re: T-5 in my 3600
SavannahDog #1228512 Sat Aug 05 2017 02:57 AM
Joined: Dec 2014
Posts: 375
S
Shop Shark
"Only the V8 Camaro/Firebird T5s have the 0.63 overdrive. They also have a 2.95 first gear.
So your 4.10 rear combined with either a 3.75 or 4.03 first gear (found in T5s from V6 Camaros and S10 trucks) will make first gear seem like a granny gear. 4.10 X 3.75 = 15.375. Worse if the first gear is 4.03.
I will let you do the math for the V8 Camaro T5. It has 2.95 for 1st gear and 0.63 for 5th and is a close ratio tranny. Except the drop from 4th gear to 5th is a HUGE 37%."


So if I find a camero/firebird with a gear going from 3.35 to .68 NWC an I take it apart and install it in my S-10 case


Julian Carter

1970 Triumph GT6
1967 Triumph TR4A
1952 Chevy 3600
1948 MG-TC
Re: T-5 in my 3600
SavannahDog #1228518 Sat Aug 05 2017 03:18 AM
Joined: Sep 2011
Posts: 1,961
L
Shop Shark
Originally Posted by Savannah54
So if I find a camero/firebird with a gear going from 3.35 to .68 NWC an I take it apart and install it in my S-10 case


I think what would work best would be to swap the S10 tail housing ONTO the Camaro case.
The gear set you mention sounds more like they are from a Mustang T5.

The answer to your question is this - World Class gears must go inside a World Class case. Non-world class need to go in a non-world class case.

The S10 T5 is World Class starting in 1993. However, 1993 is the only year that the S10 has both a World Class case and a Muncie pattern where it bolts to the bell. 1994 and up are also world class but have a Ford pattern case.

The Camaro T5 is World Class from 1988 - 1992. 1993 and up Camaro T5s are also world class but have a FORD pattern case.

Find a nice Camaro or S10 T5 with gears you like and with a Muncie case. If it's a Camaro T5, just swap the tail housing to S10.

Last edited by Lugnutz; Sat Aug 05 2017 03:20 AM.
Re: T-5 in my 3600
SavannahDog #1350044 Sun Mar 15 2020 03:35 AM
Joined: Feb 2020
Posts: 18
W
New Guy
I have a 1954 Chevy 3600 that I am trying to get an S-10 T5 tranny hooked up to. I don't know it there was a big difference between the 3100 and the 3600, but it seems by measuring that I will need to lengthen the splines by about an inch. I bought a spacer from Davis Speed Equipment (thin) that is supposed to eliminate binding of the friction disc, but don't see how when the splines appear to be needing ground back an inch or so more.
According to their instructions for use of the plate, "Slide the friction disc all the way on the S10 input shaft and measure from the face of the friction disc to the face of the transmission.
(4 5/8", measurement A.)
Then measure from the bell housing mounted to the engine to the fly wheel. ( 5 3/4", measurement B.)
If measurement A is less than measurement B your good to go, if not grind the splines longer."

Am I missing something or are the descriptions of those dimensions transposed? Seems like B should be shorter than A in order to have as much clearance as the original bearing retainer had. I have not shortened anything yet.

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