Can't catch a break! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1963chevyc20 · 12-04-2015, 03:13 PM

Okay so 3 years ago all my wiring under the hood melted and my sagnaw 3 speed went out
Well 3 weeks ago I got it back on the road with a fresh rebuilt transmission. Well today I was in 2nd gear and it started to shimmy HARD. I stoped at a stop sign, took off in first and about 3 feet I hear a real loud clang,clang,clang. That's all she wrote. Tranny main gear is busted. What 4 speed can I put back in it without changeing my bell hauseng. And my drive shaft has that round peace that slides in the tranny. Who do I change that. Thank you everyone

**TJ's Chevy** · 12-04-2015, 03:27 PM

Boy if you were in my town I'd have you stop by and we'd throw in a SM420. I have all the parts need(I think). lol Tranny is 50 years old but shifted nicely. Course its been over 1 year now sitting. Hope ya get it fixed soon!

jonzcustomshop · 12-04-2015, 05:32 PM

any 60-66 truck 4 speed will bolt up, the 4 speed driveshaft is longer in between the trans and carrier bearing than the 3 speed. depending on what you currently have you will need to source the driveshaft out of the donor truck as well, you also might need a high hump (with the firewall section) and high hump floor mat.

divideoverflow · 12-04-2015, 06:03 PM

If it was a fresh built transmission would it be under warranty? Do you know why it failed?

frankslagoon · 12-04-2015, 06:17 PM

We get mixed up on these 3 speeds,but if you have a Saginaw sycroed 1st gear ,which is not what came in the trk you can hang a Saginaw 4 speed in it's place. If you have a Muncie 3 sp. non sycroed 1st gear you can put a car 4 speed in also but the drive line will probably have to be shortened

**1971 GMC SHORTY** · 12-05-2015, 12:16 AM

I have a 1964 3 Speed you can have Free just pay shipping

1963chevyc20 · 12-05-2015, 12:18 AM

Thanks for the offer tj's chevy! And they said the tranny MIGHT be under warranty. They took 2 used ones I could come up with and made one work. He said if it's due to workmanship it's on them if it's a gear I'm SOL.

1963chevyc20 · 12-09-2015, 11:19 PM

Okay! Found the break I've long needed! It's the u joints!!! Not the tranny. Shell be back on the road by Sunday. Thanks everyone! As far as the 64 3 speed I'd like to have it if it's a long tail and it works. Just get me a quote please. Durant ok 74702.

fairshuru · 12-10-2015, 01:00 AM

If you have a Saginaw sycroed 1st gear ,which is not what came in the trk you can hang a Saginaw 4 speed in it's place. If you have a Muncie 3 sp. non sycroed 1st gear you can put a car 4 speed in also but the drive line will probably have to be shortened.???

1963chevyc20 · 12-10-2015, 08:16 AM

My transmission is ssa non synchro.

63burban · 12-10-2015, 12:34 PM

Make sure you have the U joints seated in the yokes, install all new joints, cheap insurance you have eliminated a possible break down in the future.

12-04-2015, 03:13 PM	#1
1963chevyc20 Registered User Join Date: Feb 2014 Location: durant oklahoma Posts: 277	Can't catch a break! Okay so 3 years ago all my wiring under the hood melted and my sagnaw 3 speed went out Well 3 weeks ago I got it back on the road with a fresh rebuilt transmission. Well today I was in 2nd gear and it started to shimmy HARD. I stoped at a stop sign, took off in first and about 3 feet I hear a real loud clang,clang,clang. That's all she wrote. Tranny main gear is busted. What 4 speed can I put back in it without changeing my bell hauseng. And my drive shaft has that round peace that slides in the tranny. Who do I change that. Thank you everyone

12-04-2015, 03:27 PM	#2
TJ's Chevy Post Whore Join Date: Mar 2013 Location: Southern Oregon Posts: 10,384	Re: Can't catch a break! Boy if you were in my town I'd have you stop by and we'd throw in a SM420. I have all the parts need(I think). lol Tranny is 50 years old but shifted nicely. Course its been over 1 year now sitting. Hope ya get it fixed soon! __________________ 1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw

12-04-2015, 05:32 PM	#3
jonzcustomshop 1961 crewcab Join Date: Dec 2007 Location: missoula, mt Posts: 6,164	Re: Can't catch a break! any 60-66 truck 4 speed will bolt up, the 4 speed driveshaft is longer in between the trans and carrier bearing than the 3 speed. depending on what you currently have you will need to source the driveshaft out of the donor truck as well, you also might need a high hump (with the firewall section) and high hump floor mat. __________________ 60 build: http://67-72chevytrucks.com/vboard/s...d.php?t=280904 61 crew build: http://67-72chevytrucks.com/vboard/s...d.php?t=646830 63 build: http://67-72chevytrucks.com/vboard/s...d.php?t=336537 64 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=448681 65 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=590715 65 build: http://67-72chevytrucks.com/vboard/s...d.php?t=281955

12-04-2015, 06:03 PM	#4
divideoverflow Registered User Join Date: Nov 2015 Location: Raleigh, NC Posts: 59	Re: Can't catch a break! If it was a fresh built transmission would it be under warranty? Do you know why it failed? __________________ 1965 C30 Dually, 230ci/SM420 4SPD/MS/MDB

12-04-2015, 06:17 PM	#5
frankslagoon Registered User Join Date: Jan 2014 Location: Wasilla Alaska Posts: 537	Re: Can't catch a break! We get mixed up on these 3 speeds,but if you have a Saginaw sycroed 1st gear ,which is not what came in the trk you can hang a Saginaw 4 speed in it's place. If you have a Muncie 3 sp. non sycroed 1st gear you can put a car 4 speed in also but the drive line will probably have to be shortened

12-05-2015, 12:16 AM	#6
1971 GMC SHORTY Senior Member Join Date: Apr 2009 Location: SAN FERNANDO VALLE SOL CAL Posts: 1,064	Re: Can't catch a break! I have a 1964 3 Speed you can have Free just pay shipping __________________ 1966 GMC K25 V6 351E Original Utility Truck 2000 C3500 Hot Rod Utility Truck 2003 ROAD KING 100th 124ci 6 Speed 145CI M/P Pro Street FXR 2002 FXDP 2007 2500HD DURAMAX. DD Studio Teamsters / Mechanic Retired GM Master Tech 20 Years Retired Ford Tech 15 Years

12-05-2015, 12:18 AM	#7
1963chevyc20 Registered User Join Date: Feb 2014 Location: durant oklahoma Posts: 277	Re: Can't catch a break! Thanks for the offer tj's chevy! And they said the tranny MIGHT be under warranty. They took 2 used ones I could come up with and made one work. He said if it's due to workmanship it's on them if it's a gear I'm SOL.

12-09-2015, 11:19 PM	#8
1963chevyc20 Registered User Join Date: Feb 2014 Location: durant oklahoma Posts: 277	Re: Can't catch a break! Okay! Found the break I've long needed! It's the u joints!!! Not the tranny. Shell be back on the road by Sunday. Thanks everyone! As far as the 64 3 speed I'd like to have it if it's a long tail and it works. Just get me a quote please. Durant ok 74702.

12-10-2015, 01:00 AM	#9
fairshuru Registered User Join Date: Dec 2015 Location: Pakistan Posts: 1	Re: Can't catch a break! If you have a Saginaw sycroed 1st gear ,which is not what came in the trk you can hang a Saginaw 4 speed in it's place. If you have a Muncie 3 sp. non sycroed 1st gear you can put a car 4 speed in also but the drive line will probably have to be shortened.??? __________________ Solitaire

12-10-2015, 08:16 AM	#10
1963chevyc20 Registered User Join Date: Feb 2014 Location: durant oklahoma Posts: 277	Re: Can't catch a break! My transmission is ssa non synchro.

12-10-2015, 12:34 PM	#11
63burban Chevy addict Join Date: May 2012 Location: Iron Ridge, WI Posts: 1,085	Re: Can't catch a break! Make sure you have the U joints seated in the yokes, install all new joints, cheap insurance you have eliminated a possible break down in the future.



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