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07-14-2014, 05:33 PM
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#1 |
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Registered User
 Join Date: Apr 2011
Location: Ft. Worth, Tx
Posts: 536
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Identify trans
Howdy all, can anyone tell me what trans I have?
Thanks |
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07-14-2014, 05:39 PM
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#2 |
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Registered User
Join Date: Feb 2014
Location: rochester ny
Posts: 55
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Re: Identify trans
here you go
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07-14-2014, 05:43 PM
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#3 |
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Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,549
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Re: Identify trans
Looks to be a th350. May be the lock-up converter style though. Those wires coming from the side may be for the lock-up.
__________________
70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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07-14-2014, 05:50 PM
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#4 |
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Registered User
Join Date: Apr 2011
Location: Ft. Worth, Tx
Posts: 536
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Re: Identify trans
Thanks flynn and jjzepplin. The wires coming out of the left side had me wondering.
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07-14-2014, 05:56 PM
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#5 |
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Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,549
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Re: Identify trans
Not sure how the th350 lock-up works but my 700r4 has an "o" ring on the tip of the input shaft. If that "o" ring goes bad it won't work right.
Maybe check to see if yours has one.
__________________
70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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07-14-2014, 05:58 PM
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#6 |
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Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Identify trans
That's a TH350C transmission. Also known as a lock up Turbo 350. Early 80s vintage.
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I'm on the Instagram- @Gearhead_Kevin |
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07-15-2014, 07:33 PM
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#7 |
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Registered User
Join Date: Apr 2011
Location: Ft. Worth, Tx
Posts: 536
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Re: Identify trans
Is this a desirable trans with the lockup? Or, should I have it disabled?
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07-15-2014, 10:33 PM
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#8 |
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Registered User
Join Date: Oct 2012
Location: Philly, PA
Posts: 537
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Re: Identify trans
I'm not a transmission expert, that said, it has the electronic component for the lock up, but the shaft appears to be from a non-lock up TH350. I'm sure someone here can shed some light on this.
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My truck ain't dead, it just smells funny. |
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07-15-2014, 10:37 PM
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#9 | |
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Registered User
Join Date: Nov 2013
Location: Green Bay, WI
Posts: 435
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Re: Identify trans
Quote:
I didn't see any pictures of the input shaft? Only shaft I can see is the output which would be the same
__________________
1966 C10 SWB Fleet 5.3L LM7 Vortec / 4L60e Swap 1966 C10 w/ 5.3L/4L60e Build Thread 2012 GMC Sierra 5.3L 4x4 CCSB |
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07-15-2014, 10:44 PM
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#10 | |
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Watch out for your cornhole !
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Identify trans
Quote:
__________________
I'm on the Instagram- @Gearhead_Kevin |
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07-15-2014, 10:56 PM
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#11 |
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Registered User
Join Date: Nov 2013
Location: Green Bay, WI
Posts: 435
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Re: Identify trans
My (5.3L LM7) 4L60e input shaft on my 1966 C10
It'll (input shaft o-ring) look similar to this once you remove the torque converter.  Here is a better TH350 Lockup input shaft 
__________________
1966 C10 SWB Fleet 5.3L LM7 Vortec / 4L60e Swap 1966 C10 w/ 5.3L/4L60e Build Thread 2012 GMC Sierra 5.3L 4x4 CCSB |
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07-15-2014, 11:27 PM
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#12 |
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Registered User
Join Date: Feb 2014
Location: rochester ny
Posts: 55
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Re: Identify trans
if you search for th350c in the faq quite a few threads come up on how to rig it up and just leaving the wires unhooked
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07-17-2014, 08:47 PM
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#13 | |
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Registered User
Join Date: Apr 2011
Location: Ft. Worth, Tx
Posts: 536
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Re: Identify trans
Quote:
Just looked at the trans...it is like the bottom pic...must be a lockup trans. |
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07-18-2014, 07:40 AM
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#14 |
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Registered User
Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,549
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Re: Identify trans
I've never had one but I suppose it would lower your final rpm by about 200 or so like the 700r4 when you engage the lockup. Are these trannies weaker than the regular 350?
I think it would be cool to have the strength of the 350 and the lock of the 700.
__________________
70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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08-05-2014, 07:22 PM
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#15 | |
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Registered User
Join Date: Apr 2011
Location: Ft. Worth, Tx
Posts: 536
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Re: Identify trans
Quote:
Well...took this trans to a shop to be rebuilt. As it turns out, it's not a 350 but, a 250...never heard of a th250. The trans guy pointed to a spot just to the left of the cooler line fittings and, above the hole for the dipstick. Said it was an external adjuster for one of the bands. Also said the biggest motor that should be in front of it was a 6 cylinder...so much for that...LOL Now I've decided to try and find a TH400 to have built for my truck. Seems there's always something in the way of getting my truck running. Oh well, live and learn...LOL |
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