Annoying Snag in Tranny Installation - The 1947 - Present Chevrolet & GMC Truck Message Board Network

palposity · 10-23-2010, 12:55 PM

I have an 86 K20 I'm putting together and for some reason when I attempt to install the TH400 on the back of my 350 engine the tranny comes within a quarter inch of making contact with the engine block and just stops. What gives? I checked and cleaned the dowel holes, tried turning the engine just a hair, but I can't get the stupid tranny on!

There doesn't appear to be a guide pin on the end of the tranny shaft. Can you guys think of something I'm missing?

Thanks!

rjn72 · 10-23-2010, 01:03 PM

Is the torque converter all the way back?

chevyman95 · 10-23-2010, 01:09 PM

^^^^^^^ Plus 1

I had that problem once and it was that the TQ wasn't on all the way

palposity · 10-23-2010, 02:05 PM

You know what I bet you guys are right. I'll try to re-seat it and see if that does the trick. Thanks. Rookie mistake I guess.
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STOCKISH · 10-23-2010, 02:10 PM

Seen it a hundred times probably over the years. At least you were smart enough to stop and ask questions. I've seen guys put bolts in and run them down with an impact until the trans case broke!

palposity · 10-23-2010, 02:15 PM

I can't believe anyone would use an impact wrench on an aluminum case. Wow. I hope I didn't do any damage to anything trying it while the TC was not seated properly. I guess time will tell.
Posted via Mobile Device

y5mgisi · 10-23-2010, 02:19 PM

Should be only about 1/2" betweeen the converter and the trans case. (as viewed from the bottom near the trans pan)

palposity · 10-23-2010, 09:24 PM

Yep - that was the problem. Took the tranny back off and re-seated the TC. All set now. Thanks guys! I sure hope it still works!

Posting pics in my build thread now.

chevyman95 · 10-24-2010, 01:35 AM

Should still work fine as long as you didn't beat the crap out of it with a hammer or something. This stuff is tougher than we give it credit for.

10-23-2010, 12:55 PM	#1
palposity Registered User Join Date: Sep 2009 Location: Syracuse NY Posts: 684	Annoying Snag in Tranny Installation I have an 86 K20 I'm putting together and for some reason when I attempt to install the TH400 on the back of my 350 engine the tranny comes within a quarter inch of making contact with the engine block and just stops. What gives? I checked and cleaned the dowel holes, tried turning the engine just a hair, but I can't get the stupid tranny on! There doesn't appear to be a guide pin on the end of the tranny shaft. Can you guys think of something I'm missing? Thanks! __________________ Project #1 "Pops"--1980 Chevrolet Scottsdale C10 3rd Generation in the same original owner family. GOAL: Restore to "almost" original. View Project Pops HERE Project #2 "Cletus"--1986 Chevy K20 4.10 Gear Ratio GOAL: Restore into a heavy duty work/plow rig View Project Cletus HERE - SOLD DD--2008 Duramax CCSB

10-23-2010, 01:03 PM	#2
rjn72 Registered User Join Date: Mar 2010 Location: el paso, ar Posts: 139	Re: Annoying Snag in Tranny Installation Is the torque converter all the way back? __________________ JESUS IS LORD 87 crew cab V30 454/400

10-23-2010, 01:09 PM	#3
chevyman95 Registered User Join Date: Mar 2010 Location: Underground Bunker Posts: 284	Re: Annoying Snag in Tranny Installation ^^^^^^^ Plus 1 I had that problem once and it was that the TQ wasn't on all the way

10-23-2010, 02:05 PM	#4
palposity Registered User Join Date: Sep 2009 Location: Syracuse NY Posts: 684	Re: Annoying Snag in Tranny Installation You know what I bet you guys are right. I'll try to re-seat it and see if that does the trick. Thanks. Rookie mistake I guess. Posted via Mobile Device __________________ Project #1 "Pops"--1980 Chevrolet Scottsdale C10 3rd Generation in the same original owner family. GOAL: Restore to "almost" original. View Project Pops HERE Project #2 "Cletus"--1986 Chevy K20 4.10 Gear Ratio GOAL: Restore into a heavy duty work/plow rig View Project Cletus HERE - SOLD DD--2008 Duramax CCSB

10-23-2010, 02:10 PM	#5
STOCKISH Formerly- 1972SuperCheyenne Join Date: Oct 2008 Location: Wake Forest NC Posts: 5,782	Re: Annoying Snag in Tranny Installation Seen it a hundred times probably over the years. At least you were smart enough to stop and ask questions. I've seen guys put bolts in and run them down with an impact until the trans case broke! __________________ --Josh My Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=799218 A good crossthread is better than Loctite any day. Life is not about what you have, but who you have to share it with.

10-23-2010, 02:15 PM	#6
palposity Registered User Join Date: Sep 2009 Location: Syracuse NY Posts: 684	Re: Annoying Snag in Tranny Installation I can't believe anyone would use an impact wrench on an aluminum case. Wow. I hope I didn't do any damage to anything trying it while the TC was not seated properly. I guess time will tell. Posted via Mobile Device __________________ Project #1 "Pops"--1980 Chevrolet Scottsdale C10 3rd Generation in the same original owner family. GOAL: Restore to "almost" original. View Project Pops HERE Project #2 "Cletus"--1986 Chevy K20 4.10 Gear Ratio GOAL: Restore into a heavy duty work/plow rig View Project Cletus HERE - SOLD DD--2008 Duramax CCSB

10-23-2010, 02:19 PM	#7
y5mgisi Second Chance Program Join Date: Jun 2006 Location: Portland, OR Posts: 2,642	Re: Annoying Snag in Tranny Installation Should be only about 1/2" betweeen the converter and the trans case. (as viewed from the bottom near the trans pan)

10-23-2010, 09:24 PM	#8
palposity Registered User Join Date: Sep 2009 Location: Syracuse NY Posts: 684	Re: Annoying Snag in Tranny Installation Yep - that was the problem. Took the tranny back off and re-seated the TC. All set now. Thanks guys! I sure hope it still works! Posting pics in my build thread now. __________________ Project #1 "Pops"--1980 Chevrolet Scottsdale C10 3rd Generation in the same original owner family. GOAL: Restore to "almost" original. View Project Pops HERE Project #2 "Cletus"--1986 Chevy K20 4.10 Gear Ratio GOAL: Restore into a heavy duty work/plow rig View Project Cletus HERE - SOLD DD--2008 Duramax CCSB Last edited by palposity; 10-23-2010 at 09:24 PM.

10-24-2010, 01:35 AM	#9
chevyman95 Registered User Join Date: Mar 2010 Location: Underground Bunker Posts: 284	Re: Annoying Snag in Tranny Installation Should still work fine as long as you didn't beat the crap out of it with a hammer or something. This stuff is tougher than we give it credit for.



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