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#1 |
Amazed Member
![]() Join Date: May 2010
Location: Dahlonega Georgia
Posts: 486
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Getting Started on my 71 GMCand I Need some advice...
Hey I am finnally getting started on my project. A 71 GMC Long Fleetside.
Picture... I purchased a complete truck with 88000 original miles. I bought it from #2 owner, although it was never registered to #2. #1 owner still lives in county. #2bought truck broken. Starter wouldn't engage flywheel all the time. #2 pulled engine and trans to replace flywheel and found flywheel ok but engine had excessive front to back play on crank. He stopped working on it. Engine and trans were both stored inside complete for the past 4-5 years. The engine appeantly has a Crank Thrust Issue. I havnt taken it apart yet. The #1 owner had TH350 rebuilt in 2004 by a local AMMCO (paperwork in glove box) its supposed to be excellent. I have read where the torque converter can balloon? or possibly the front pump could shove the TQ forward and cause simular damage. This is a LOW BUDGET PROJECT... can a transmission guy look at the Tranny and TQ and determine the problem? |
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#2 |
Man of Mini-Talents
Join Date: Sep 2009
Location: Oklahoma City, OK
Posts: 4,295
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Re: Getting Started on my 71 GMCand I Need some advice...
Do the number of teeth on the flywheel match up with the starter?
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#3 |
Amazed Member
![]() Join Date: May 2010
Location: Dahlonega Georgia
Posts: 486
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Re: Getting Started on my 71 GMCand I Need some advice...
Yea Zoomin, its the right flywheel. Sometimes it was just to far out of place for the starter drive to engage it.
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#4 |
Registered User
Join Date: Nov 2007
Location: Indianapolis
Posts: 1,162
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Re: Getting Started on my 71 GMCand I Need some advice...
would a starter shim or 2 help?
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#5 |
Registered User
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
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Re: Getting Started on my 71 GMCand I Need some advice...
If you have excessive crank end play, thats the crankshaft thrust bearing. Those almost never wear very much unless, as you suspect, you have a transmission problem.
The only thing is, the bearing would wear in the forward direction, not the rear. If I am understanding you correctly, you are saying the opposite - your flywheel has moved away from the starter, not toward it You will need to pull it apart for a look. Ray |
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#6 |
Registered User
Join Date: Jan 2009
Location: Aurora,Il ..born,raised and still live in the same house
Posts: 286
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Re: Getting Started on my 71 GMCand I Need some advice...
I just went through this last week. My buddy bought a truck because the previous owner couldn't start it. It turned out the flywheel was on BACKWARDS!
We turned it around and bam! truck runs perfect. yes, you can put a flywheel on backwards we found out LOL.
__________________
I love stock! Not really into the whole bagged, squished,chopped, drooped,cut, bent,lifted,twisted,split,decked,massaged,tubbed,jacked trend. (o.k. slightly lowered is fine) For the love of god, just drive it before you forget what the truck is supposed to look like !....LOL |
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#7 |
Its a Truck Thing......
Join Date: Dec 2004
Location: Sierra Vista, Arizona
Posts: 3,159
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Re: Getting Started on my 71 GMCand I Need some advice...
Murphys Law is a motha.......
![]() Smitty
__________________
71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 71 C20 Longhorn/Ole Yellor 69 C30 Former Motor Home, Flat Bed time |
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