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04-25-2008, 05:43 PM
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#1 |
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Registered User
Join Date: Jan 2008
Location: SURREY BC, CANADA
Posts: 278
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Turbo 400
i have a leaky turbo 400 im gonna change the pan, gasket and filter any tip tricks instructions and toqure specs would be greatly apprecited
Thanks in advance Josh |
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04-25-2008, 06:02 PM
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#2 |
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The Older Generation
   
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,360
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Re: Turbo 400
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Nothing here other than you might want to check the rear seal while you are under there. LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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04-25-2008, 06:22 PM
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#3 |
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Senior Member
Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,861
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Re: Turbo 400
I'd say before you start,dry it off real good and run it around a bit and find EXACTLY where it is leaking from. Front seal = got to come out for repair.Speedo,shift linkage,cooler lines, can leak down giving the appearance that the pan is leaking,etc.
If it IS the pan leaking,take it off and gently pound out any distortions caused by over-tightening the bolts. torque pan bolts to 12 lbs.only. Then after a week or so of use,re-torque (12 lbs again).
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, 2nd owner, Work-Truck supreme. Best $300 I ever spent. Last edited by WorkinLonghorn; 04-25-2008 at 06:23 PM. |
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04-25-2008, 06:41 PM
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#4 |
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Registered User
Join Date: Jan 2008
Location: SURREY BC, CANADA
Posts: 278
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Re: Turbo 400
Thanks for the tips i found the leak and it is from the pan gasket and im replacing the pan so i dont have to pound it flat
Thanks again Josh |
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04-25-2008, 07:00 PM
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#5 |
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It's a catastrophic success.
Join Date: Jan 2003
Location: Oklahoma
Posts: 2,077
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Re: Turbo 400
One other thing, check the pan after its off for raised bolt holes(from over tighting). Lay the edge of the pan on a 2x4 and tap with a hammer to flatten out the humps, will help the new gasket to seal better.
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04-25-2008, 08:34 PM
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#6 |
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Neighborhood Pickle Slinger
Join Date: Jan 2007
Location: Cadolzburg, Bavaria, Germany
Posts: 2,224
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Re: Turbo 400
If I knew it was going to leak after I took the first test run, I would have replaced the little ring where the shifter Linkage goes into the housing.
To do this I had drain the transmission again and get a new seal for the pan because it ripped when I was taking it out.
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-------------------------------------------------- My C10 Diary Our cars: 1966 Chevrolet Chevelle 396 - TH350 1968 Chevrolet C10/CST 327 TH400/375 1969 Corvette Stingray 350 - Muncie Manual Trans 1969 Chevrolet ElCamino 350 - TH400 1970 Cutlass Supreme Convertible - 350 Rocket - TH350 1973 Camaro LT - New Engine Done - TH350 1973 Corvette Convertible 454 - TH400 |
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04-25-2008, 09:04 PM
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#7 |
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Registered User
Join Date: Jul 2007
Location: Salina, Kansas
Posts: 1,998
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Re: Turbo 400
if u have a tranny that was rebuilt about 14,000 miles ago when do u change the tranny fluid...
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1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796 |
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04-25-2008, 09:07 PM
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#8 |
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Senior Member
Join Date: Apr 2008
Location: Franklinton NC
Posts: 1,309
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Re: Turbo 400
At 15000 miles then again at 50
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04-25-2008, 11:44 PM
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#9 |
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18 Till I Die
Join Date: Mar 2005
Location: Alberta, Canada
Posts: 1,522
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Re: Turbo 400
Look around for a aluminum pan they seal better and dont warp.
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2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home... 
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04-26-2008, 03:49 AM
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#10 |
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Registered User
Join Date: Jan 2008
Location: SURREY BC, CANADA
Posts: 278
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Re: Turbo 400
Got the new pan and filter kit a little bit of bling bling lol/Users/donnareynolds/Desktop/S4020190.JPG
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04-26-2008, 03:50 AM
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#11 |
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Registered User
Join Date: Jan 2008
Location: SURREY BC, CANADA
Posts: 278
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Re: Turbo 400
sorry couldnt post the pic but its like the one from lmc hopefully be able to get it installed this weekend
Thanks again for the help Josh |
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