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#1 |
Ain't we cute?
Join Date: May 2002
Location: Friendswood, TX
Posts: 700
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How (hard) to drain and fill tranny including converter?
I got 10 quarts o' fluid. Will that be enough? I'll be doing this with the motor out (swapping it). Is there anything else I should do while I am in there?
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69 C10 2WD LWB Fleet 350/350 power front disc conversion (6 lug disc kit from gmcpauls) and new engine, PS, A/C, fresh fluids, SHE DRIVES! FOR SALE $3900 ![]() |
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#2 |
Senior Member
![]() Join Date: Sep 2001
Location: Seattle, WA, USA
Posts: 5,817
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That's plenty.
1. Check your converter neck for wear. That will indicate if you need a new bushing in your front pump and a new converter. If its grooved you have some more work to do. If not you're cool. 2. I'd replace your front and back main seals just as a matter of course since the front pump is exposed. 3. Replace your filter and your pan gasket. Think about either putting in a drain plug, or get a new pan with one in it. 3. Pour 1 qt into your converter before you put it back on your tranny, and make sure its seated completely into the pump before you bolt the engine to it (there's a measurement from the converter flex plate hole-to-tranny flange that tells you if its totally seated. For 400s its 7/8". I don't know what it is for 350s). If its not in all the way you could mess up your pump. That's all my brain is telling me. ![]() Oh yeah, get a tranny book on the 350. Read it. You'll be happy you did.
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'69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA. |
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#3 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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the best thing to do is drill a hole in the converter and put a drain plug in it. or wait till its all back together and have the transmission flushed at a shop.it does wonders and every last drop of old fluid is taken out of the tranny. basically its a machine that gets hooked to ur tranny cooler lines that has two tanks on it
one for new fluiod and one for the incoming old fluid. with the vechile idling in park the machine sends new fluid in one line and the tranny pump pushes the old out of the other line. the transmission never runs low on fluid through the entire process
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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#4 |
Ain't we cute?
Join Date: May 2002
Location: Friendswood, TX
Posts: 700
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Thanks, guys. Mucho thanks!
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69 C10 2WD LWB Fleet 350/350 power front disc conversion (6 lug disc kit from gmcpauls) and new engine, PS, A/C, fresh fluids, SHE DRIVES! FOR SALE $3900 ![]() |
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#5 |
Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,746
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it's not a big deal, but to get the bolts out of the tranny pan, you have to unbolt the tranny from the crossmember and jack it up about an inch
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![]() ![]() 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI |
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#6 |
Registered User
![]() Join Date: Apr 2000
Location: Bradenton, FL
Posts: 1,036
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If your changing the front and rear seals then change the bushings too.
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1970 CST/10 402,700R4,3:73 posi,AC,PS,PB,TLT,PW,Buckets with heaters |
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#7 | |
Transcendental Trucker
Join Date: Dec 2001
Location: Rockaway Beach, OR
Posts: 374
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Quote:
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Patrick Sullivan | sullivan@oregoncoast.com Rockaway Beach, Oregon 1972 Chevy Cheyenne C-20 1998 Dodge Dakota 4x4 So, fill to me the parting glass And drink a health whate'er befalls... Then gently rise and softly call Goodnight and joy be to you all! |
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#8 |
Registered User
![]() Join Date: Dec 1999
Location: Modesto, CA
Posts: 565
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i was wondering this also. so the easiest way to drain it is to take off the tranny pan and catch as much fluid as you can? what about all the fluid in the lines and coolers?
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Current owner of 2016 2500 Silverado Midnight Edition. Former owner of: 69 1/2 ton, change from long/fleet to short/fleet, shaved door handles, shaved tailgate, 4/6 drop, power windows, 700r4 72 blazer, 350 with Holley Commander 950 DFI, crane energizer cam, 350 tranny, dual sanderson blockhuggers/magnaflow exhaust |
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#9 |
Senior Member
![]() Join Date: Sep 2002
Location: Hampstead, NC
Posts: 8,187
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What's involved with changing the front seal and bushings (tranny out already)? Also, can these parts be bought at your local parts store?
Thanks. |
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#10 |
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,403
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The front seal is no problem, I cut a lenght of 3" ex tubing to use as a driver. The pump bushing is another story tho......you need to remove the pump,separate the 2 halves,& use a bushing driver to install the bushing. .....crazy longhorn
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