TH350C - How to Set Up the Lockup - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**clay68c10** · 03-28-2009, 01:27 PM

I bet this would work for a 700R4. Anyone know if it will?

*C-10 simplex* · 04-20-2009, 11:34 PM

Can the trans be run without the lockup feature without damaging the transmission?

Houston54 · 04-21-2009, 02:02 PM

Yes it can.

*C-10 simplex* · 04-22-2009, 10:08 AM

Also, i know that the computer(or something) will lock it up (mine is an 83 1/2 ton) and when you press the brakes it will unlock.

What i'm wondering what the vacuum thing is for----which i partially understand will unlock it upon deceleration. Why is this nessesary(if it all)?

The reason why i'm asking is i will have to swap motors (long, sad story why--another topic) and the "new" motor has a different manifold with less/different/non-original vacuum line patterns.

Lugnut64052 · 04-24-2009, 02:18 AM

Quote:

Originally Posted by clay68c10

I bet this would work for a 700R4. Anyone know if it will?

Pretty sure it will. I believe you could use the same setup to lockup a 700R4, a 200-4R or a 350.

Houston 54, thanks for the Delco part numbers. Sure simplifies things.

03-28-2009, 01:27 PM	#1
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,958	Re: TH350C - How to Set Up the Lockup I bet this would work for a 700R4. Anyone know if it will? __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

04-20-2009, 11:34 PM	#2
C-10 simplex Account Suspended Join Date: Dec 2008 Location: indisclosed Posts: 1,515	Re: TH350C - How to Set Up the Lockup Can the trans be run without the lockup feature without damaging the transmission?

04-21-2009, 02:02 PM	#3
Houston54 Registered User Join Date: Feb 2005 Location: location Posts: 527	Re: TH350C - How to Set Up the Lockup Yes it can.

04-22-2009, 10:08 AM	#4
C-10 simplex Account Suspended Join Date: Dec 2008 Location: indisclosed Posts: 1,515	Re: TH350C - How to Set Up the Lockup Also, i know that the computer(or something) will lock it up (mine is an 83 1/2 ton) and when you press the brakes it will unlock. What i'm wondering what the vacuum thing is for----which i partially understand will unlock it upon deceleration. Why is this nessesary(if it all)? The reason why i'm asking is i will have to swap motors (long, sad story why--another topic) and the "new" motor has a different manifold with less/different/non-original vacuum line patterns.



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