700r4 ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**67sss** · 12-24-2002, 10:08 PM

I had shop put in this rebuilt tranny about 6 months ago and it quit working a couple of days ago. Heres what happened, was warming up the truck to go home from work while in the cab a short loud rumble came from somewhere, I turned off the truck checked for leaks,none, started it back up and it wouldn't move. Checked the fluid level,fine;color was good, no blown fuses, just won't move in either direction.If its the convertor does anyone know if turbo 350s convertors are the same? Thanks.........

cableguy0 · 12-24-2002, 10:54 PM

350 converters will not work. u need a 700r4 verter.

68 with 350 TPI · 12-24-2002, 10:57 PM

Will it move at all in D or R?
Need more info.

I have seen pumps go bad, sun shells break, and very seldom the converters go out.

Can you give any more details?

Was it overheated at all?
was the TV cable adjusted properly?

And no you will need a TC from a 700R4 the 350 wont work.

**67sss** · 12-27-2002, 10:40 PM

Hey everybody thanks for all the info, BUT unfortinately I have some bad news. The pump's no good, it blew apart,litterly. The shop that put this together used old (original) parts to overhaul this. Some of the clutches were a mix and match, the vertor was bad from the factory, the center weld on the knob(?) was off center just enough to cause a slight wabble, thus making this wiggle as it turned.To answer some of the ?'s from posts, it didn't overheat, no D or R, TV cable was taut, and now back to a turbo 350 I go, good thing I have a rebuilt 1 in the shop, bad thing is now I have to get a driveline cut and balanced again, I have several of those too.I let ya know how it goes in when I"m lightin" up this weekend to blow out the soot and vent my frustrations.Thanks again...c-ya!

**68 Stepside** · 12-27-2002, 11:42 PM

Why do you have to use the TH350? Can't you get the shop to fix the 700R4, or did I miss something? Granted, it's been 6 months, but come on, with mix and matched parts, that's just a crock.

Longhorn Man · 12-28-2002, 01:01 AM

Yeah, sounds kinda fishey to me.
If they won't fix it...I would spread a pretty bad work about them.

68 with 350 TPI · 12-28-2002, 01:39 AM

I figured it may have been the pump as I posted above

I have seen many of them go bad from a bad converter.
Way too common of a problem here.

The part you are talking about that was welded wrong sits in agaist the crank and gives the converter somthing to ride...... While the flexplate is bolted to the outer edges if the center of the converter is not in the middle it will wobble and that can cause all kinds of bad things to the pump

I would have a talk with the shop and see what happens or take them to to civil court.

Sounds like they did a 1/2 ass job ,plus used cheap parts and they need to pay for it to be fixed or fix it themselves.

Most people think of a 700R4 as week because of shops like this.
I hear all the time well my 700 only lasted a few months before it went.
Bad trans shop end of story here.

BTW there is a little more to adjusting the TV valve than just having it tight.
It also adjusts shift timming,feel, as well as internal pressure.

Keep us posted on this one.

12-24-2002, 10:08 PM	#1
67sss Registered User Join Date: Nov 2002 Location: Mt. Vernon, WA.. Posts: 2,325	700r4 ? I had shop put in this rebuilt tranny about 6 months ago and it quit working a couple of days ago. Heres what happened, was warming up the truck to go home from work while in the cab a short loud rumble came from somewhere, I turned off the truck checked for leaks,none, started it back up and it wouldn't move. Checked the fluid level,fine;color was good, no blown fuses, just won't move in either direction.If its the convertor does anyone know if turbo 350s convertors are the same? Thanks.........

12-24-2002, 10:54 PM	#2
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	350 converters will not work. u need a 700r4 verter. __________________ 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.

12-24-2002, 10:57 PM	#3
68 with 350 TPI Registered User Join Date: May 2002 Location: Wingate NC Posts: 456	Will it move at all in D or R? Need more info. I have seen pumps go bad, sun shells break, and very seldom the converters go out. Can you give any more details? Was it overheated at all? was the TV cable adjusted properly? And no you will need a TC from a 700R4 the 350 wont work. __________________ Life is good with a 6-71 supercharged 355 in a 72 camaro

12-27-2002, 10:40 PM	#4
67sss Registered User Join Date: Nov 2002 Location: Mt. Vernon, WA.. Posts: 2,325	700r4 UPDATE Hey everybody thanks for all the info, BUT unfortinately I have some bad news. The pump's no good, it blew apart,litterly. The shop that put this together used old (original) parts to overhaul this. Some of the clutches were a mix and match, the vertor was bad from the factory, the center weld on the knob(?) was off center just enough to cause a slight wabble, thus making this wiggle as it turned.To answer some of the ?'s from posts, it didn't overheat, no D or R, TV cable was taut, and now back to a turbo 350 I go, good thing I have a rebuilt 1 in the shop, bad thing is now I have to get a driveline cut and balanced again, I have several of those too.I let ya know how it goes in when I"m lightin" up this weekend to blow out the soot and vent my frustrations.Thanks again...c-ya!

12-27-2002, 11:42 PM	#5
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,690	Why do you have to use the TH350? Can't you get the shop to fix the 700R4, or did I miss something? Granted, it's been 6 months, but come on, with mix and matched parts, that's just a crock. __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

12-28-2002, 01:01 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Yeah, sounds kinda fishey to me. If they won't fix it...I would spread a pretty bad work about them.

12-28-2002, 01:39 AM	#7
68 with 350 TPI Registered User Join Date: May 2002 Location: Wingate NC Posts: 456	I figured it may have been the pump as I posted above I have seen many of them go bad from a bad converter. Way too common of a problem here. The part you are talking about that was welded wrong sits in agaist the crank and gives the converter somthing to ride...... While the flexplate is bolted to the outer edges if the center of the converter is not in the middle it will wobble and that can cause all kinds of bad things to the pump I would have a talk with the shop and see what happens or take them to to civil court. Sounds like they did a 1/2 ass job ,plus used cheap parts and they need to pay for it to be fixed or fix it themselves. Most people think of a 700R4 as week because of shops like this. I hear all the time well my 700 only lasted a few months before it went. Bad trans shop end of story here. BTW there is a little more to adjusting the TV valve than just having it tight. It also adjusts shift timming,feel, as well as internal pressure. Keep us posted on this one. __________________ Life is good with a 6-71 supercharged 355 in a 72 camaro Last edited by 68 with 350 TPI; 12-28-2002 at 01:42 AM.



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