Th350 broken vacuum modulator bracket tab - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ibinyth · 07-01-2019, 08:38 PM

Driving down the road after a fluid change all of the sudden I'm spewing fluid all over the road. After a $60 towing bill and time to get around to examining I find my issue. Vacuum modulator, and bracket both missing. Assuming the bolt bracked out however, the tab apparently broke at some point in the trucks life and was simply bonded back on. What's the best possible way to reattach it as its simply a 1/4 wide piece of threads and I plan on doing a 700r4 swap in a few months.

ibinyth · 07-01-2019, 08:39 PM

http://imgur.com/gallery/p3FPoUr

ibinyth · 07-01-2019, 08:44 PM

NEVERMIND

Think I figured it out... When I did the fluid change someone had wire wrapped around the crossmember. Me not thinking anything of it as it didn't look to be doing much I cut it. Guess I figured out its purpose after all

tdangle · 07-02-2019, 01:50 PM

Always interesting how these trucks were "fixed" throughout the years. Never get away with it on newer cars/trucks.

sKnNyPpY · 07-07-2019, 03:50 PM

Longer bracket bolts to the extension housing. https://www.transmissionpartsusa.com...-00047307b.htm

**Ironangel** · 07-07-2019, 04:05 PM

Quote:

Originally Posted by sKnNyPpY

Longer bracket bolts to bell housing. https://www.transmissionpartsusa.com...-00047307b.htm

Nice find! Bolts to the "Extension Housing"

sKnNyPpY · 07-07-2019, 04:22 PM

oops, edited. I was working from memory and it was written right there in the link! Part works great BTW, for some reason I still had to use multiple o-rings on the modulator to keep from leaking/sucking air though.

07-01-2019, 08:38 PM	#1
ibinyth Registered User Join Date: Jun 2018 Location: kannapolis north Carolina Posts: 29	Th350 broken vacuum modulator bracket tab Driving down the road after a fluid change all of the sudden I'm spewing fluid all over the road. After a $60 towing bill and time to get around to examining I find my issue. Vacuum modulator, and bracket both missing. Assuming the bolt bracked out however, the tab apparently broke at some point in the trucks life and was simply bonded back on. What's the best possible way to reattach it as its simply a 1/4 wide piece of threads and I plan on doing a 700r4 swap in a few months.

07-01-2019, 08:39 PM	#2
ibinyth Registered User Join Date: Jun 2018 Location: kannapolis north Carolina Posts: 29	Re: Th350 broken vacuum modulator bracket tab http://imgur.com/gallery/p3FPoUr

07-01-2019, 08:44 PM	#3
ibinyth Registered User Join Date: Jun 2018 Location: kannapolis north Carolina Posts: 29	Re: Th350 broken vacuum modulator bracket tab NEVERMIND Think I figured it out... When I did the fluid change someone had wire wrapped around the crossmember. Me not thinking anything of it as it didn't look to be doing much I cut it. Guess I figured out its purpose after all

07-02-2019, 01:50 PM	#4
tdangle Registered User Join Date: Mar 2005 Location: Jurupa Valley, Ca Posts: 1,210	Re: Th350 broken vacuum modulator bracket tab Always interesting how these trucks were "fixed" throughout the years. Never get away with it on newer cars/trucks. __________________ Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC

07-07-2019, 03:50 PM	#5
sKnNyPpY Registered User Join Date: Sep 2012 Location: Columbia, SC Posts: 549	Re: Th350 broken vacuum modulator bracket tab Longer bracket bolts to the extension housing. https://www.transmissionpartsusa.com...-00047307b.htm __________________ Life is too long to go slow... 71 GMC 1500 Super Custom LWB 350/350 AC(replaced w/vintage air)/PS/PB 2.5 CPP Spindle, 1" CPP Drop Spring, CPP Front and Rear Sway Bars/DJM Flip, new General Spring KC 5 spring pack, HEI /IntReg Alt 20x8.5 OldSkools 5" BS, 275/45 Falkens Last edited by sKnNyPpY; 07-07-2019 at 04:20 PM.

07-07-2019, 04:22 PM	#7
sKnNyPpY Registered User Join Date: Sep 2012 Location: Columbia, SC Posts: 549	Re: Th350 broken vacuum modulator bracket tab oops, edited. I was working from memory and it was written right there in the link! Part works great BTW, for some reason I still had to use multiple o-rings on the modulator to keep from leaking/sucking air though. __________________ Life is too long to go slow... 71 GMC 1500 Super Custom LWB 350/350 AC(replaced w/vintage air)/PS/PB 2.5 CPP Spindle, 1" CPP Drop Spring, CPP Front and Rear Sway Bars/DJM Flip, new General Spring KC 5 spring pack, HEI /IntReg Alt 20x8.5 OldSkools 5" BS, 275/45 Falkens



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