TH350 to 7R400 swap with 2Jet Carb - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ventura76 · 07-11-2016, 07:09 PM

Hi,

The 7R400 is now under the truck. Assuming that there is no vacuum modulator on the TH700R4 just the TP cable. What happen to the vacuum line that was there for the TH350.

Do I have to keep it open or simply close it?

Thanks

D13 · 07-12-2016, 12:47 PM

Remove it and cap it at the manifold / carb.
Pretty Vacuum port caps are inexpensive. We (cheap) farmers the pipe out of the hose at the manifold and run in a screw.

Ventura76 · 07-12-2016, 04:24 PM

Love the screw idea

Thanks for your help

geezer#99 · 07-12-2016, 04:54 PM

Even better yet, use a golf tee!

07-11-2016, 07:09 PM	#1
Ventura76 Registered User Join Date: Oct 2015 Location: Quebec City Quebec Posts: 29	TH350 to 7R400 swap with 2Jet Carb Hi, The 7R400 is now under the truck. Assuming that there is no vacuum modulator on the TH700R4 just the TP cable. What happen to the vacuum line that was there for the TH350. Do I have to keep it open or simply close it? Thanks

07-12-2016, 12:47 PM	#2
D13 Registered User Join Date: Feb 2007 Location: Memphis MI Posts: 1,851	Re: TH350 to 7R400 swap with 2Jet Carb Remove it and cap it at the manifold / carb. Pretty Vacuum port caps are inexpensive. We (cheap) farmers the pipe out of the hose at the manifold and run in a screw. __________________ 1987 2 ton 1982 250/TH350 beater in progress Dad's 1981 3/4 L6 3 on tree posi and no options, awaiting restoration or scrapping Plus a mess o' tractors

07-12-2016, 04:24 PM	#3
Ventura76 Registered User Join Date: Oct 2015 Location: Quebec City Quebec Posts: 29	Re: TH350 to 7R400 swap with 2Jet Carb Love the screw idea Thanks for your help

07-12-2016, 04:54 PM	#4
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,540	Re: TH350 to 7R400 swap with 2Jet Carb Even better yet, use a golf tee!



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