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- - 69 c10 ls/th350 (https://67-72chevytrucks.com/vboard/showthread.php?t=759245)

69BUCKET

03-13-2018 10:59 PM

69 c10 ls/th350

What are guys using to "T" off at LS truck intake to use for brake booster and th350 modulator vacuum?

67 chevelle

03-13-2018 11:10 PM

Re: 69 c10 ls/th350

There is a nipple on the back of the manifold , or 2 , I think you have to pop off the end of it if the donor truck had hydraboost

69BUCKET

03-14-2018 12:15 AM

Re: 69 c10 ls/th350

Not sure if donor had hydro or not. It does have an opening for booster I think...measures 7/8". Been trying to find a T fitting ...no luck yet.

suburban99

03-14-2018 12:26 AM

Re: 69 c10 ls/th350

My 6.0 LQ4 donor did not have a booster as it had hydro boost. However the vacuum was on the back of the manifold but it had a plug in it. Pulled out the plug and used a vacuum hose off a 1500 truck that had a vacuum booster.

As far as the TH350 modulator, I connected to a nipple on the manifold on the passenger side. It was capped as well but I just cut off the cap. transmission shifts as it should.

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