Vac. modulator on blower motor - Chevelle Tech

Transmission & Driveline Transmissions and Differentials

 
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post #1 of 4 (permalink) Old Dec 14th, 03, 11:28 PM Thread Starter
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Jim
 
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This is for a friend of mine, he’s building a blown BB. It will have a turbo 400 & is wondering the best way to hook up the vac. modulator , carb base vac. or below the blower or would it be better to use a cable operated modulator??

Jim

Jim

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post #2 of 4 (permalink) Old Dec 14th, 03, 11:37 PM
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Jake
 
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77,
A friend of mine ran a TH350 behind a 6-71'd SBC and the vacuum off the back of the carb worked fine.

On a TH400,
you can get the mechanical modulator off a diesel application...

Good luck.

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post #3 of 4 (permalink) Old Dec 15th, 03, 6:21 AM
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The the mechanical modulator setup off a diesel application, mentioned above is best way to do this right.
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post #4 of 4 (permalink) Old Dec 15th, 03, 10:06 AM Thread Starter
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Jim
 
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I ran one way back when hooked to the carb base & not a problem, but I told him I might be concerned about too much vac. @ part throttle. I don't know how much vac. you get @ P/T on these apps. I never checked mine only @ idle which was 10 in.

He works @ a GM dealer so the mechanical one would be no problem.

Thanks
Jim
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