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FE Power Forums => FE Technical Forum => Topic started by: klassickars on November 09, 2019, 09:26:28 AM

Title: Cammer Vacuum Question
Post by: klassickars on November 09, 2019, 09:26:28 AM

I am building a Cammer and plan to use an early Ford C6 transmission but have no idea how much manifold vacuum to expect for the shift modulator.  I want to avoid a manual shift valve body.  Using Pond block and heads, 11:1 compression, Comp street lift cams, original single carb intake with Holley HP.  What kind of vacuum numbers are you Cammer folks seeing out of similar builds?  Phil

Title: Re: Cammer Vacuum Question
Post by: jayb on November 09, 2019, 09:58:14 AM

What are the cam specs, and how many cubic inches?  That will play into the amount of vacuum you have.

Title: Re: Cammer Vacuum Question
Post by: klassickars on November 10, 2019, 07:48:34 AM

Looking for actual numbers from running engines.  Surely someone has hooked up a vacuum gauge to a Cammer.

Title: Re: Cammer Vacuum Question
Post by: blykins on November 10, 2019, 07:56:41 AM

You can make it whatever you need it to be.  It will all depend on the engine specs and cams that are ground for you.

Manifold vacuum literally depends on a plethora of specs.