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Double pumper vs Vacuum

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Old Oct 30, 2007 | 08:11 PM
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Default Double pumper vs Vacuum
650 double pumper or 670 vacuum secondary.
I'm putting it on a stock 350/300 HP, alum. manifold, 4 speed, 3.08 rear
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Old Oct 30, 2007 | 08:59 PM
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I recommend the DP with the 4 speed, vacuum with an auto
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Old Oct 30, 2007 | 10:07 PM
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With your rear gears, you need the vacuum.
It will bog otherwise.
Terry
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Old Oct 31, 2007 | 03:31 AM
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You really will not see a performance gain. It will dump more gas too quickly than you will be able to use with your current set up.
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Old Oct 31, 2007 | 08:22 AM
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If you drive hard & want a double pumper, 600 would be a better match for your setup.
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