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1960 GMC K1000 4x4
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07-18-2012, 05:58 PM
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KroAutomotiveInc
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Join Date: Jun 2010
Location: UT
Posts: 908
Re: 1960 GMC K1000 4x4
Quote:
Originally Posted by
McMurphy
they are so you can run basically straight headers and bypass your mufflers which rob you of horsepower.
the robing of horse power is it just from the loss of back pressure?
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1964 GMC
http://67-72chevytrucks.com/vboard/s...d.php?t=419525
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