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Thread: What Size Header Primary Tube
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04-08-2010 #1
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What Size Header Primary Tube
Wondering what size primary tube for headers to go with on small block 427 w/ approx. 570-80 hp
Gaetano Cosentino
Dont Drive Faster Than Your Angels Can Fly
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04-09-2010 #2
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1 7/8 " or 2"?, engine builder says he dyno's with 2" but most his customers using 1 7/8". Anybody with any experience in this department?
Gaetano Cosentino
Dont Drive Faster Than Your Angels Can Fly
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04-09-2010 #3
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Close call. Any wayu your guy can dyno with both sizes and see which curve you like better?
Nick R.
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04-09-2010 #4
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Wow, why didn't I think of that! Good call, hopefully he can accomodate me.
Originally Posted by 6'9"Witha69
Gaetano Cosentino
Dont Drive Faster Than Your Angels Can Fly
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04-09-2010 #5
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............ and then there are stepped primaries. Would there be any advantage in them?
KenIf there is a hard way to do something, I'll find it!
My other car is a Vega.
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04-09-2010 #6
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Whats the RPM range on the 427?
Stay in it till you see God....then lift
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04-10-2010 #7
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3000-7000 Originally Posted by 406 q-ship
Gaetano Cosentino
Dont Drive Faster Than Your Angels Can Fly
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