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Old 01-30-2009 | 09:57 AM
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Arrow throttle body

Can anything be done with the stock 502/415 HP MPI throttle body
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Old 01-30-2009 | 09:17 PM
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You can bore them and make new butterfly's. I did this a couple of years ago to a '94 mpi.
Opened bores from 2.36 to 2.53 and made a jig to turn new plates.

I can't tell you the stock flow but C&S racing flowed this at 1130cfm @1.5 hg.
The suprise was when they flowed it with a whipple spark arrester and it went down to 850 @ 1.5 hg.
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Old 01-31-2009 | 12:32 AM
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I also found a local source for having 502 throttle bodies bored and blended,I picked up a noticeable power increase (about 10-11 hp on the dyno) with a ported intake running normally aspirated,Smitty
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Old 02-03-2009 | 09:00 AM
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Originally Posted by midwest272
You can bore them and make new butterfly's. I did this a couple of years ago to a '94 mpi.
Opened bores from 2.36 to 2.53 and made a jig to turn new plates.

I can't tell you the stock flow but C&S racing flowed this at 1130cfm @1.5 hg.
The suprise was when they flowed it with a whipple spark arrester and it went down to 850 @ 1.5 hg.
Who can do the work and how much
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Old 02-05-2009 | 12:53 AM
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Originally Posted by Ken N
Who can do the work and how much
I have a local source to have it done if you want to send it to me,Smitty
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Old 02-05-2009 | 09:25 AM
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$$$$$?????
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