Header collector size

joes68340s said

Has anyone experimented with collector diameter. Like running 3 inch collectors and then running 2 1/2 collector extensions. Any idea if it would make a big difference in ET or mph. I ask because a friend bought a Drag car and that was how it was set up. We wondered how much it would slow it down.

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If you are serious about getting the right length for your engine combo, you need to buy this software.

http://www.maxracesoftware.com/PIPE39.htm

PipeMax is designed to predict proper header length, diameter and collector length.
PipeMax is a grate program

But there is many other freebies that come with this program.

It's well worth the money. if not........the - "paint and cut" - is as close as you will ever get.