LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Normal LT vs. Stepped LT, any gain?

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Old 03-01-2009, 04:20 PM
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Default Normal LT vs. Stepped LT, any gain?

http://www.camaroz28.com/forums/show...tepped+headers


Here is a topic that I started a while back, to see what other guys thought about, whether it would be worth it to buy a stepped header over a normal 1 3/4" header..Im debating on the switch, since Im swaping out my topend in a couple weeks...I cant decide whether its worth the additional $800 to switch..Anybody?
Old 03-01-2009, 04:44 PM
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Funny you mention this, I was doing some reading from David Vizard this morning and he had a chart showing Max CFM flow of the head in correlation to header primary size. Around 220 on the exhaust required 1.75 inch exhaust primary. Those 215trickflows flow around 210 without a pipe so add around 20cfm on top of that with the a pipe. Wouldn't be a bad idea to go with the stepped headers if you have the money. You could always sell yours so the cost wouldn't be such a big difference.

For what its worth I have some AFR 216 runner heads on my car that flow 216cfm without a pipe and I have the Kook Stepped headers.
Old 03-01-2009, 05:10 PM
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Im SO glad that you said something..At least you have something to compare to...and experience with what Im talking about..IMO, Id think there would be a benefit, to doing this, I just wasn't sure as to how much.
Old 03-01-2009, 05:15 PM
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Here is the chart Vizard goes by, read the article too, goo info.
http://www.popularhotrodding.com/eng.../photo_04.html
Old 03-03-2009, 12:34 PM
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Anybody else have any insight on this?
Old 03-03-2009, 12:36 PM
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check out the advanced tech section



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