C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Siamesed TPI Base and Runners

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Old Jun 7, 2007 | 04:39 PM
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dan_t
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Burning Brakes
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Joined: Aug 2006
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From: BC
Default Siamesed TPI Base and Runners

I've tried to look into this as far as I can with differing results.

I've got a spare TPI to do the work on, and from what I hear this is a very worth while mod to to.

What i'd like to know is HOW DEEP and HOW FAR to Siamese and Port them. I can imagin theres a point where power will be lost if taken too far.

I have aluminuim heads and slightly better breathing cam. I want to go for something much more aggressive in the cam area - I NEED some lope!

Please if anyone has done this please get in touch. Some before after comparisons would be great.

If anyones interested I will do a HOW-TO with pictures when I do mine. I also hope to be able to do a Power Run - before and after - on the same day/conditions.

Thanks in Advance,

Dan
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Old Jun 7, 2007 | 06:39 PM
  #2  
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Stealthvette
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From: Blue Ridge GA
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Yep, BTDT with no real benefit. Get an open intake design if you want to go radical on a cam.
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