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Old 08-14-2009   #22
Paul Workman
 
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Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,466
Default Re: Removing Secondary Vacuum System questions.

Quote:
Originally Posted by xxxscimitarxxx View Post
Thanks

will drop Haibeck a line

does the chip have a specific programme reference and how much is it?

To use the American venacular....''this is a no brainer''

lm driving mine, not going in for concours shows. I want simplicity and reliability....and this is a good move.

Any other suggestions for stuff to rip out that give you more grief than gogo?

Dave
There are a few options, depending on what all ya want. Mine was a "feature-rich" version tuned for an additional 50 hp coinciding with the top end porting.

As for your question re the two plenums (other post): Plenum design is a balancing act with volume, harmonic frequency, and air column velocity being the major factors - simply put as I can. Smaller engine displacement benefit from smaller runners, and bigger engine displacement need runners with more volume. However, if you mix the two, you can come out loosing instead of gaining. Put a big siamese plenum and IHs on a 350 ci and you could loose low end as well as high end performance. Put a stock plenum on a (stroked & sleeved) 441 motor and you'll choke it to death. It's all in the tuning, and books have been written on this very subject.

P.
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