Re: manifold machining

["nacelp" <nacelp@bright.net>]

Wasn't inferring that at all.
Just I've seen up to 1.5x CID, but with the buick your up to 2.49.  Be
interesting to see what the calibration is like when finished.
Bruce


> Nope, no made up numbers.
>
> The mopar plenum is 11 wide x 8 high x 14 deep.  The Buick plenum is 9
wide
> x 4 high x 16 long.
>
> Its my belief, based on not-so-scientific dyno pulls on the Buick V6
> twin-turbo engine that more plenum is good.  Twin turbo GTP cars often
have
> more than double the engine displacement in the plenum.  Some of my plenum
> volume is occupied, but not a lot of it.  Runners extra.  On the mopar
> engine, the runners are very short (standard dual plane Edelbrock).  On
the
> Buick engine, the runners are homemade, and longer.  I originally had
> something like 14-15" long runners, with a smaller plenum, then reversed
> this.  5" long runners, with a huge plenum.  Aluminum transmission cooler
> brazed inside.
>
> -----Original Message-----
> From: nacelp
> To: gmecm@diy-efi.org
> Sent: 4/7/00 1:31 PM
> Subject: Re: manifold machining
>
> **WHAT?**.
> Fred:
> Is there a typo here?.
> You talking intake tract, or including runners, or what exactly for
> these
> numbers reflect?.
> Grumpy
>
> > My 451cid stroker mopar has a 1232 cid plenum,
> > and my 252cid Buick V6 has a 576 cid plenum.  Though, there is nothing
> wrong
> > with mounting the throttle body right where the carb goes with an
> adaptor
> > plate, for a street car.  Racing is a different story.
> >
>
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