CrossFire/'7747

[David & Cheryl Haggard]

> FWIW,
> just remember, the air's velocity goes up with the smaller
> bores, and making
> the bends to the ports just might try to drop the fuel out of
> suspension
> more so, then larger single bores, would.
> Bruce

   Just the kind of feedback I'm looking for.
   But actually, there is very, very little more bend in my runners now than
there were originally. The runners are mainly just taller.
   As I see it, the Crossfire may force compromises no matter what you do.
Originally, the runners are very straight, and make for high air velocity.
But they're so small you can't get high-rpm power out of them. They're built
for gobs of low-end torque.
   Opening up the runners as I have will support rpm well past my targeted
6500 rpm red line in my 305. But how my low end will suffer I won't know
until everything is bolted on and tuned up.
   Temporary unemployment has put a serious hold on my build, which was
supposed to be done last month. As it is, I just ordered my timing set this
weekend. A Cloyes "TRUE" roller set for "small block Chevy originally
equipped with roller camshaft." 80 bucks from Jeg's. Ouch! Cam and rockers
are on hold for a bit longer. When the budget will clear them, I'll build it
and we'll see for sure.
   <sigh>
   I looked into the Offenhauser Crossram manifold, but decided it's way too
much manifold for a streetable 305.

Dave Haggard
   1988 Formula Firebird
   305 2 X 2-bbl CFI (under construction)
   http://www.newcovenant.com/firebird/

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