I don't know why it's whistling. Maybe it's happy? Maybe it's making a
spot of tea?
The 1850 is 600 CFM, not 650, but then those are only advertised numbers anyway.
An 1850 is a lot smoother, even on a 289, and has no sogs or bogs.
Holley is still making new ones, but there is NO PCV valve tube. This
leaves you with a spacer needed. A BOSS 302 is only about 1/4 inch
thick, but it won't leave you any room with a hi-rise F4B or Performer
RPM manifold and a stock air cleaner, unless you run a LAT hood.
Some have dropped their engine height by removing the stock steel
washers between the motor mount and the block. So many, in fact, that
few realize they had them.
Unless, of course, you take your expensive 6 blade Ford fan, cut it to
fit perfectly, and someone changes your mounts and leaves the spacer
washers out. Then you wonder what that vibration is until 1800 rpm. It
goes away fairly soon, and your fan tips now have a strange shape to the
them. BTDT {8-(
--
Steve Laifman < Find out what is most >
B9472289 < important in your life >
< and don't let it get away!>
<SLaifman@SoCal.RR.com>
<http://www.TigersUnited.com/gallery/SteveLaifman.asp>
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