"KenCo" <ken@kencofish.com> wrote in message
>
> a "made" manifold has the mounting surfaces the same as a blower base,
> were talking a spacer/adaptor here.
OK, that makes more sense now, somewhere along the line I got confused.
> just use the #'s 4/71 = 4 cyls. that are 71 cu in per cyl
> 4/53 = 4 cyls x's 53 cu in. etc etc.
That sheds some light on the numbering scheme, I didn't really know what
those numbers stood for...
> so, 4/53 = 212 cu in at 1-1 ratio. 4/71 = 284 cu in and so on.
> in a racing engine they are overdriven to whatever boost is needed.
> there are charts on the web that show what pulley combo = PSI boost.
>
> Ideally an 8/71 that is underdriven would last the longest vs a
> 4/71 that is overdriven. easy huh? lol
>
> but on a V6 the 4/71 at 1-1 would probably be perfect then overdrive
> it a tad if needed for whatever boost is wanted, usually 5-10 PSI at
> running speeds. remember its not a turbo and the boost always is
> constant.
>
>
> the next fly in the ointment is that 53 series rev higher (3200-3700
> rpm)
> normally than a 71 (2100-2400 rpm) so the stock 53 series will probably
> last much longer. remember racing apps. were for big blocks so the 71's
> were used and smaller engines dont need the CFM.
Interesting, I really didn't know too much about the 53/71 series of
superchargers, my knowledge is limited to a small amount for the vortech
that I've got on the shelf.
> a huge plenum area, think of the old "tunnel ram" type manifolds.
>
> you could also sit that blower even w/ top of hood rather than just an
> air
> cleaner sticking out. If ya really got it in there, flaunt it ;P
What would the benefit of having a huge plenum area be? Wouldn't you want
the air to just be force fed more directly into the cylinders?
-- - Josh Lowered 2000 Dakota CC 3.9L www.geocities.com/lenny187/dakota.html
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