So then my decision to use a 6800 RPM red line
once I get the Dart heads should be agood choice,
no?
Dick J
--- DOUG ODOM <popms@thegrid.net> wrote:
> Dick; 4000 ft.min with a 3.48 stroke would be
> 6900 RPM.
>
> Dick J wrote:
> >
> > How may RPM does 4000 Ft. Min produce?
> >
> > Dick J
> >
> > --- DOUG ODOM <popms@thegrid.net> wrote:
> > > Dick; 7500 will give you a piston speed of
> 4350
> > > ft.min. Stroke (inches)
> > > X 2 X RPM / 12 . That is OK if you have
> forged
> > > pistons and steel crank
> > > with good rods. Anything over 4000 ft.min.
> with
> > > stock parts is scary.
> > > Now I'm not going to tell you that I have
> never
> > > built a dyno grenade
> > > with lots of stock parts just to check some
> > > wild idea I had. I would put
> > > in a cam that made power in the 6500 range.
> You
> > > can run it past that in
> > > the gears getting up to speed because you
> shift
> > > back to a lower RPM so
> > > quick. I can give you a list of cams we
> have
> > > used that fill that
> > > bill. Doug Odom in big ditch
> > >
> > > Dick J wrote:
> > > >
> > > > So if I read this right, once I get some
> Dart
> > > > heads and a good cam kit, 7500 should be
> my
> > > > absolute redline. Obviously, I'd be
> safer at
> > > > 6800-7000?
> > > >
> > > > Dick J
> > > >
> > > >
> > > > --- DOUG ODOM <popms@thegrid.net> wrote:
> > > > > Dick; Rev limit is determined by the
> stroke
> > > > > and piston design in the
> > > > > lower end. My E motor with 2.7 stroke
> at 9
> > > > > grand has the same piston
> > > > > speed as a 3.48 stroke ( 350 Chevy) at
> 7500
> > > > > rpm. Valve float or bounce
> > > > > is the Rev limiter in the top end of
> the
> > > motor.
> > > > > It would do you no good to build
> a
> > > motor with
> > > > > a roller cam, rev kit,
> > > > > and Titanium valves, then put the heads
> on
> > > a
> > > > > block with stock cast
> > > > > pistons and crank. You can only go as
> fast
> > > as
> > > > > the weakest link will let
> > > > > you go. You might go around to the
> local
> > > roundy
> > > > > round track and talk to
> > > > > who builds the good motors for them.
> They
> > > have
> > > > > to live and make horse
> > > > > power. Doug Odom in big
> > > ditch
> > > > >
> > > > > Dick J wrote:
> > > > > >
> > > > > > Not knowing a lot about Chev small
> > > bolocks, I
> > > > > set
> > > > > > a self-imposed red line of 6200. I
> did
> > > wind
> > > > > it
> > > > > > right to 6200 on my last run, and
> that
> > > limit
> > > > > > still managed to put me into the
> record
> > > book,
> > > > > but
> > > > > > I'm wondering what a reasonable
> red-line
> > > > > should
> > > > > > be. I don't want to be breaking
> motors,
> > > but
> > > > > I
> > > > > > do want to see what it can do. This
> is an
> > > > > > all-stock Chev 350, 4 bolts, stock
> > > rockers
> > > > > and
> > > > > > springs in 882 (76cc) Chev head
> castings,
> > > > > flat
> > > > > > top pistons, and a cam that specs out
> at
> > > 260.
> > > > > My
> > > > > > plan for spring is to install an
> electric
> > > > > water
> > > > > > pump and electric fan. The motor
> would
> > > have
> > > > > > wound just a little more this year,
> but
> > > with
> > > > > > those changes, it will hopefully have
> > > just
> > > > > enough
> > > > > > more power to allow a little tighter
> > > winding
> > > > > > (valve train permitting, of course).
> What
> > > do
> > > > > you
> > > > > > guys think the max RPM for that motor
> > > should
> > > > > be?
> > > > > >
> > > > > > =====
> > > > > > * * * * * * * * * * * * * *
> > > > > > * Dick J *
> > > > > > * (In East Texas) *
> > > > > > * # 729 *
> > > > > > * C/GRS C/FRS D/STR *
> > > > > > * * * * * * * * * * * * * *
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
__________________________________________________
> > > > > > >From homework help to love advice,
> > > Yahoo!
> > > > > Experts has your answer.
> > > > > > http://experts.yahoo.com/
> > > >
> > > > =====
> > > > * * * * * * * * * * * * * *
> > > > * Dick J *
> > > > * (In East Texas) *
> > > > * # 729 *
> > > > * C/GRS C/FRS D/STR *
> > > > * * * * * * * * * * * * * *
> > > >
> > > >
> > >
> >
>
__________________________________________________
> > > > Do You Yahoo!?
> > > > >From homework help to love advice,
> Yahoo!
> > > Experts has your answer.
> > > > http://experts.yahoo.com/
> >
> > =====
> > * * * * * * * * * * * * * *
> > * Dick J *
> > * (In East Texas) *
> > * # 729 *
> > * C/GRS C/FRS D/STR *
> > * * * * * * * * * * * * * *
> >
> >
>
__________________________________________________
> > Do You Yahoo!?
> > Thousands of Stores. Millions of Products.
> All in one Place.
> > http://shopping.yahoo.com/
=====
* * * * * * * * * * * * * *
* Dick J *
* (In East Texas) *
* # 729 *
* C/GRS C/FRS D/STR *
* * * * * * * * * * * * * *
__________________________________________________
http://shopping.yahoo.com/
|