Pretty close.... The Builder is an idiot.... and he didn't know what Pie was
exactly when he asked the question....
305.999 is the Max limit for so i am sitting there doing my math quite
poorly and came up with 305.11 for a 2.85 stroke on a 4.125 bore. you do
the math... you won't be impressed with my results.
Problem is that the 4.125 bore was only avalible stock in a 400 chevrolet
engine. So finding a Perfect.... doesn't need Boring Block is about
impossible. Dart Makes a Block that is capable of going all the way out to
455 cubic inches. and can stand the kind of Pressures I am eventually expose
this motor to with the Turbo's someday. And this Dart Block can be sleeved
if a cylinder is messed up.... My Machine shop guy and I talked about
sleeving a Factory Block and he was dead set against it. (400 only)... So
it's either a Bowtie block or a Dart.
None of this would be really nessesary but the Valves in the 18 degree heads
are the size of a 3lb coffee can...2.170 and 1.65 if you try and stick them
in a Smaller bore you really need to clearence the cylinder wall, and the
valves would still be shrouded. All of this work to stay in the D class.
I have always respected Guys Like Tom and John for running Tiny motors and
going really fast....( Yeah Dave I understand a D motor is the size of
Chicago to you ) Well there you have the tale of why I asked the
question... I was surprise no one called me on the "what in the hell are you
doing to come up with a 305.11)
Keith ( yeah I know I am clueless... and Yes Brad set me straight )
Bottom Line is that I bought a 2.85 stroke crankshaft yesterday.
----- Original Message -----
From: tschoen <j82244@fuse.net>
To: <FastmetalBDF@aol.com>
Cc: <David.Parks@lfr.com>; <lemay@hiwaay.net>; <dwarner@electrorent.com>;
<land-speed@autox.team.net>
Sent: Tuesday, February 15, 2000 6:50 PM
Subject: Re: CHECKING CUBES
> Maybe the builder started out with a motor that was close to the max and
> couldn't spend $2000 for a custom crank or $500 to sleve the motor.Just a
> thought.
> Tim Schoeny
>
> FastmetalBDF@aol.com wrote:
>
> > Hi David , I AGREE 100 + % with ALL you wrote
> > -------- and if
> > those last several cubic inches make such a difference , maybe the
> > builder' s
> > time would be better spent on improving the car's LEGAL aerodynamic
> > alterations
> > or on shooting for a Super Duper tune up that can reap large
rewards !!
> > Also , it is often wise to look ahead a bit to a time when a
slight
> > overbore
> > may be necessary on the block --------- might come in handy !
> > Like the man who cut his belt off next to the very last hole ,
we
> > sometimes
> > realize we should , on certain occasions , learn to
> > CUT OURSELVES SOME SLACK .
> > Bruce --------- too late we
get
> > too smart ---------
>
>
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