For what ever it's worth. Pro Stockers have bores in the 4.5" to 4.6"
range I believe. Relatively short strokes for a big block. Not sure what R/S
ratio (Dave do you know)? Seem to run 9000+ RPM without detonation. Perhaps
part of that success is in the combustion chamber design?
John Beckett
----- Original Message -----
From: <ardunbill@webtv.net>
To: "Jane McMeekin" <jmcmeekin@worldnet.att.net>;
<land-speed@autox.team.net>
Sent: Thursday, October 19, 2000 4:59 PM
Subject: Re: Bore/Stroke Ratio
> In the motorcycle racing world, there is a continuing trend to
> ever-shorter strokes nowadays, since the shorter the stroke, the lower
> the piston speed, and the higher the revs without excessive piston
> speed, the higher the horsepower. Big bores also allow bigger valves,
> but on the other hand, the bigger the bore, the greater the tendency to
> detonation. According to the authorities I read. Always a lot of ifs,
> ands and buts about it.
>
> Cheers from ArdunBill in the Great Dismal Swamp, Chesapeake, VA
>
|