billy icon
test pilot,gunnie pig, and all around experiment
all i can say is wow. there is some brain power going on here
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http://www.vft.org/Men-Machines/ShellNumbers/ShellFrameNumbers.html
http://full-frokkul.blogspot.com/2010/02/shell-racing-specialities.html?m=1
Found an old catalog from 1975 but don’t see the specs.
http://full-frokkul.blogspot.com/2010/02/shell-racing-specialities.html?m=1
Found an old catalog from 1975 but don’t see the specs.
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Well ended up purchasing the camshaft so we shall see.
Sounds like a regrind.
447 specs.
Shell #1 specs.
On that lift plot, each horizontal gridline is 0.010"...
Amazingly, I timed the megacycle 250-40 cam I have up this year, and my unrecognised cam outperforms it , I am about 5mph down and at least 0.25 seconds over the quarter, whilst the timing can be what happens on the day, terminal speed is normally a constant unless I really stuff it up.
The 250-40 is retarded by 4 degrees as everyone says is better, the unrecognised cam just gets put in on the timing marks as there is no data to go by.
The 250-40 is retarded by 4 degrees as everyone says is better, the unrecognised cam just gets put in on the timing marks as there is no data to go by.
Just bought a shell #3 cam and got the timing information for it from Gary Hoos the duration on the exhaust is virtually the same as my cam even the opening and closing times
