Who wants to play
#112
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Joined: Jul 2004
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From: chicago
I will say, this is just a computer program, I wouldn't take anything here as "gospel" so to speak, when it comes to camshaft choice.
I have a separate cam design software program, the "controlled induction" , that some engine builders utilize, and I know for sure, one of the "custom" cam sales guy is now using since it came out this year.
That program, for tims combo, suggests a 255/260 cam, for tim's engine, seeking 6000RPM max power. For 5500RPM max power, it suggests a 242/246. Pretty much EXACTLY what we saw on the dyno, with his 241/246 cam. It was about dunzo at 5500rpm.
I have a separate cam design software program, the "controlled induction" , that some engine builders utilize, and I know for sure, one of the "custom" cam sales guy is now using since it came out this year.
That program, for tims combo, suggests a 255/260 cam, for tim's engine, seeking 6000RPM max power. For 5500RPM max power, it suggests a 242/246. Pretty much EXACTLY what we saw on the dyno, with his 241/246 cam. It was about dunzo at 5500rpm.
#114
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Joined: May 2009
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From: Chicago, IL; Onekama, MI
The first and second column has the flywheel hp and torque, the thrid and fourth have wheel hp and torque. Just ignore the third and forth column!
#116
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From: rock Island wa
#117
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From: chicago
Actually, the builder that dyno'd tim's engines, built a set of 540's using those 290's, with a crane "651" cam, not long before tims went on the dyno. He pulled the dyno sheet from that build, and overlayed it against Tim's. From about 3500rpm, to 6000rpm, it kicked tims combo's azz. Made 670ish hp if I recall, and better mid-upper rpm torque. Below 3500, tims actually made a little more torque, which you wouldnt think with the 290's vs the 325's.
#118
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From: rock Island wa
#119
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From: chicago
Especially when you're a dork, and sit on your computer playing with cam and engine software for hours and hours. It would take me a month to try and do what I did here, on my laptop.



