desktop dyno'd 545 project cam question
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From: fargo, nd
desktop dyno'd 545 project cam question
i just got a desktop dyno program to run my 545 on, and im thinking maybe i should go more conservative on the cam on it... the powerband is from 2000-5200 rpm- torque is between 550 and 590 all through those numbers but drop sharply outside of that range- and horsepower peak is 550 at 5500 rpm and is very sharp, which it would probably never see without a manual tranny or manual valve body for the c6. what do you all think? think a lower rpm power band would be better for a relatively conservatively driven stroker? or should i just stick with the plan?
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Joined: Nov 2001
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From: Escondido, CA
Remember this one fact, HP will not move you. Torque is what moves the truck and HP helps to sustain it. I get strange looks everytime I explain my engine has more TQ then HP. Most of the younger guys always argue it until they are blue in the face. Then when we compare actual performance they still scratch their heads. So I would stick to the actual plan for more TQ.
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From: Fort Worth,Texas
What cam are you using? Have you built it yet?
I am interested as I am building a torque motor and plan on using Lunati #61600 I haven’t gone with a stroker kit yet and I think I think it should get near 525 lb torque at 2000 and about 375 hp at 4500.
Bill
I am interested as I am building a torque motor and plan on using Lunati #61600 I haven’t gone with a stroker kit yet and I think I think it should get near 525 lb torque at 2000 and about 375 hp at 4500.
Bill
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From: fargo, nd
the cam is crane cams #359351. its a hydraulic roller retrofit. im debating getting #359341 instead, but i think im going to stick with the bigger one... a little more detonation resistance, and at just shy of 13-1 compression, ill need it, even running propane 
i just ran #359331 (the smallest one) and if i could get by without detonation its got pretty much the perfect powerband... 500 ft-lbs at 1000 rpm, peaks at 670 ft-lbs at 2500 rpm and doesnt drop below 500 until 5200 rpm... now thats a powerband
oh and its still 550 horse peak- at 5000 rpm
i just ran #359331 (the smallest one) and if i could get by without detonation its got pretty much the perfect powerband... 500 ft-lbs at 1000 rpm, peaks at 670 ft-lbs at 2500 rpm and doesnt drop below 500 until 5200 rpm... now thats a powerband
oh and its still 550 horse peak- at 5000 rpm
Last edited by darrin1999; Feb 14, 2007 at 01:19 AM.
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