07-18-2007, 03:10 PM
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CC Member
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Join Date: Apr 1999
Location: cleveland,
OH
Cobra Make, Engine: CSX4000, 427
Posts: 1,999
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Not Ranked
Quote:
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Originally Posted by dynoroom
More torque.... LOL...
Sorry.
400 lb/ft would be about 450 hp & 450 lb/ft would be close to 515.
The real question is how do you get that torque from the 350 you have now?
There's no magic wand.
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Quote:
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Originally Posted by Dwight
OK Sal
I need the peak torque at 5800 rpm. How do I get it there? Cam? Which one?
Dwight
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The way I see it, any naturally aspirated engine can only take in so much air/fuel per revolution, which directly impacts on the torque generated. If your engine is generating 1.4 ft-lbs / ci (measured at flywheel), I would say that the engine is operating pretty efficiently. Therefore, max torque is limited by engine displacement. The only way to increase it significantly beyond this is with a power adder.
Horsepower is work/time, or the amount of energy delivered over time. As your car accelerates, it accumulates kinetic energy, 1/2mv*2 , derived from the horsepower delivered.
You can make any engine deliver max torque @ 5800 rpm's with the right cam, but if your intake, heads, exhaust are not up to snuff, then even though your max torque may be at 5800 rpm's, it may be a low overall value.
Your question should be - How do I make my engine make a lot of torque, with peak torque at 5800 rpms?
My suggestion would be to go to a local race track, find out the engine builders who build the winning engines, and take your car to them for suggestions.
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"After jumping into an early lead, Miles pitted for no reason. He let the entire field go by before re-entering the race. The crowd was jumping up and down as he stunned the Chevrolet drivers by easily passing the entire field to finish second behind MacDonald's other team Cobra. The Corvette people were completely demoralized."
Last edited by Anthony; 07-18-2007 at 03:16 PM..
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