horsepower/torque
Alot of the hp/tq ratings you get are motor ratings. The factory lab pumps cool water and cool air into a given motor on a standand records the outcome. That's why alot of these "Hemi club dyno days" wind up in shear dissapointment with everyone crying in thier beer. You buy a new hemi and the salesman tells you it's got 340 ponies, but fails to mention that- that's before the wheels hit the ground and our torque management takes over. Do a search on it. The sad thing is that when DC reports the lab findings; i.e. 347 @ 5650 , they don't let thier vehicles shift anywhere near there. The truck that I own now will be the last automatic transmission vehicle that I ever buy for personal use.
If your truck is stock and is rated @ 220 hp, then you should expect about 20% less in the most ideal of situations on a dyno. RWHP that is. Maybe around 176hp. That's what all these "new age hemi" guys are finding out. It's exponential. They' dynoing @ 240-270. The real Hemi's rocked because they had flat tappets and were rolling upwards of 6000. That's where you benefit from the increase involume in a true hemispherical head, high rpms.
If your truck is stock and is rated @ 220 hp, then you should expect about 20% less in the most ideal of situations on a dyno. RWHP that is. Maybe around 176hp. That's what all these "new age hemi" guys are finding out. It's exponential. They' dynoing @ 240-270. The real Hemi's rocked because they had flat tappets and were rolling upwards of 6000. That's where you benefit from the increase involume in a true hemispherical head, high rpms.




