underdrive pulley system
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Joined: Dec 2007
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From:
RE: underdrive pulley system
nice so your clocking like about 23.8 to 24.4 mpg? (oh yeah that was done via brain power, Hahahaa) What temp and Oct level are you running? Just wondering cuz I was experimenting with my wife's 06 Corolla a few weeks back with mpg ratings when in CA with lower air temps vs. AZ and higher elevation and thinner air. I know the concept and formula works out, but with a larger block and heavier truck, does mathmatics and physics correlate??
All Star
Joined: Nov 2007
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From: Dirty Jerzey
RE: underdrive pulley system
ORIGINAL: Destructicon
Its worth it man. Frenchy was giving me **** the other day for having 3" pipes on my Kota and losing out on TQ. After all my mods, my truck jumps when I command it too. Of course lots of variables involved such as fuel type used and even air temp, but I would not do anything else to my Kota except go extremes and port/polish, S/C types. But why do that to a daily driver. To prove a point, I average 18.8 mpg in 116deg AZ weather w/85oct during the summer. Even better mpg in the winter.
Its worth it man. Frenchy was giving me **** the other day for having 3" pipes on my Kota and losing out on TQ. After all my mods, my truck jumps when I command it too. Of course lots of variables involved such as fuel type used and even air temp, but I would not do anything else to my Kota except go extremes and port/polish, S/C types. But why do that to a daily driver. To prove a point, I average 18.8 mpg in 116deg AZ weather w/85oct during the summer. Even better mpg in the winter.
Professional
Joined: Jul 2006
Posts: 189
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From:
RE: underdrive pulley system
I remember reading that 27 ft/lb claim back when these were back ordered/couldn't order one. Doesn't that torque gain sound optimistic to anyone else? [&:]
Either way to those who got one- is the big harmonic dampener still on the pulley? Is it significantly lighter? We were going to build some out of aluminum, but were alittle worried about harmonics...
Either way to those who got one- is the big harmonic dampener still on the pulley? Is it significantly lighter? We were going to build some out of aluminum, but were alittle worried about harmonics...
Record Breaker
Joined: Aug 2007
Posts: 1,041
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From: Central NY
RE: underdrive pulley system
The 4.7 pulley should be a direct bolt on for the 3.7L as well, correct? The serpentine belt on my truck says 3.7/4.7, and I've heard that the front of the motors are the same.
Anything around 20 FT-LB for a 3.7 engine would be huge! 255 FT-LB, thats starting to sound respectable.
***EDIT***
I see that P/N 501150 can be used for 99-03 Ram 3.7L's, so I'm taking that as a 'yes' for us 3.7 Dakota guys too.
Anything around 20 FT-LB for a 3.7 engine would be huge! 255 FT-LB, thats starting to sound respectable.
***EDIT***
I see that P/N 501150 can be used for 99-03 Ram 3.7L's, so I'm taking that as a 'yes' for us 3.7 Dakota guys too.
Record Breaker
Joined: Dec 2005
Posts: 2,147
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From: Winter Garden, Fl
RE: underdrive pulley system
ORIGINAL: Dusty
I remember reading that 27 ft/lb claim back when these were back ordered/couldn't order one. Doesn't that torque gain sound optimistic to anyone else? [&:]
Either way to those who got one- is the big harmonic dampener still on the pulley? Is it significantly lighter? We were going to build some out of aluminum, but were alittle worried about harmonics...
I remember reading that 27 ft/lb claim back when these were back ordered/couldn't order one. Doesn't that torque gain sound optimistic to anyone else? [&:]
Either way to those who got one- is the big harmonic dampener still on the pulley? Is it significantly lighter? We were going to build some out of aluminum, but were alittle worried about harmonics...
Professional
Joined: Jul 2006
Posts: 189
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From:
RE: underdrive pulley system
ORIGINAL: turbot_bird
I wouldnt mess with the balencer unless you where going to have the crank balenced.
ORIGINAL: Dusty
I remember reading that 27 ft/lb claim back when these were back ordered/couldn't order one. Doesn't that torque gain sound optimistic to anyone else? [&:]
Either way to those who got one- is the big harmonic dampener still on the pulley? Is it significantly lighter? We were going to build some out of aluminum, but were alittle worried about harmonics...
I remember reading that 27 ft/lb claim back when these were back ordered/couldn't order one. Doesn't that torque gain sound optimistic to anyone else? [&:]
Either way to those who got one- is the big harmonic dampener still on the pulley? Is it significantly lighter? We were going to build some out of aluminum, but were alittle worried about harmonics...