underdrive pulley?
#1
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underdrive pulley?
ok im just wondering do underdrive pulleys actually increase your gas mileage at all? also would one cause any type of towing problems? electrical wise?
#2
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I don't know about the mileage. It may increas a little, but I wouldn't expect more than 1 or 2 mpg. As far as towing I can't see why it would cause any problems and it is ussually a good idea to get the overdrive pulley for the alt so the electrical system will work properly at idle.
#4
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Pulleys
I would look into ASP Pulleys or go to rpmoutlet.com and get the motoblue set for $250 bones. My bud in Michigan put a set on his 93' c/k and noticed a difference in towing and under hard accelaration. I will be getting a set for mine soon. Be sure to get a good belt too. Goodyears gatorback is a great one. Just remember, you get what you pay for so do some research. When you get one installed tell me if you noticed anything?
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#10
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I don't have a dyno sheet but I had a ASP underdrive on my truck and it was more responsive. When I removed it I noticed the throttle response decreased a bit. Also when I took it off I lost probably 1/2 mpg. I didn't do the overdrive alt pulley and the truck has the factory HO alternator 160amp or something like that. Anyway with the 6HI conversion at idle I would only drop 1/2 a volt and the lights wouldn't dim at all.