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underdrive pulley question?
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TECH Senior Member
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Joined: Apr 2006
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From: Western Burbs of Detroit
If you are considering an Underdrive Pully for power, could you reconsider?? Not much of a noticeble power increase at all. I did AFR 205's 59cc heads, Meziere EWP, and ASP ud Pully all at once. I picked up 70 rwhp. I would say 10-15 came from the pully and the ewp. The good news is, I may not have made 20 rwhp from the pully and pump, but I did pick up about 4-6 more mpg on the Expressway. May sound hard to believe, and call BS if you like but I made the 1200 mile trip from Texas to Michigan on 2 full tanks. When I pulled into my driveway I still had gas left. On the way down I had to stop and get a 3rd tank. Showed up at LG with a little over 1/2 a tank to do dyno testing with after the new parts were installed. Pully alone should give you 2-3 mpg improvement. Just make sure you use the cruise control and set it around 80. Thats what I did and I couldn't believe that I drove over 8 hrs before I needed to stop and get gas. Gotta love the open highway sitting behind the wheel of a C5. Results may vary on a non C5 application. Good luck!!!!!!!!!
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Originally Posted by davered00ss
You also need to change the front crank seal or it will leak.
Originally Posted by ShevrolayZ28
Then, once you have the timing cover off, you may as well throw a cam, oil pump, and timing set in it.
Thread Starter
TECH Enthusiast
iTrader: (3)
Joined: Nov 2005
Posts: 642
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From: San Antonio,Texas
its crazy how easy it is to work on these ls1!! i funny how people charge unbelieve prices, i think im gonna go with the underdrive pulley after all! after that for sure ls6 cam install right after that! i want more a sleeper car then a loud cammen car, dont get me wrong i live the high lift **** but i wanna sleeper!!
Here is a link to one of our sponsers pages. Texas Speed has the belts for not so bad price, and some of the other sponsers have the belt included in the price, do some searching on the right of the differnt places you can get stuff from.
Link http://www.texas-speed.com/shop/cate...MID=1&catid=16
Link http://www.texas-speed.com/shop/cate...MID=1&catid=16
