i wanna install an underdrive pulley in my 98 z will i have to get a different belt

 

short answer...yes.

i believe tsp has the belt needed, otherwise a quick search will work for a part number.

 

can i purchase it at any retail stores; oreillys,autozone,pep boys?

 

like 20 bucks....get the alt pulley while your at it to

 

will i feel a difference in performance wise>

 

I would go with something else other than pulleys.

 

get one off of ebay because i dont really feel like there worth 200 bucks but you can get that for half that....its on avg. 7rwhp-10...

 

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!!!!!!!!!

 

yes you will have to get different belts...when i got mine they sent a paper with the part numbers for new belts.

 

You also need to change the front crank seal or it will leak.

 

Then, once you have the timing cover off, you may as well throw a cam, oil pump, and timing set in it.

 

Might as well do the heads while we are at it.

 

you can get the good belts at oriely's they are in a green package as i have been told....i noticed a huge sop after i put mine on the tac actually move at a somewhat decent pace

 

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

 

you can get the gatorback belts from autozone, with just crank pulley part #'s 4060760 and ac part # 4040377 .

 

is it worth the money for this mod?

 

SLP has thier on clearance right now..I just ordered one for mine last week.

 

Yes smaller belts, and a 6 to 8 rwhp gain. See if you can find yourself a used one.