I definitely agree a quick compression check would help tell your in a good position to make changes. That being said I'd be very surprised if you had any issues, we've seen well past 160k mile heads cam cars before! One time I had a truck show up that just had a sts turbo kit installed on it with over 240k miles on the odometer!! It made very compareable numbers to the other turbo 5.3l trucks I've seen come through here!

 

Come on that is petty that's is why i put at the end

"all I feel they are good for."

1 tenth and 1 mph can be made up in tuning, rear gears, intake manifold, there are plenty of ways to come up with that not just a pulley and I think you can agree with that.

In my experience and it is my experience with a 25% under drive pulley my car ran hotter. I went back to the stock pulley the car ran cooler and the loss of what ever was insignificant enough that i did not feel the need to put it back on.

Last I remember a person could still have an opinion and it still be ok to voice it.

 

I've consistently seen people pick up 7-10rwhp with a 25% pully. A Pully is a very popular bolt-on that is well worth the money. If it's already off why not pick up some extra rwhp. I've had and drove many cars with underdrive pullies and never noticed a temperature change. Not that it's not possible, its just not likely to happen. The only negative I've ever seen with an UDP is if you have subs, amps, or a bunch of aftermarket electronics draining more power than the alternator can recharge with the decreased pull on the alternator. Of course that can be easily fixed with a simple alternator overdrive pully.

 

Feel free to voice your opinions. But don't get butt hurt when people call them incorrect, because they are. To say an underdrive pulley is a waste of money, doesn't work, etc....Is wrong.

I guess shops like Vengeance, Texas Speed, LG, Virginia Speed, myself, etc...should all just quit using pulleys based on your opinions. Is this correct? If they're a waste, don't make any power, and make cars run hotter I guess we need to start yanking them off the shelves.

 

I'm not sure if I'd go with a pulley or not yet. My Stocker is getting kind of chewed up but I have an amp and some other electronic stuff in the car, I'd have to get the Alt pulley as well.

I did some searching around today for a place that rents out the Cylinder leak down tester. I went to all the major stores: Advanced, Auto Zone, napa, carquest, Lee, etc.. So tomorrow on my lunch I am going to run up to Harbor Freight and get one from there providing they have them on hand. I'll probably grab a vacuum guage and compression tester while I'm at it. And hopefully I can get out of work on time.

 

roger that

 

How many Watts is your amp and subs rated at. If your system isn't that big the alt pulley may not be needed.

 

Its a Polk 600.1 Running 300W rms at 4 ohm. Also have a small alpine powering my MB Quarts, maybe 75-100W rms, and a 5V power supply to power up my USB hard drive.

My stock alt went out a while ago, before the stereo stuff, and I went thru about 3 replacements until one has help up. I'm not sure if I want to stress it too much.

The alt pulley is only like 25 bucks so thats not too bad.

 

True, better to be safe than sorry.

 

my car has 180k and still running great with full bolton's and hot cam and iam trying to change and put ls2 timing chain and put 243' heads hopefully it would hold up for aleats 5 months more . Every oil change i put a compression restore lube so it can clean and raise compression.

 

Well guys, problem solved.. I ordered an LS6 long block today.

Anyone wanna buy a slightly used LS1?