I just orderred a set of pulies from Summit. I am on only going with the crank pully because I do nto want any charging issues. With my current mods and best ET of 15.59 on the 1/4, What can I expect after I install them. Thanks in advance.

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A 1/10 in the same conditions(humidity and temp) .

 

You may go 15.58... <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

 

I've heard they're good for .1 - .15 drop. Do you have a 5.3 or 4.8?

 

I have a 4.8l. </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> You may go 15.58</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">MR.MIX, you got to be kidding. I was hoping for a .15-.2 drop.

 

Yeah I'm jus pullin your chain man...You may gain a tenth or two.Don't expect to feel a difference you will be disapointed if you do.

 

I went to Coleman Autoplex in Gatesville today to get a new harmonic balancer bolt and the guy at the desk said I didn't need a new one. He said they reuse them all the time. I told him I was concerned about the threads since they had 250 lb/ft of torque on them, he said the bolt is so much bigger than the old ones that it doesn't matter. Then he called in one of the techs and he said the same thing. They have never had to use a new bolt on a 4.8/5.3. He looked at the threads and said they were ok. I guess I will just reuse it. I hope they are right. If my pulley flies off one day when I'm racing and puts a hole in my hood I am going to be pissed. <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" />

 

you should be fine ..... just use good amount of locktite <img border="0" alt="[Truck]" title="" src="graemlins/gr_truck.gif" />