To be fair there really isn't THAT much harm with installing an U/D pulley but it all just depends on the person and what they are using their truck for. I have put a lot of thought into getting an U/D pulley but I just can't get around the $200+ dollars for something that doesn't justify with the increase of HP. An e-fan or headers is a WAY better upgrade for the price.

 

LOL is a 4.7 guy really arguing with a Pack of Hemi's about a mod on a Hemi engine, and using his experience with one on a COMPLETELY different engine as support? This place has not changed in the last 4 months I've been gone lol

 

Yeah, that dirtydog guy just keeps talking about his mustang when everyone else is taking about rams. It doesn't make any sense.

 

hate to tell ya this bud, An engine is an engine. I don't care if it's a 4.7,5.7 or heck even a 350!. they are all pretty much the same principle. I was glad when you were gone so I didn't have to read the endless bashing of us 4.7 guys. just because you "think" that a 5.7 is the best engine since sliced bread. doesn't make you right either!

 

You must have missed the part of my Silverado issue's which were similar to the mustang. That makes 2 vehicles that had issue's.

I don't know how you can argue 20% underdrive doesn't mean 20% less rotation on all the accessories and the fact that it couldn't and wouldnt cause problems??
If you want to argue engine for engine. OP asked about a Hemi. I assume you have a 4.7L which is diffferent.

Also, a crankshaft Only pulley will reduce all components by 20%. You would want to get a 3piece pulley kit which accommodates the alternator and waterpump to allow them to spin slightly faster than the rest so your not depriving cooling and charging as much. I didnt have steering problems with my truck and only on the mustang at idle. All other times was ok.

This thread is going no where.