I swapped in a new cam and timing gears and chain in my Crew cab.What a difference in power.The old chain was so stretched it was slapping the block!I went with a 272/284 degree duration Crane powermax.It idles pretty good and has a ton of power.I went for a test drive and in 3rd stood on it and got sideways quick.It will now leave four good marks for about 6 feet!Just wanted to brag!:flipoff2: Blazin:rasta: