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jman · 10-12-2008, 04:35 PM

you might want to be careful with the cooling system especially if your 4.0 is newer than a 2001 i have heard that the newer heads are prone to warping. i am not being a nay sayer just keep close tabs on the temp guage.

10-12-2008, 04:35 PM	#128 (permalink)
jman EcoModding Lurker Join Date: Oct 2008 Location: OH Posts: 9 88 comanche - '88 jeep comanche sport Thanks: 0 Thanked 0 Times in 0 Posts	you might want to be careful with the cooling system especially if your 4.0 is newer than a 2001 i have heard that the newer heads are prone to warping. i am not being a nay sayer just keep close tabs on the temp guage.