Originally Posted by Fraser_Brown
Yeah, the only upgrade after that might be front LA's down the road. Did any of the HP30's come stock with 4:10s?
taken from the xj tech forum
3.07 - used with 4.0L engine / manual transmission
3.31 - only available on older (pre87?) 2 door XJs with "Fuel Economy" package
3.55 - used with 4.0L engine / automatic transmission
3.73 - found in some XJs with the towing package
4.10 - used with 2.5L engine usually, and older XJs with the "Off-Highway Vehicle" package.
4.56 - rare but can be found on some older (~ 89 ~) models with 2.5L engine and auto transmission
1997 formerly GREEN
now rustoleum bed lined zj 4.0 np242 bought 9/25/2008 MY 97 4.0 BUILD THREAD
1998 5.9l platnium zj np249 k&n sct bought 4/6/2010 MY NINER BUILD
2007 sahara 2 door wrangler stock bought 02/08/2011
Western Mass 4x4 KEVIN'S OFF ROAD IRON ROCK OFFROAD
Originally Posted by ZJones
You'll learn a lot. I didn't know anything when I first joined this site either. (not sure if that's changed at all :laugh:)