DrDale

Thanx Moses....You helped make my decision a tad bit easier ! I will decide which Comp Cams to use after one last E-mail to them as far as 252 vs custom grind COP cam..... I'm a "General" Master Auto Tech of 37 years and still going strong, not willing to make repairs to my own vehicles without some kind of performance increase. Yep...I'm a hot rodder,grease monkey,drag racer,mud bogger,hill climber,road racer,nascar,....anyway you look at it I'm an.......Auto Enthusiast and love my Jeeps.....! Thanx Again for the great help , Dr.Dale

Same problem here with cam listings for E.F.I. and the 4.0..... Comp cams shows the year ending in 1997. My engine is 1998 and is basically the same as 1997. These are distributor ignitions with fuel injection compared to the later coil pack over plug engines.In an E-mail to Comp Cams to ask what they recommend for my application ,they replied with this....." We have a cam that we grind for that to work with the fuel injection. The lift is 435/448 so it will work with the stock springs also. The duration is 255/263 advertised and it has a 113 lobe separation."....I trust Comp cams and have used them many times over the years. The problem is a few other forums on this subject say that cam is for the later 99-05 ? coil over plug engine...? I'm now waiting for a reply from Crane Cams about their listing for the efi 4.0.....the number is 753901....lift 456/484 duration 260/272 112 lobe separation. The listing says exactly what I'm looking for which is 2200-2600 cruise rpm and stock compression ratio. http://www.cranecams.com/40-41.pdf My questions to Crane....will the listed springs work with stock retainers? and when they mention for Fuel injection I assume they are talking about factory bone stock efi,computer and ignition...? Bottom line in my case is this.....While freshening up the valvetrain in an otherwise mechanically sound engine, I'd like some extra performance and fuel economy at highway speeds and medium towing without extra mods.and expense.....