1989 4.0

i got a 89 4.0 im wanting to put a cam in not stock cam. could anyone tell me a good cam that will work without changeing everthing else? thanks

Turbo X_J

Save your money, you'll never realize the benefit of a different cam profile if everything else remains the same.

fannitti

putting a cam on a 89xj motor, if its original and never been messed with id be scared that as soon as u pulled the cam that the cam bearings will fall out. that is the reason why i haven't done it to mine. what are you looking to gain? do roller rockers if anything. i have a borla long tube that i will be adding soon. i already have a cowl air intake with ported throttle body and 19lbs 4 spray injectors and with 2 1/4 cat back exhaust and long the performance. roller rockers from what i read will help a little. thats just my opinion other people might not think its good but it works for me good luck hope this helps.

1989 4.0

im just rebuilding it and thought i have the cam out why not just put a bigger one in. im just lookin for thangs to do. i no i really dont want to get into boring it out anti got the money to do that plus buy parts.

Photojared

Do more research. Educate yourself on what cams do and how they affect an engine. Also research supporting mods.

cruiser54

Call Comp Cams and talk with a tech guy.

1989 4.0

alright thanks anyone got any good ideals on cheaper stuff i could do why its out im planing on it takeing most the winter as a winter project thanks

1989 4.0

any one know were a good place is to order a rebuild kit form iam have it bore .20 over soon a i find a good kit and a cam thanks for the help

fannitti

505 performance

denverd1

lots of other mods will give you perf gains. since you've got it apart, you might as well putt a peppier cam in and build the motor around it. '99 intake manifold, high flow intake filter and intake, bigger exhaust at a minimum. injectors, ported throttle body and head work would also be on the list. roller rockers of the same dimension wouldn't change anything either; maybe cut some internal rotating resistance. Negligible gains.

doing the cam alone will not get you anything. stock cam works fine for stock motors.

1989 4.0

ok i got the motor .30 over i need a new cam can anyone help me out i been looking reading and been thanking about mopar 240/240 cam but i dont no what will work with a stock motor im geting new lifters and prush rods and double roller timeing chain just need help on a good cam thanks

cruiser54

Check out Comp cams.

MImudmonster

do you have a low axle ratio and want more top end, or does it have good highway and need more grunt

1989 4.0

its more just a toy i had it apart and rust started on the old cam so i just need a new one and upgrade it not lookin to build a race car i have read and read and for some resson i cant figure out what the best/good cam is to go with

Jeep Driver

http://www.summitracing.com/parts/DCC-4529228AD/