So I can get a set of mopar performance roller rockers like super dirt cheap brand new. Will they work with a stock valve core no spacer needed?

 

If they are adjustable, you will need a spacer.
Nonadjustable fit without spacer.

 

thank you so much! ill prob go with 505 performance ones. anyone know another brand thats good that will fit under stock valve cover with out a prob?

 

yella terra supposed to fit without spacers, but they aren't adjustable

http://store.yellaterra.com.au/jeep-...io-1-6-yt6627/

 

YT 1.6 and 1.7(if you can find these) non-adj fit
Harland Sharp 1.6 non-adj fit

 

What brand is better and why do you say if you changin them?

 

I have them both, YT hard to find, HS available at summit/jegs/ebay.
Both work fine.

 

How much gain did you feel? Been thinking about it, but haven't done it

 

1.6- smoother, quieter, slight improvement in rpm range.

1.7- big improvement, smooth, quiet, more power, extended rpm about 500rpm, instead of the engine falling flat on it's face at 4000rpm it pulls to 4500-4600. Best with 62mm TB and headers and 2.5" exhaust and free flowing intake. Acts like a mild cam, works with stock valve springs.

I had HS build me 2 sets of 1.7:1 but they are expensive, like $500/set. Easy to install, less than 2 hours.

 

http://www.summitracing.com/parts/csp-s40196/overview/ these?

 

YEP.

 

Cool thanks.if I did the the mopar ones and had to get a spacer I'm guessing my cowl air intake wouldn't work because it comes over the valve cover

 

Also can't find any 1.7 ones.