im thinking about gettin these *jegs part # 249-1413-12* is there anything in the same price range that will produce more power? also if anyone has installed them can you tell me the process you went through? this would be my first time installing them, but i feel confident in doing it if given proper directions. thanks!

 

This is one of the hardest motors to set the rockers if its a MPFI and it has milage on it. Why? because the lifters will be worn (springs can be alot more collapsed that fresh new lifters) and when you try to set them with the motor off, its hard to get a "feel" on them when they are old. It is best to run the motor while setting them so you can here them "click" then just tighten them down one by one until each individual clicking rocker goes away- usually about 1/2 to 3/4 extra turn after the click noise disappears.

The clencher with this motor is the tight 60* design crammed up under the MPFI. "Rocker adjustment oil retainer clips" will not fit on the motor running and you'll have an oily mess dripping right on your exhaust manifold. So Its best to set them with the motor off- but only if your motor isn't old and worn.

I used the kit # CCA-RP1413-12 aprox $150 @ Summit. It included new hardened pushrods matched to the rockers. The new pushrods very close enough to the stock length rods but where stronger.

 

The Haynes 82-92 Camaro (or Firebird) manual has the procedure.

 

Why would you need stronger pushrods unless you were goin to be running pretty high rpms a lot?


Tom: maybe you should consult a psychaitrist (spelling?), I don't know if its healthy to be posting at 4:50 in the morning j/k

 

Says on mine 11:50pm?

Don't go roller tipped. Either go stamped (Cheap) or Full Roller (Best)

 

Stronger pushrods have stronger tips- less wear under greater forces of ratio rockers- Granted they really are too nescesary with 1.52 rollers- but they still will last longer and keep closer tolerances over time. With high lift cams, dual spring pressures and mostly high ratio rockers- the forces start mutiplying fast.

 

read it bout 3 times, i don't understand if i would have to take off the intake manifold? can you reach all the bolts w/ out taking it off? also it's pretty brief on explaining how to put on the rocker arms.

 

On a stock MPFI their are 3 pieces of intake manifold- (Upper plenium, middle runners, and lower base intake) The manaul call for the removal of the upper and middle only in order to get the valve covers off. Form that point you can reach all of the rocker adjustment studs.

 

its a whole lot easier with the intake manifold off though...you can see the lifters and what position they are in.

 

It's much less work to just set the motor at TDC on #1 and go from there like you are suppose to. Even with things completely pulled down for lifter inspection- you'll still have to spin the crank settings to the proper marks for rocker adjustments- Its alot more work and kindof pointless just to see lifters for setting rockers.