xtturbo

ok..i changed my roller rockers..i put the stock rocker arms back on...i had a bad vibration in the motor befor i did this. i changed the balancer and it still had a vibration,but not as bad. i just fired up the car with the stock rockers and it runs alot better..more crisp when i hit the gas, vibration gone and the sound is incredible, have the flowmaster american thunder with 2.5 all the way out with bbk long tube headers, no cats. im stumped, but im happy now. and also the roller rockers i cant move by hand,they are grooved on the bottom..is this normal? i had the pro comp 1.6 pedistil mount. should they of been shimmed?...or do they all do that?

5.0stanger

sounds like they wore out, maybe you got a bad batch or you have them way over tight, but I don't think you could have them that tight. At least you got it figured out. How old were they?

xtturbo

they had 500 miles on them

xtturbo

could they of put the rocker arms on wrong?...people that i had build my motor told me they put a svo .512 lift cam in it...when i went to pick it up and heard it run..i told them that it sounded stock...they told me a svo cam sounds stock...is that true?...anyways ...i took it to another guy and had the .499 cam put in it,,,it lopes now...sounds nasty

xtturbo

all yo u pros out there???? you aint never heard of rocker arms causing a vibration in the motor?...

Boss_Hotrod

Ive heard of rockers making a grove/set in the valve that will cause noise if they are chagned. Probably if you replaced your rockers and fixed the valves you wouldnt have the noise/vibration.

myshifter

ya cheap garbage pro-comp im not surprised they use the same casting body for the small block chevy as the small block ford. JUNK but people want to buy cheap crap, thats what ya get.