hey guys my buddy has a set of 1.6rr's for sale for $100 full roller rockers- i was wondering how much they will really help on my set-up- stock 4.3L with 11psi through a 60trim.

he said 10 to 15whp but im skeptical- is this right should i buy them?


also what will they do to the idle?

 

That's a steal as long as they aren't a cheap brand like proform or something. Look at them to make sure they have needle bearing pivots.

Dave

 

will they really give me 10 to 15whp gain? not to familiar with valvetrain all i know is that they make the cam think its bigger

 

you will need guid plates for them unless they are self guiding rocker arms