Roller rockers?
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From: Oklahoma City, OK
Roller rockers?
I was looking at some roller rockers in a magazine today. I have an 88 GTA with the 350 TPI motor. I don't want to turn it into a race car, but a little more power wouldn't hurt! I don't want to run a bigger cam shaft either. Too shaky for me. Would roller rockers add a little power in my car? Thanks for any info! Matt
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From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
With 1.6 ratio roller rockers you will gain maybe 10hp, you will not even notice the difference.
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Refueler,
Changing ratio will increase the net lift by about 6%, and increase effective duration @ 0.075" valve lifts by about 1.5-2%.
What may be more important is the reduction in friction from the roller tips and fulrums of a fully rollerized rocker. That's gotta be worth a few ponies alone. the extra flow from the lift/duration increase is just icing (and not on the wings).
Changing ratio will increase the net lift by about 6%, and increase effective duration @ 0.075" valve lifts by about 1.5-2%.
What may be more important is the reduction in friction from the roller tips and fulrums of a fully rollerized rocker. That's gotta be worth a few ponies alone. the extra flow from the lift/duration increase is just icing (and not on the wings).
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