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What else can I help you with?
Are the rocker arm studs in a 1997 4.3 Chevy Vortec engine threaded or pressed into the head?
They are pressed in.
What is a factory Rocker arm ratio for Chevy 350 1988 and is it different for a marine than for a auto?
The stock rocker arm ratio for a Gen I Chevy small block is 1.5:1. The marine engines have the same rocker ratio, but use different cams and have bottom ends built to handle sustained RPMs.
What is the difference between 1989 Chevy 350 and 1985 Chevy 350?
In 89, Chevy introduced the 1st generation vortec head. It has a different angle, thus using a different intake manifold, and self adjusting rocker arm.
Can the lifters be adjusted on 1999 Chevy blazer v6 vortec?
There are no provisions for valve adjustments on this engine. Tighten rocker arm nuts to 20 ft lbs torque and you're done.
What is rocker arm shaft?
A rocker arm shaft is normally a long shaft with rocker arms attached to it, that provides the pivet point for the rocker arms (newer Chevy motors).
Is the procedure for tightening the rocker arm nuts on vortec heads different from those on regular heads?
yes
How tight do you tighten the rocker arm bolts on a 5.7 liter vortec engine?
24 foot pounds
What is arm shaft?
A rocker arm shaft is normally a long shaft with rocker arms attached to it, that provides the pivet point for the rocker arms (newer Chevy motors).
Can you use 1.5 ratio rocker arm on the intake valve and 1.6 ratio rocker arm on the exhaust valve for any power gains?
Some combinations might benefit from this. Difficult to evaluate without a dyno.
What does the ratio on a roller rocker mean?
The rocker arm ratio (whether they be stock or roller rockers) has to do with the offset of the rocker fulcrum. The stock rocker ratio on the small block Chevy is 1.5:1. This is important because it effects your valve lift. For example, a camshaft with .300 lobe lift will yield a .450 valve lift with the stock 1.5 ratio rockers. Multiply the lobe lift times the rocker ratio to get your valve lift. Now, that same camshaft will yield .480 lift with a 1.6 ratio rocker arm and .510 lift with a 1.7 ratio rocker arm. More lift is good as long as your valve springs can handle the extra lift and you don't run into valve/piston interference problems. You are more likely to run into coil bind with the valve springs than an interference problem though. When in doubt, make sure to check just to make sure there will be no problems.
Chevy rocker arm torque specs for 3.4L?
The correct torque for the rocker arm bolt is 14 N·m (124 lb in) plus 30 degrees.
What is the torque specs for the rocker arms on a 2000 Chevy impala 3.4l?
The 2000 Chevy Impala 3.4 liter engine rocker arm bolt torque specification is 45 pounds. The rocker arm bolts should be torqued in 15 pound intervals.
