Do Vortec heads have roller rockers?
See all 16 photos The Vortec heads require self-aligning rocker arms, so we installed a set of COMP Cams roller-tip Magnum rockers (1.52:1 ratio, PN 1417-16) for the first test.
Are Scorpion rocker arms good?
They make a quality product and they make it here. Putting aside all the Hot Rod/Car Craft/ect advertising hype you’ll see from a major cam grinder – Scorpion’s rocker arms have proven to be as good or better than any stud mount rocker that you can buy from anyone.
Do they make aluminum Vortec heads?
First of all, the World Products head is aluminum, rather than cast iron like stock Vortec heads. For compatibility, the World version maintains the standard 23-degree Chevy small-block valve angle and the 64cc combustion chambers, but uses 215cc intake ports, which are huge compared to a stock Vortec’s 170cc runners.
Where are Scorpion Roller Rockers made?
MADE IN AMERICA AND PROUD OF IT! THE BEST HIGH PERFORMANCE RACING ROCKER ARMS, AND THEY’RE MANUFACTURED RIGHT HERE IN THE USA.
What does self aligning rocker arms mean?
Re: What does self aligning rocker arms mean? ( Essentially it means that the tip is designed in such a way that it cradles the valve stem and keeps it from turning off sideways.
Are Vortec heads cast iron or aluminum?
What is the difference in Vortec heads?
The Vortec heads are a little bit lighter than the older heads and have a “kidney” or “heart” shaped combustion chamber that is more efficient than the double hump chamber.
How do you adjust Scorpion Roller Rockers?
To adjust the exhaust lifter/rocker, rotate the engine watching the intake lifter. The lifter will rise and then go back down, just as it stops moving down (valve just closes) stop and adjust the exhaust.
What are roller rockers?
A roller rocker is a rocker arm that uses needle bearings (or a single bearing ball in older engines) at the contact point between the rocker and the valve, instead of metal sliding on metal. This reduces friction, uneven wear and “bell-mouthing” of the valve guide.