How much HP does Vortec heads add to a 350?

The original answer was related to modifying the heads to accept more valve lift. Our original answer combined the Chevrolet Hot cam with a set of these Vortec heads. Our estimate then and now is around 350-375 horsepower.

How many cc are Vortec heads?

These large chamber heads shrouded the valves even more than the older 64-cc chambers and did nothing to improve airflow. Not so ironically, the Vortec returned to a 64-cc chamber mainly because the current trend for all engines is with smaller, tighter chambers to improve both flow and chamber activity.

How much HP will aluminum heads add?

Depending on your cam, you can gain anywhere from 40-70hp. Cam and heads can gain you 100+hp.

Can heads increase horsepower?

Buying a new head that has four valves per cylinder will dramatically improve airflow in and out of the engine and this can improve power. Using performance cams can also make a big difference.

How much horsepower can I get Out of 350 Vortec?

With power adders such as superchargers turbochargers or nitrous oxide I’ve seen as much as 5 horsepower per cubic inch making power costs money A GMPP Vortec 350 crate motor is probably good to about 500hp while maintaining reasonable reliability.

What cam to go with, 350 with vortec heads?

Straubtech

What kind of gas does a Vortec 350 use?

It will run on regular fuel but is 5 percent more efficient if you use premium, 90+ octane fuel. Flexible Fuel Engines GM vehicles with flexible fuel engines require either 87 Octane or E85 fuel.

How to get more horsepower out of a Chevy 350?

How to add horsepower to a 5.3 Silverado