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.

How much HP does Vortec heads add?

Most of these small block Chevy heads offer a power increase of around 40 hp, and even the iron Vortec heads were worth 20 hp over stock. The two best small block Chevy heads in terms of peak horsepower were worth more than 60 hp.

Does a Vortec 350 have aluminum heads?

Chevy Vortec Aluminum 350 Cylinder Heads 64cc 2.02/1.60. THIS CYLINDER HEAD HAS THE FOLLOWING: NEW HI-FLOW Aluminum 64cc Cylinder Heads. 190CC intake ports.

What are fast burn heads?

The Fast Burn heads are a 23-degree wedge design developed using the best of GM Motorsports and GM Production cylinder head techniques. The heads can fit either self-aligning rocker arms, as we chose to run, or standard rockers and guide plates.

Can you put Vortec heads on a 383?

Randy and Rick Ferbert build a 606hp small-block 383 using iron Vortec heads. Here’s how they did it! It can’t be done. You just can’t make a lot of power with cheap cast-iron heads.

How much lift can Vortec heads take?

around 0.420 inch
The factory Vortec heads use a light, single-wire valvespring with a damper that generates between 70 and 80 pounds of load on the seat. Because these heads are meant to work with a 1.5:1 rocker, their tall valve guides can only handle maximum valve lifts of around 0.420 inch.

Are aluminum heads better than cast-iron heads?

Aluminum heads have higher compression, are lightweight and have better ports when compared to iron heads. However, iron heads are usually preferred by daily drivers, since it does not develop problems like aluminum heads over time. Aluminum heads may have to be removed and repaired more often than iron heads.