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.
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.
When did Chevy use aluminum heads?
1986 After years of development effort to ensure durability, the first cast-aluminum cylinder heads were fitted to some Corvettes, Chevy Camaros, and Pontiac Firebirds powered by L98 small-blocks.
What is a fast burn engine?
ALUMINUM FAST BURN HEADS Fast Burn technology delivers more horsepower by increasing cylinder pressures, which maximizes the air/fuel mixture’s combustion. The 62cc combustion chamber is designed for use with flat-top pistons.
How much horsepower do Vortec heads add to a 350?
Jeff Smith: We wrote about Vortec heads in 2016, and that article spawned this question. 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.
Which SBC heads are best?
Peak Torque and Horsepower
| Cylinder Head | Peak Horsepower | Peak Torque |
|---|---|---|
| Dart | 419 at 6,200 rpm | 417 at 4,200 rpm (2) |
| Jeg’s | 408 at 5,900 rpm | 421 at 4,300 rpm (1) |
| Summit | 405 at 5,900 rpm | 416 at 4,400 rpm (4) |
| Edelbrock | 395 at 5,900 rpm | 409 at 4,200 rpm (5) |