Are brodix heads any good?
Usually, big performance heads give up a little downstairs for midrange and top-end improvements, but in this case, Brodix proved superior at every lift point on both the intake and exhaust sides, from off the seat through 0.800-inch lift.
What degree are brodix heads?
Big Block Chevrolet Compatible Heads BRODIX is the undisputed leader in big block Chevrolet compatible technology. Conventional style cylinder heads are available in 26º, 24º, and 20º valve angles, and spread port heads are available in 18º, 16º, 14.5º, 12º, and 9° versions.
How do I identify my brodix heads?
The stamping is usually located on the end of the casting above the accessory bolt area just below the valve cover rail. We have stamped some heads on the exhaust side of the head as well. The numbering system only identifies the casting model and the year the head was made.
How do I know what Cylinder Heads to buy?
There are many factors involved in choosing the optimum cylinder heads for a specific application, including:
- Engine displacement.
- Type of vehicle.
- Intended use.
- Desired compression ratio.
- Gear size.
- Other performance modifications.
What size heads for 454?
Performer RPM 454-R heads have rectangular 315/300-cc (long/short) intake ports and 118-cc open chambers.
What is the difference between 18 and 23 degree heads?
The 18 degree heads are also taller than their 23 degree cousins, and require longer valves and special head studs. Eighteen degree pistons with domes and valve reliefs matched to the combustion chamber shape and valve locations are needed.
What are SBC 23 degree heads?
New for 2012 is the CHI range of Chevy heads, our 23 degree Small Block head is a 215cc intake head designed for circle track or drag racers who want to benefit from significant horsepower increases and less weight of traditional performance chevy heads.
How do I identify my Mopar heads?
The casting numbers for small-block Mopar and big-block Mopar are a seven-digit number, which is raised, and usually found in one of two locations. The first would be on the top of the intake runner, under the valve cover. The second location is on the underside of the intake runner on the cylinder head.
What’s better cast iron or aluminum cylinder 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.
Are bigger cylinder heads better?
The bigger your engine displacement, the larger your cylinder head intake runners generally need to be. The bigger your intake runners are, the higher the power band is pushed. If you want to build power for the street, huge intake runners will build big horsepower at NON-streetable RPMs.
Which is better aluminum heads or cast iron?
How do I choose the right cylinder head?
What degree are factory SBC heads?
This small-block Chevy head cutaway illustrates the valve angle as measured from true vertical. The stock small-block angle is 23 degrees but as the angle approaches true vertical, the port flow improves. This is why the original production LS heads use a 15-degree valve angle.
What degree are Vortec heads?
Best power is made with 32-degrees total timing, although these heads can make power with timing reduced to 29-degrees when used with short-duration camshafts. Older heads needed 32-degrees and up to ensure a more complete burn. Stock out-of-the-box Vortec heads have approx.
What are the best flowing SBC heads?
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) |
Are Mopar 906 heads good?
While 906 heads do perform well when ported, the labor involved with hand-porting these heads, combined with the cost of new valves, springs, etc, has made it more economical in most cases to simply buy a new set of aluminum aftermarket cylinder heads.
What do cylinder head numbers mean?
This number is a representative figure of how a given head will perform on an engine by simulating how much air it can flow. For example, a Dart 24-degree, 308cc rectangle port Iron Eagle big-block head can deliver 325 cfm of air at 0.500-inch valve lift on the intake side.