Question: How Much Horsepower Do Performance Heads Add?

Can you put aluminum heads on a cast iron block?

If you are installing aluminum heads on a cast-iron block, the difference in expansion rates can cause sealing problems.

Because of this, composite gaskets seem to work best.

There are different designs available.

Just make sure whatever you use is applicable in an aluminum-head/iron-block situation..

What are the best small block Chevy heads?

Peak Torque and HorsepowerCylinder HeadPeak HorsepowerPeak TorqueDart419 at 6,200 rpm417 at 4,200 rpm (2)Jeg’s408 at 5,900 rpm421 at 4,300 rpm (1)Summit405 at 5,900 rpm416 at 4,400 rpm (4)Edelbrock395 at 5,900 rpm409 at 4,200 rpm (5)4 more rows•Jul 12, 2012

Can you put 400 heads on a 350?

400 heads on a 350 block is a great way to increase your midrange and top end power. The swap is a direct bolt – on deal, you just need to be sure to use 400 head gaskets when you do the swap.

How much HP does a cam add to ls1?

With the engine up to operating temperature, we recorded 512.5 hp and 436.7 lb-ft of torque, gains of 94.5 hp and 14.7 lb-ft of torque over stock. The increased lift and duration of the Comp Cams custom grind laid on the power up top, recording over 500 hp from 6,300 to 7,000 rpm.

How much HP do Vortec heads add?

Our estimate then and now is around 350-375 horsepower. Your question relates to porting the Vortec heads to improve the flow, which is a great idea. The Vortec heads offer great intake port flow despite the rather small 1.94-inch valves.

How does a cam make more horsepower?

Method 2 of 2: Maxing Engine Performance. Consider installing a performance camshaft. Performance cams increase the duration and timing of the valve openings during the engine stroke, increasing horsepower and making your car accelerate more quickly.

How much horsepower do headers add to a 350?

The length of the primary tubing determines the effective rpm range, but headers can be worth 15-20 hp on the right application. Run on our restrictive two-barrel 350, the headers improved the power output to 248 hp and 365 lb-ft of torque, with consistent gains through the rev range.

Are aluminum heads worth the money?

Yes they are worth it. Pretty much every aftermarket head is worth a good power increase over any stock head. I like the aluminum heads since they are easier to port, repairable, and give a nice weight reduction. They usually are only a few hundred more than the iron heads.

How much horsepower do shorty headers add?

The headers will give you 8 to 15 additional HP gains, and come packaged with gaskets and the hardware needed for installation. Performance-tuned and engine-matched with performance gains at the lower to midrange RPM highway speeds.

How much horsepower do straight pipes add?

Depending upon your vehicle and the system you choose, an after-market exhaust can add as much as 50 horsepower or as little as 2 or 3 horsepower. Here’s how you can figure out what to expect. After-market exhaust systems are almost always less restrictive than factory exhaust systems.

How much horsepower will Edelbrock heads add?

After installing the Edelbrock Performer heads, the 302 blasted out 383 hp and 364 lb-ft of torque, for a gain of 78 hp peak to peak. Near 6,000 rpm, the difference in power was an astonishing 92 hp. The name Edelbrock conjures up all manner of performance components, and for good reason.

Does aluminum heads increase HP?

Iron heads vs Aluminum heads make no difference in power or heat.