How much HP does Hooker headers add?

With the Hooker Super Comp 1 5/8-inch headers (p/n 5020HKR) feeding 24-inch collector extensions, the power output of the 5.7L jumped to 434 horsepower at 6,100 rpm and 439 lb-ft of torque at 4,500 rpm.

Why are open headers bad?

There’s nothing wrong with running open headers. Lack of backpressure may hurt low end torque a little, but it won’t wreck anything or cause the engine to run poorly.

How big are the Hooker headers on a Chevy truck?

Giving you a serious increase in flow over other brand headers without a loss in the backpressure most engines need to perform! After years of testing, Hooker has discovered that a machined 5/16” header flange offers enough flex to hold the gasket tight to each exhaust port, and enough rigidity to keep everything properly tied together.

What can I add to my Chevy 350?

Chevy High Performance Magazine installed a set of Hooker headers onto a stock engine and saw an immediate increase of 16 horsepower and a more dramatic increase of 53 foot-pounds of torque. Headers bolt onto the block and attach to the stock exhaust pipes and catalytic converter.

What kind of headers do I need for a 1964 Chevelle?

For you A-body guys, they even have them for the 1964 to 1972 Chevelle as well. The headers come with a long-lasting ceramic coating and have the benefit of 1 3/4-inch primary tubes and 3-inch collectors. The collectors feature a ball-flange socket to connect to the exhaust, which creates a virtually leak-proof connection.

Where did Hooker Headers get their power from?

It was not long before Gary had hired employees and was operating Hooker Headers out of a building in South Ontario, CA. The Hooker philosophy was simple – make real, useable power by balancing the intake and exhaust pressure waves.

It was not long before Gary had hired employees and was operating Hooker Headers out of a building in South Ontario, CA. The Hooker philosophy was simple – make real, useable power by balancing the intake and exhaust pressure waves.

What can a hooker exhaust header be used for?

This branching led to more “non-race” header and exhaust applications for trucks, vans, motor homes, and economy cars. Hooker had headers for nearly anyone that could benefit from the mileage and performance improvements seen from un-corking your exhaust.

Chevy High Performance Magazine installed a set of Hooker headers onto a stock engine and saw an immediate increase of 16 horsepower and a more dramatic increase of 53 foot-pounds of torque. Headers bolt onto the block and attach to the stock exhaust pipes and catalytic converter.

What does a new cylinder head do for a Chevy 350?

The cylinder head is the piece of metal that sits above the combustion chamber. It holds the valves, valve springs and the intake and exhaust runners. A new cylinder head comes with bigger valves, intake and exhaust runners with smoother sides for better airflow. It should be matched to a new camshaft. This fix will immediately add 100 horsepower.