What kind of pushrods do engine builders use?

For performance applications, many engine builders prefer to use one-piece pushrods rather than three-piece pushrods that have the ends welded on. The ends on a one-piece pushrod are CNC machined to conform to the recessed cups in the rocker arm and lifter. It works as well as a welded steel ball, but adds cost.

How much horsepower can a push rod engine gain?

A lot of engine builders say they have found gains of 15 to 25 horsepower on the dyno by just changing the pushrods in an engine to a stronger, stiffer design. Others are finding even more power by playing around with pushrod lengths and different rocker arm ratios and styles.

What are the ends of a push rod made of?

The ends on a one-piece pushrod are CNC machined to conform to the recessed cups in the rocker arm and lifter. It works as well as a welded steel ball, but adds cost. The hardened ball on the end of a stock three-piece pushrod or even a chrome moly pushrod can break off under racing conditions.

How big of a push rod do you need for a drag racer?

Most of the circle track racers are limited to a maximum pushrod diameter of 7/16″, but many drag racers are now using the larger 1/2″ to 5/8″ diameter pushrods in their motors. Most are using straight tubing, but others are using tapered pushrods to get increased strength and stiffness in the critical lower area where loads are greatest.

How big is a one piece chromoly pushrod?

btr chromoly one-piece pushrods – 7.270″ long – 3/8″ diameter – .135″ wall – sold individually

What kind of cylinder heads does Ford Racing use?

Ford Racing has a longstanding history with aftermarket parts. Specifically, their latest generation GT40 aluminum cylinder heads. Based off the original and incredibly popular GT40 iron head (from the 90s), Ford has continued to improve the design over the years.

What are the benefits of aftermarket cylinder heads?

The aftermarket offers astonishing improvements over stock heads, for both f orced induction and naturally aspirated applications. Some well known names are Edelbrock, Trickflow, and of course Ford’s own performance branch, Ford Racing. Benefits from these aftermarket heads are simple – better design, lighter weight, more power!

How are Ford cylinder heads and valvetrain interchange?

You can use the social sharing buttons to the left, or copy and paste the website link: https://www.diyford.com/ford-cylinder-heads-valvetrain-interchange-small-block/ The 221 cylinder head is identifiable at a glance by observing its small kidneyshaped 45- to 51-cc combustion chambers along with 1.59/1.39-inch intake/exhaust valves.