Crown Jewels for SB Fords

Crown Jewels for SB Fords

Hemispherical-style combustion chambers have earned a formidable reputation for power generation. The Hemi head broke fresh ground in several areas, including skillfully uniting superior air flow with larger valves. Now, a new company, Hammerhead Performance Engines, headed by Greg Brown, is producing unique Hemi heads for the small-block Ford. With an emphasis on completeness, the innovative head kits include cast aluminum Hemi-style valve covers, Jesel 1.7:1 ratio rockers complete with rocker stand system and all the necessary valve and spring assemblies as well as gaskets. Read the full story here, compliments of Street Fords...
Partial deliveries of pulley/belt combinations barely adequate

Partial deliveries of pulley/belt combinations barely adequate

How to do it better and how some road racers could raise their game. By Alfie Bilk: For the adept machinist, there’s no miraculous skill required to make adequate custom pulleys. What’s much more useful, however, particularly for engine building shops, is being able to acquire pulley combinations—both accurately made and durable, off-the-shelf and onto the engine quickly. Shelf-stock availability is an invaluable resource. Those prospects sound promising, right? They are. “Do you know how long it takes to organize this stuff in individual pieces,” says KRC’s Cody Haskins. “It’s longer than the average engine builder wants to mess with – and ‘half-shipped, half-on-back order’ is never a winning message.” This is not a new area for Haskins. Head of the Kennesaw, Georgia, power steering and pulley company, he has been one of the largest belt and pulley suppliers in the country for years. “We have on the shelf,” he assures, “any combination of pulleys and belts an engine builder could conceive.” Among pulley talking points are their diameters and provisions for additional pulleys. Notably, Haskins’s pulleys feature their distinctive R-lok innovation, a convenient pulley interlocking mechanism. This means additional pulleys are stackable. Thus, adding a further pulley to the crank, for example, is straightforward. These are usually employed to drive an oil pump, or power steering pump, or alternator. Common crank pulley diameters include 2.5in., 2.75in., 3in., and 3.5in. Of course, manufacturing a vast range of pulleys to form dozens of combinations is bound to disappoint without an equal number of drive belt types to complete the systems. Belt types include HTD, 6-rib serpentine belts and even V-belts. HTD...
How to add 5hp to the race engine throughout the rev range:

How to add 5hp to the race engine throughout the rev range:

Each generation of induction technology continually evolves; here is the latest. Measuring two inches deep, Mike Androwick of Mike’s Racing Heads has introduced a new lightweight four-hole tapered spacer to suit all 4150-style mounting flanges. It accommodates a wide range of competition engines. It is also said to fulfill the higher expectations of Dirt Late Model racers. Using the power of big-block modified racing engines as his datum, Androwick explains that this new tapered spacer generates a further five horsepower when tested against the most competitive spacers he could find. Importantly, the internal air flow surfaces are formed by pronounced small, sharp steps, giving the appearance of multiple tiny terraces. These terraces act as anti-reversion aids, resisting reverse airflow initiated when the valves close and fast-moving airflow is momentarily brought to an abrupt halt. At the spacer’s internal center, a further anti-reversion measure takes the form of a flat 1/2in square diamond-shaped pedestal. These one-way resistance measures attempt to limit the travel of reverse airflow—particularly its detrimental effects should it reach the carburetor boosters. Available at a price of $200 and immediate shipping completes the picture. Source Mike’s Racing Heads Concord, North Carolina (704) 654-6079...