Tough NMRA classes beg the question: What is a good clutch?

Tough NMRA classes beg the question: What is a good clutch?

By Fergus Ogilvy:   There are several schools of thought on the question of what constitutes a good clutch. But first there are two separate strands to this narrative that need to be addressed: street or track. It’s key to distinguish whether the car will be used mostly for high-performance street-travel or for track use and its purpose needs to be decided. In either case the clutch has to transmit the car’s horsepower and torque and a stock clutch assembly will flounder in thermal shock and abuse, even in a slightly modified car.   Let’s focus our attention for a moment on selecting a good clutch for a high-performance street car that visits the drag strip occasionally. In this pursuit, the first consideration is usually vehicle weight. Accurate information about the vehicle’s poundage not only guides to the proper selection of an adequate clutch but also has relevance in the selection of the most effective flywheel. Another necessary statistic is the amount of power being transmitted through the clutch. And third, let’s not overlook the gearing. Lastly, pay attention to the size and type of tire conveying the rotational energy to the road or track.   Flywheels and a simple gearing formula Lighter flywheels provoke engine speeds to accelerate and decelerate quicker while the opposite is true of heavier flywheels. Heavier street cars usually benefit from a heavier flywheel, which maintains its advantageous momentum—it inhibits engine speeds from descending too quickly. However, shedding 10 to 15lbs of mass from the rotating assembly of a properly geared vehicle has a pronounced effect on its responses. Hence, lightweight, high-revving race cars...
World’s most powerful Y-block

World’s most powerful Y-block

“To the best of my knowledge,” said Jon Kaase, “prior to last year’s Engine Masters Challenge, the most powerful naturally aspirated Ford Y-block engine produced around 600 hp.” This enduring feat, however, was substantially exceeded on January 17, 2016, when Kaase’s efforts raised the peak power record to 709 hp @ 6,300 RPM and 748-lb.ft. of torque at 5,400 RPM. Read the full story compliments of Hemmings Muscle Machine’s July 2016...
Competition Connecting Rods

Competition Connecting Rods

24 things you need to know. By Sam Logan: Nothing undermines the legitimacy of a connecting rod maker more than a deficient batch of rods. They agonize constantly about heat treatments, high revs, heavy pistons, heavy pins, the number of race laps between rebuilds, but probably most of all whether or not nitrous is being sprayed. It’s a complicated business determining minimum weight while yielding maximum strength, enough to withstand the abuse sustained by the average race motor. Read the full story as published in Engine Professional...
Just Like the Original, Only Better.

Just Like the Original, Only Better.

AutoMeter’s line of direct fit mounting solutions continues to expand with the inclusion of these high quality, American made, billet aluminum dash panels. Precision engineered for a perfect fit, these panels drastically simplify the process of gauge installation while providing a clean, timeless look. It’s never been easier to add the accuracy and quality of AutoMeter gauges to your project. Checkout the complete lineup of applications for your classic at AUTOMETER.com. Products 7033        Dash Panel, Chevy Car 55-56, 1 x 3-1/8″ & 4 x 2-1/16″, SR Bezel, Billet 7034        Dash Insert/Adapter, Chevy Car 59-60, 1 x 5″, Billet 7035        Dash Insert/Adapter, Mustang 65-66, 1 x 3-3/8, 4 x 2-1/16″ 7036        Dash Panel, Chevy Truck 55-59, 1 x 3-1/8″, 4 x 2-1/16″, Billet 7037        Dash Insert/Adapter, Chevy Truck 54-55, 2 x 5″, Billet 7038        Dash Insert/Adapter, Chevy Car 51-52, 2 x 5″, Billet 7039        Dash Insert/Adapter, Chevy Truck 47-53, 2 x 5″, Billet 7042        Dash Panel, Chevy Car 53-54, 1 x 3-1/8″, 4 x 2-1/16″, Billet 7043        Dash Panel, Chevy Truck 64-66, 2 x 3-1/8″, 4 x 2-1/16″, Billet 7044        Dash Panel, Nova 62-65, 1 x 3-1/8″ & 4 x 2-1/16″, Billet 7045        Dash Panel, Chevy Truck 67-72, 2 x 4-5/8″, 4 x 2-5/8″, Billet 7046        Dash Panel, Ford Truck 48-50, 1 x 3-1/8″, 4 x 2-1/16″, Billet 7047        Dash Panel, Chevy Truck 60-63, 2 x 3-1/8″, 4 x 2-1/16″, Billet 7048        Dash Panel, Ford Truck 53-55, 2 x 3-1/8″, 4 x 2-1/16″, Billet 7049        Dash Panel, Chevy Truck 55-59, 1 x 3-1/8″, 4 x 2-1/16″, Black...
Remedy for Jeep’s steering ailments:

Remedy for Jeep’s steering ailments:

Solutions all hot rodders should know. By Archie Bosman: Many consider type CJ Jeeps, those in production from 1976 to ’86 susceptible to internal steering column ailments, particularly the open-top models where the column could be exposed to rain, snow, dirt and dust which hastens wear. The wear is not reflected in the steering column’s ability to turn the wheels—instead it’s conspicuous by looseness in up-and-down movement and also back-and-forth within the steering column. Many Jeeps from this era feature a steering tilt mechanism. The significance of efficient steering tilt was brought to prominence by Michigan steering specialists ididit whose history began in the mid-nineteen-eighties. At that time Street Rods were the foundation of their customer base and their multi-angle steering tilt was born of necessity. The chief annoyance among hot rodders was the awkward positioning of the steering column that was installed at a near vertical angle and never conducive to comfortable driving. This inconvenience spawned a succession of multi-angle steering tilt arrangements that increased the angle of articulation of the steering wheel and corrected the impediment. But for Jeep CJ owners, over time the tilt shaft assembly, which was offered originally as an option, became sloppy at the head of the column. The arrangement incorporates two aluminum castings and two shafts, an upper and a lower, both with forked ends. The ends are positioned 90-degrees apart and the assembly is completed with a grooved metal ball that is manufactured in two halves. Of course, the advantage of having access to a replacement steering column with efficient tilt mechanism not only rectifies potential wear troubles but also allows...