No one can overstate the fact that EFI timing control has radically changed the ability for anyone to fully, and correctly, optimize an ignition timing curve, assuming they are interested in investing the time.
Following Chevy’s introduction of its popular small block V8 in 1955, the OEM needed something larger to power its medium-duty trucks and the heavier cars that were
on the drawing board at the time. Enter the big block!
For more than 90 years, Pennzoil has worked alongside the American Petroleum Institute (API) to ensure Pennzoil products meet – and often exceed – the stringent requirements of motor oil specifications implemented to best help protect the performance of your engine. With the industry ever-evolving, Pennzoil sat down with API Senior Manager, Jeff Harmening, to take a
The use of nitrous oxide in diesel engines is not a new concept. In fact, it has been used in drag racing for decades. However, it is only in recent years that it has gained widespread popularity in the worlds of diesel truck pulling and drag racing. Now, it seems as if almost everyone in the competitive scene is using it.
Relying on OE manufacturers like Caterpillar, Cummins, Detroit Diesel and Waukesha has always been an option, but diesel equipment owners are now more than ever seeking the aftermarket as a more viable solution for replacement parts.
Diesel and heavy duty go hand-in-hand. There’s no way around it. High compression causes high cylinder temperatures, with peak cylinder pressure often as high as 2,700 psi (or higher). This high pressure and high heat only have one thing in mind, to beat relentlessly on the first thing to get in the way – the pistons.
It’s no longer a secret… heck, it’s no longer that special for a diesel engine to make 1,000-plus horsepower. It’s become commonplace, and due to that increased capability, it seems these days, OE manufacturers are rating transmissions at their absolute limits.
With increased technology in turbo systems as well as fuel systems, the final limits of the 6.4L Cummins have not yet been discovered. These engines are capable of being a competitor in any event, whether it be truck pulling, drag racing, or cruising the strip.
Drew Pumphrey, owner of D&J Precision Performance, weighs in on stock vs. performance work in the shop and finding a balance between the two.