From most vantage points, the drivetrain in the NASCAR Car of Tomorrow seems to have its origins somewhere just after the discovery of fire. Under the hood is a pushrod V8 with 350 cubic inches of displacement, using the same architecture first outlined in the early 1950s. In its current form, ye olde mill is now delivering somewhere between 800 and 900 horsepower, and the small-block is still fed by the same Holley 4150 carburetor anyone can pick up from the local parts store. Behind the engine is a similarly crude four-speed manual transmission built to take repeated abuse. And little else. It sends power to a Ford nine-inch rear end – a design which, compared to the engine, is brand-spanking new. It was introduced in 1957.
If we’re talking weaponry metaphors, the average NASCAR racer is a Louisville slugger wrapped in barbed wire compared to the Predator drone of your average Formula One or WRC beater. Or at least it looks that way from a cursory glance. But make no mistake, this is still big dollar racing, and the teams lapping Charlotte Motor Speedway or Talladega are still doing everything in their power to beat the rules at every turn and make their car faster than the rest of the pack. That means dabbling in advanced metallurgy, fiddling with fluid dynamics and finding out how to make their 3,450-pound behemoth faster than their competitors with the same kit.
It’s an odd crossroads that fuses new and old tech, and a recent trip to Michael Waltrip Racing had us checking our NASCAR prejudices at the door.
CLICK HERE for hi-res photos from Autoblog’s shop tour of Michael Waltrip Racing
All info, photos, etc. courtesy of Autoblog.
