Sbc 882 Cast Iron Heads, 194 Valves, Screw In Studs, Guide Plates, Comp. Springs on 2040-parts.com

Concept Car of the Week: Mercedes T80 (1939)

In the decade before World War II, no other carmaker even came close to matching the combined dominance of Mercedes-Benz and recently founded Auto Union. Supported by Adolf Hitler's Nazi government, the two brands had grander plans to demonstrate Germany's technological supremacy. In August 1936, Auto Union engineer Ferdinand Porsche and race car driver Hans Stuck approached Wilhelm Kissel, chairman of Daimler-Benz, and presented a plan to build a car that would set a new land speed world record.

Big news on GM's big SUVs

Good news and bad news for General Motors' large cash cows, the full-sized SUVs. The bad news: The massive sport-ute market has shrunk roughly in half to around 300,000 a year. The good news for GM: This drove some competitors either out of market or into the near-niche category, leaving the new-for-2015 Chevrolet Tahoe and Suburban, the GMC Yukon and Denali, and Cadillac Escalade with a big share of this very profitable segment.

Spy Shots: Could this be the 2014 Porsche GT3 RS?

Brenda Priddy & Co. sent us the above photos in an e-mail with the subject line “BREAKING: 2014 911 GT3 UNCAMOUFLAGED!” So, we opened it and found a few shots of Porsche's new rear-engine, mini Panamera in “all black everything” but sporting very little camouflage. If this is indeed the 2014 Porsche 911 GT3 RS, the bodywork is either quite a bit more restrained than that of the outgoing 997.5 GT3 RS, or it's wearing bodywork that won't appear on the 2014 GT3 RS when it debuts at the Paris motor show in September.