is this true about a 350 sbc vs a sbm

Or when NASCAR factors Mopar out of the race. Happened all through history. They even cancelled an entire NASCAR event because of the slant six. The 1960 Compact Car Race. Hyper Pack Valiants took the first seven spots. NASCAR decided that was not competitive enough or entertaining enough so they canned it.

Same with the Hemi. They were reduced to 305 cubic inches, and a few teams ran them.....and they still won.

You can thank Bill France and Wally Parks for having hard ons for chebbies. They did everything in their power to make sure their beloved chebbies won. Had it been a level playing field, cheebie wouldda never been a contender. The Fords wouldda been the only ones to come close.

Interesting story actually what NASCAR did was first outlaw any motor over 305 ci in a winged car for 1971 I believe. Most racers went back to non-winged cars so they could keep running the Hemi but a few used a heavily modified LA 340 reduced to 304 ci in winged cars and they were actually somewhat competitive. These racing LA's were the first to use what are now known as the famous "W-2" heads and they held their own against the big-blocks, which started development all the way back in 1969.

Quoted from Chrysler Engines 1922-1998: "A single-winged Dodge Charger Daytona driven by Dick Brooks and powered by a 304-cu-in small block LA engine equipped with a pair of W2 cylinder heads entered the Feb. 14, 1971 Daytona 500 race. The cylinder heads were especially notable, in that they had been machined on a computer-controlled Cincinnati mill at the Engineering Technical Computer Center, the first time a Chrysler prototype had been machined in this manner. The 175.89 mph qualifying speed of the car gave it a back-in-the-pack ninth starting position; however, during the race, it actually led for 18 laps [and finished in seventh place]."

Sorry to hijack you may continue with the Chevy-bashing lol