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Hagerty Employee

Brother from another mother: 11 shared engine displacements

Today it’s common to find engines from several manufacturers that share displacement figures. Engineers determined that 500 cc per cylinder is a sweet spot for efficiency with low emissions and, consequently, there are lots of 2.0-liter four-cylinders, 3.0-liter sixes, and 4.0-liter V-8s. Before that discovery, road taxes in some countries also influenced displacement. Plenty of manufacturers ended up with engines designed to fit under certain mandated thresholds. Read the full article on Hagerty.com:

 

https://www.hagerty.com/media/automotive-history/brother-from-another-mother-11-shared-engine-displa...

161 REPLIES 161
New Driver

Yep that was a BIG miss.  Three letters for you — GTO.   SHEESH!

New Driver

Regarding your 383 bonus here's a 383 bonus bonus.  The Mopar 383 was built in both the B block and also the RB (raised B block).

New Driver

289.... Ford and American motors Avanti

Passenger

You missed 428 Pontiac and Ford

New Driver

Sorry Studebaker Avanti

Passenger

390 Ford

Passenger

The Mopar 273, 318, 340, 360 were all small block engines. In 1958 Mopar  built a 350 big block, which eventually grew into 361, 383 and 400 low deck engines.

Passenger

Yes the first version of the Mopar 383 was the first RB block.

Pit Crew

AMC terrified the racing world with the small block 401 I think the big three had something to do with its quick demise..

Pit Crew

Didn't see  the 425. Article says the 401 was the biggest Buick "nailhead". The 425 was. Produced from 1962 -66.Also, the 425 Olds from 65-67(?) and the 425 Caddy from 77-80(?).