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:
Chrysler had a 350 cubic inch motor called the Golden Commando or Sonoramic Commando in the 1958, topped with dual carbs. An example of the motor - watch John Carpenter's cinema adaptation of Stephen King's Christine. The '58 Fury had the aforementioned Golden Commando.
I own a Studebaker Lark and a Studebaker Avanti. When I'm asked the displacement of the cars' respective motors and respond "289," most people think I'm running a transplanted Ford engine. I always explain, "No Studebaker made this motor, you can't copyright or trademark cubic inch displacement number."
International and Mopar also had different 392's. In Cornbinders, it was optional in pickups from 1969 until the end of the Light Line in 1975, although they also used the AMC 401 intermittently circa 1973-74. As for Chrysler products, it was the biggest displacement for the original Hemi in the 1950's.
Then there's the Ford and Studebaker 289's - completely different engines.
Disappointed that Studebaker's 289 was omitted from list! Often at car shows, I'm told the 289 in my '63 R1 Studebaker Avanti is a Ford motor. Then, the insults continue...Avanti was a Kit Car (never), Avantis were made in Canada (never), Avantis were designed & made in Europe (never). Avanti & Avanti II were made in South Bend, later Avanti IIs & Avantis were made near Youngstown, Avantis were made in Georgia, Avantis were made in Cancun, Mexico.
Pontiac 400? Ubiquitous in 67-78 (including some 79's) Poncho muscle including in HO, RamAir (II,III,IV,V), etc. across F, A, bodies as well as the bigger platforms like Bonneville, Catalina, etc.
I don't recall ever seeing a Chevy street car running a GMC 6 but I do remember that the dirt track stock cars would swap out their Chev 6 for a GMC 6 to help them compete with the Ford V8s. What I don't recall was whether this was a legal swap - not that it mattered much in those days !
170, Ford inline 6 and a Chrysler slant 6
198, Buick V6 and Chrysler slant 6
200, Ford inline 6 and a Chevy V6
215, Buick and Olds aluminum V8 and a 3.75 inch bore Chevy six sold only by Pontiac
225, Buick V6, Chrysler slant 6
230, Chevy 6 and Jeep Tornado 6
250, Chevy 6, Rambler V8, Cadillac V8 HT4100), and a Ford inline 6
258, AMC 6 and Jaguar 6
267, Chevy V8 and Cadillac V8
300, Buick V8 and a Ford 6
304, AMC and International
305, Chevy and GMC big block V6
307, Chevy and Oldsmobile
315, Chrysler and Ford voodoo
325, Chrysler and Chevy (5.3)
330, Oldsmobile, Ford truck (FT), Ford modular
340, Buick and Chrysler
360, Ford truck (FE)
368, Lincoln Y block and Cadillac
392, Chrysler and International
401, GMC big block V6, International V8 and Ford truck (Super Duty)
410, MEL and FE. Both the same manufacture but two completely different engine families.
413, Chrysler and the Ford V10
425, Buick nailhead, Oldsmobile tall deck and Cadillac ('77-'79)
429, Cadillac and Ford
430, Buick and Ford MEL
440, Chrysler and a White V8 truck engine in the '50's
478, GMC V6 and International V8
I got beat to the comments about the Ford & Studebaker 289. Ford also had a 221 V8 in production just prior to the 260/289 era, which was coincidentally the same cubic inches as the original Ford Flathead first produced back in the early 1930's. Different architecture, same cubic inches. That probably doesn't count, but there you go.
Google "383 engine" or "383 rotating assembly" and the majority of the search results you'll get will be for a Chevy small-block, not a Mopar big-block. Every hot-rodding magazine in the '80s, '90s, and early '00s featured small-block Chevy stroker builds.
What about the 283 small block chevy I have one in my 65 malibu chevelle it runs strong and I heard about a head swap somewhere and they were getting some big numbers from it.
Your article states the 401 was the largest size of Buick Nailhead engine. This is incorrect. In 1965 and 66 the final year for the nailhead, a 425 CI version was available.
Which brings up another displacement match. Oldsmobile also had a 425 CI V8 from 1965 thru 67.
303 was shared by Oldsmobile and Pontiac. The latter was the displacement Pontiac made for the actual race cars they ran in Trans Am racing in 1969 due to the 305 CI 5-Liter limit. It was not in the production cars.