big block chevy
Looking at crankshaft engine dampers and some say internal or external balance. What big blocks were internal balance, and what was external balance?
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AFAIK 396s and 427s were internally balanced while the 454s was externally balanced
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Concur....
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You can tell as the externally balanced harmonic balancer has a counterweight cast into the back.
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does anyone have some comparison pics to see the difference?
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http://s26.postimg.org/m956c1m21/download.jpg
The one on the left is the 454 while the one on the right is the 427 |
Just to add concerning those pics. The crank on the left appears to be from a late model -- note the one-piece rear main seal. Earlier 454 CAN look just like the crank on the right ... markings and stroke must be verified ... TAZ
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thanks guys.....
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Not to question the pics but are you sure that is a 454 crank and not a newer LS crank with a reluctor ring? Maybe you posted the wrong image by accident.?...
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