396 Crank and 454 Block?
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Newbie
Joined: Nov 2009
Posts: 8
396 Crank and 454 Block?
A shop advised they can build a 427 by using a 396 crank and a 454 block. A friend stated that the 396 crank is not properly balanced for this setup and advised to use a 427 crank vs. trying to balance a 396 crank. thoughts?
4th Gear Member
Joined: Sep 2006
Posts: 1,950
From: Yacolt,WA
Your friend is wrong,a 454 crank is balanced externally because of the longer stroke and uses a different flywheel and harmonic balancer than all the other smaller big blocks,396,402,427.
Both the 396 and 427 are the same stroke, the 427 is just a bigger bore,they are balanced internally and use the same flywheel and balancer.
So yes you can use either a 396 or 427 crank in a 454 block to make a 427 and use the flywheel and balancer for a 396/427.
Both the 396 and 427 are the same stroke, the 427 is just a bigger bore,they are balanced internally and use the same flywheel and balancer.
So yes you can use either a 396 or 427 crank in a 454 block to make a 427 and use the flywheel and balancer for a 396/427.
Last edited by Y2K; Dec 6, 2009 at 10:37 AM.
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Newbie
Joined: Nov 2009
Posts: 8
Interesting. When I do a Google search on "396 crank with 454 block", I get more than one person stating that threre is a difference and many advise there is no difference. Intuitively, you would think there would be a slight difference in balancing to offset the added weight of 427 pistons (bigger means heavier). Maybe today's pistons are lighter than they were 40 years ago?
4th Gear Member
Joined: Sep 2006
Posts: 1,950
From: Yacolt,WA
Interesting. When I do a Google search on "396 crank with 454 block", I get more than one person stating that threre is a difference and many advise there is no difference. Intuitively, you would think there would be a slight difference in balancing to offset the added weight of 427 pistons (bigger means heavier). Maybe today's pistons are lighter than they were 40 years ago?
In the Staging Lanes
Joined: Aug 2009
Posts: 59
Your friend is wrong,a 454 crank is balanced externally because of the longer stroke and uses a different flywheel and harmonic balancer than all the other smaller big blocks,396,402,427.
Both the 396 and 427 are the same stroke, the 427 is just a bigger bore,they are balanced internally and use the same flywheel and balancer.
So yes you can use either a 396 or 427 crank in a 454 block to make a 427 and use the flywheel and balancer for a 396/427.
Both the 396 and 427 are the same stroke, the 427 is just a bigger bore,they are balanced internally and use the same flywheel and balancer.
So yes you can use either a 396 or 427 crank in a 454 block to make a 427 and use the flywheel and balancer for a 396/427.
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FlufyTiger
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Nov 13, 2006 09:55 PM
