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#1
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Internally or externally balanced?
A 400 big block, are they internally or externally balanced?
thanx, Bob |
#2
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There external, but if your building one for performance have your machine shop rebalance it to internal and it will last a lot longer and it will be moe accurate.
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#3
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Ok
Cool, so I won't need to run that special flex plate, right?
Bob |
#4
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Only the cast crank 400 was externally balanced, a small number of them (trucks/4-speed cars) were produced with forged cranks.
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#5
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How to tell?
How do I know which one I have?
Thanx, Bob |
#6
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Quote:
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#7
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ok
I am going to have it internally balanced then as I'm using new rods and KB pistons, new bearings of course and total seal rings.
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#8
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Good deal, since it will need balancing anyway and this will help it last longer.
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#9
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revisit this........
My machineshop says it's gonna be about $375.00 to balance the crank and I've gotta run some special damper ($$$$$$)? Tryin to keep the cost down so if I want to keep it externally balanced what damper can I use? Mancini has a BHJ for about $ 310.00 and I found one from Performance Products (PowerForce) for about $ 150.00 that you bolt weights to depending upon your application. What do you guys think. This is a street application.
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#10
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For a street application just use an oem balancer (damper). Why bother spending $300. for an item that will give you 0 performance increase.
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#11
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GO ahead and have it internally balanced and get a new stock oem balancer from Mancini for a lot less than a race type dampner. Your better off going this way.
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#12
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If you have a cast crank can you internal balance? Getting a 383 crank would be alot cheeper than expensive balancers. 383 being a forged crank and therefore heavey enough to internal balance.
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#13
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All stock 400's are cast crank just like the 360's and they can be easly balanced internally. We do it to all our race engines.
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#14
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Quote:
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#15
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