460 Internally or externally balanced
#1
460 Internally or externally balanced
Hi guys. I saw Horse Power television last Sunday morning on the SPEED channel and they were doing a 460 build up. There 460 was said to be externally balanced therefore they had a large counterweight that slid on the crank snout behind the timing cover. I put together a 1972 460 that did not have this counter weight. I was wondering if this is a concern. Has anyone ran in to this or know the answer. Thanks
#2
460 weighted spacer introduced midyear 1979 on F100/350's and Econolines. No 460 passenger cars after 1978.
There is no before/after production date or serial number break, as this was a running change.
The only way to know is by the block casting number: D9TE-6015-AB.
In addition to the weighted spacer, the harmonic balancer, crankshaft and flywheel are also different.
There is no before/after production date or serial number break, as this was a running change.
The only way to know is by the block casting number: D9TE-6015-AB.
In addition to the weighted spacer, the harmonic balancer, crankshaft and flywheel are also different.
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#9
Join Date: Jun 2004
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yes and no.
if you are going to build a stroker motor, most people prefer the D9TE block as it had longer cylinder walls. the stroker kit can be either internally or externally balanced depending on what kit you order and who is doing your balancing.
other than that either the internal or external balanced engines are good engines and offer about the same performance potential to start with. just remember the externally balanced rotating assembly will fit the internally balanced blocks but not the other way around. just make sure to use the correct flywheel and spacer for your application (in other words keep the rotating assembly togather as one)
rgds
Mike
if you are going to build a stroker motor, most people prefer the D9TE block as it had longer cylinder walls. the stroker kit can be either internally or externally balanced depending on what kit you order and who is doing your balancing.
other than that either the internal or external balanced engines are good engines and offer about the same performance potential to start with. just remember the externally balanced rotating assembly will fit the internally balanced blocks but not the other way around. just make sure to use the correct flywheel and spacer for your application (in other words keep the rotating assembly togather as one)
rgds
Mike
#12
#13
I am awaking this old post. I have been reading up on this. I have a couple questions,
Wouldn't the engine builder need the counter weight and the fly wheel when building the engine?
Can someone incorrectly install the flywheel so it is out of balance?
I ask because I have Ford replace the engine in my 92 F-350. It has a manual trans. It has a new vibration. It has the counter weight on the crank. But the counter weight is from the old engine not the new long block.
As I recall a externally balance 428 you could put the flywheel on incorrectly.
Wouldn't the engine builder need the counter weight and the fly wheel when building the engine?
Can someone incorrectly install the flywheel so it is out of balance?
I ask because I have Ford replace the engine in my 92 F-350. It has a manual trans. It has a new vibration. It has the counter weight on the crank. But the counter weight is from the old engine not the new long block.
As I recall a externally balance 428 you could put the flywheel on incorrectly.
#14
Join Date: Mar 2011
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