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Re: [ihc] What does it cost to make a big hole instead of a small one?



At 10:03 AM 11/1/04, Tom Mandera wrote:
>Jim Camery wrote:
>> Why did a 392 cost more than a 345 or 304?  Essentially, why does a
>> motor with bigger holes for the larger pistons cost more than one with
>
>Aside from Greg's pragmatic "because they could charge more for it" answer..
>
>Having rebuilt a 304, 345, and 392 over the last couple years.. 304/345
>pistons are $20 each, while 392 slugs are $40.  That's $160 increase in
>cost right there. :)

392 valves are more/bigger, too.

Greg

>
>Otherwise my overhauls have been pretty close in cost - any deviation is
>mostly related to my personal need to take the next engine just "one
>more step further" than the last. :)
>
>Oh.. I run a 392 crank and rods in my 345.. and I run a stroked 345
>crank and 345/392 common rods in my 392. :D
>
>It seems to me there was more work put into balancing the stroked 345
>crank/rods and 392 pistons than there was when I had the 392 crank and
>rods and 345 pistons balanced.
>
>IIRC, the 345 (in a 392) crank had to have weight added, while the 392
>crank in the 345 just had more drilled from it.


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