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

[Tom Mandera <tsm1@xxxxxxxxx>]

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. :)

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.