Re: IML: 62 rebuild

["mike and linda sutton" <mikanlin62@xxxxxxxxxxx>]

Drive it, watch it, and do a compression or leak down test. If its hopeless 
then worry about what to do with it. There is virtually no difference 
between the 413 and 440 in the areas of the block, other than the bore of 
the cylinders and the fact that non motor home 413 pistons are not as easy 
to come by as 440. As far as interchanging with a 440, thats what I did but 
only because the 440 was readily available in my garage. You could put your 
413 heads on the 440, if you want to keep the top end looking completely 
stock ( 4 valve cover bolts  on 413s versus 6 on the 440s but most people 
wont even notice or know that its different ).

The 62 and later big block all have the same trans bolt pattern, so the 
trans will bolt to the block. On the later engines, like 72 and newer, the 
balance may be different  but I dont remember for sure. Even thats not a big 
deal with the correct harmonic balancer and flex plate.

All in all, Id continue to drive it and monitor what its doing. 413's are 
not hard to come by,  finding them nearby can be an issue depending on where 
youre located.

Good luck

Mikey
62 Crown Coupe 



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