RE: 346 and 452

[ntolerance <ntolerance@xxxxxxxxxxx>]

[AD removed for archives]
-------------------------------------------------------------------
Is your computer freezing up or slowing down?
Repair corrupt files and harmful errors - protect your PC
Take a 2-minute PC health check-up at no charge!
caad3p7bOyW3Na/PC PowerScan
-------------------------------------------------------------------

I have been told some early 346 heads didnt have hardened seats. I cant 
confirm that as i dont have an early set too look at. I have a set of 
346 heads from a 73 440 with hardened seats.

If you were to look at a NOS set of heads, its prety clear which ones 
are induction hardened and which one arent. You can see the ring around 
the seat where the induction took place.

BTW for anyone redoing a set of heads with hardened seats, many shops do 
not hot tank their parts any more, they bake them in an oven to 800 
degrees then shot blast them. A friend of mine who is a mechanical 
engineer,(he is a mopar guy btw) told me that process may weaken or 
eliminate the induction hardening. 

For what its worth, at any rate.

Doc.

Sean B wrote:
> 
> I see guys on eBay selling 346 heads as having factory hardened valve 
> seats for unleaded fuel, all the time.  I have a set of 346 heads from a 
> 
> '72 New Yorker.  These heads aren't for unleaded, are they?  I thought 
> only the 452 heads were hardened?
> 
> Sean


----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html. 



bOyW3N.