[DeTomaso] 351C block question

[JDeRyke at aol.com]

In a message dated 5/18/09 12:57:58 PM, detomaso at luleweb.se writes:

> It is also 2 different front (only the front) cam bearing, have not all 
> 351C block same cam bearings size ?
> 
All 351-Cs have the same bearings, but all 5 cam bearings are different 
sizes, with the largest being the front bearing and the smallest being the rear 
one. Additionally, the front bearing has two oiling holes- one for the 
bearing itself and the other one transfers a little oil out a drilled passage to 
the cam drive gears. A tiny bevel on one edge allows some oil to leak out 
the front, lubricating the cam retainer plate. Very complex oiling system.
I was unaware there were three 351-C blocks called out. One may have been 
the almost unavailable thickwalled NASCAR block while the other two are 
2-bolt-main caps and 4-bolt-main caps. The other guess is, the third may have 
been the rare   Boss block which was a completely stock 4-bolt block that was 
checked for Brinnell hardness before being built into a Boss 351. Ford did 
the exact same thing to Boss rods and crankshafts- no essential differences in 
the forgings at all beyond the Brinnell dent. 
Cheers- J Deryke



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