| Never heard of any more than 1 hp/cu from the 283 in 57 with FI, with 2 - 
4V it was 270hp
Perhaps your thinking of a 348 cu/in which was 315 with a 4V and 335 with 
3/two's
>Anyone know the heads and camshaft used on the 315 horse 283?  The RPO
>number for the 315 horse 283 is RPO 354.  I have been unsuccsful finding
>camshaft specs or head casting number.   Thanks.
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
"Nothin lasts forever except old Fords and a natural stone" - Willie Nelson
  http://Bobsplayce.home.att.net   e-mail -->r.fischerjr@att.net  
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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