[HSSS427]

As part of my search I came across this listing of the engines in various Cobra models:


Ford Engines Used in the Shelby Cars
Author: Carroll Shelby (more...)

1965 GT350 Block C5AE-6015-E 6 Bolt; HIPO , Thicker Main Caps
1966 Cobra 427-CSX3101-CSX3199 Block C5AE-A 1965 center oiler
transition block; press in freeze plugs, solid lifters
1966 Cobra 428-CSX3200-CSX3300 Block C6AE-B 428 solid lifter Police
Interceptor
1966 GT350 Block C5AE-6015-E 6 Bolt; HIPO , Thicker Main Caps
1967 Cobra 427-CSX3301-CSX3360 Block C5AE-H 427 side oiler block,
screw in freeze plugs
1967 GT350 Block C5AE-6015-E 6 Bolt; HIPO , Thicker Main Caps
1967 GT500 Block C6ME-A or C6ME Bore is 4.13 std
1968 GT350 Block C8OE-6015-A standard 302 block
1968 GT500 Block C7ME-A Bore is 4.13 std
1968 GT500KR Block C7ME-A 428 Cobra Jet
1969 GT350 Block C9OE-6015-B standard 351 windsor
1969 GT500 Block C7ME-A 428 Cobra Jet
1970 GT350 Block C9OE-6015-B standard 351 windsor
1970 GT500 Block C7ME-A 428 Cobra Jet

Courtesy of
Jim Elsmore
NVSAAC.com