TECHNICAL                                                                

Y-Block Dimensions and weights         ford-y-block.com

Bore &  Stroke          rod length  R:S ratio   pin diam  pin wt   piston wt.  rod wt.   comp. ht.

239 cu.in. 3.50X 3.10"       EBU 6.324"        2.038:1       .9122"              gr        24.06oz         680gr           1.858"

256 cu.in 3.62X 3.10"        EBU 6.324"        2.038:1       .9122"              gr        24.06oz         680gr           1.858"

272 cu.in. 3.62X 3.30"       EBU 6.324"        1.915:1       .9122"       161gr         531gr           680gr           1.768"

292 cu.in 3.75X 3.30"        EBU 6.324"        1.915:1       .9122"       143gr         555gr           680gr           1.768"

292 cu.in. 3.75X 3.30"      C2AE 6.324"      1.915:1       .9122"       143gr         555gr           695gr           1.768"

292 HD trk 3.75X 3.30"   C1TE 6.252"      1.894:1       .9122"              gr                               663gr            1.830"

312 cu.in 3.80X 3.44"       ECZ 6.252"        1.816:1       .9122"       143gr          585gr          638gr            1.768"

239 & 256 used EBU 3.10" stroke crankshaft       ford-y-block.com

272 & 292 used EC 3.30" crankshaft                   see CRANKSHAFT IDENTIFICATION

312 used ECZ 3.44" crankshaft

Rod journal diameter: all                             2.1880-2.1888" standard

Main journal diameter 239-256-272-292:   2.4980-2.4988" standard

Main journal diameter 312:                        2.6240-2.6248" standard

APPROXIMATE WEIGHTS

BARE BLOCK                                  155 pounds

LONG BLOCK                                 535 pounds

COMPLETE ENGINE                       610 pounds

CYLINDERHEAD   BARE                 49 pounds        Aluminum 24.5#

CYLINDERHEAD COMPLETE        56 pounds        Aluminum 28#                                                                                                                

CRANKSHAFT                                   55 pounds

TIMING COVER                                 16 pounds         Rebop aluminum 9 pounds

FLYWHEEL                                         30 pounds         Mummert aluminum 15 pounds

INTAKE MANIFOLD                        31 pounds          Blue Thunder aluminum 15 pounds