0 207 GASKET Crankcase Front End Cover 37 57 ALL CORV 6 cyl 12 attach holes 838206 1 15 55 57 ALL CORV 8 cyl 10 attach 2 dowel holes 3704210 1 15 0 213 SEAL Crankcase Front End Cover I 35 36 ALL graphited cork 1 1 D x 2 O D 837656 1 15 37 57 ALL CORV 2 O D stamped 3835946 3835946 1 1 25 0 239 CRANK Starting 37 47 ALL 48 COMM UTIL plain end 33 overall 3661378 1 1 15 0 269 HEAD Cylinder 33 ALL exc CC w valve guides cast 836961 836960 1 41 25 37 40 ALL w valve guides cast 838773 838751 1 47 85 41 49 ALL 50 53 ALL w 216 w valve guides cast 3835517 3835543 1 47 85 NOTE When 3835543 is used for replacement on 1941 49 it will also be necessary to use 45 degree exhaust valves SO 52 ALL w 235 w valve guides cast 3835909 3835908 1 47 85 55 56 COMM UTIL 8 cyl w valve rocker studs cast 3837065 3729787 2 32 75 55 PASS CORV 8 cyl 56 PASS 8 cyl exc 4BC dual 4BC w valve rocker studs cast 3837064 3729786 2 32 75 56 PASS CORV w dual 4BC w large ports 3734029 2 41 25 56 PASS CORV w 4BC w valve rocker studs cast 3725306 small ports 3729785 2 32 75 57 ALL 8 cyl exc 2 TON 4BC dual 4BC cast 3731554 3739269 2 32 75 57 PASS w 4BC cast 3731539 3739270 2 32 75 57 PASS w dual 4BC 57 CORV cast 3740997 3741459 2 32 75 57 2 TON 8 cyl cast 3731556 3739271 2 32 75 53 55 CORV 6 cyl UNIT consists of valve guides seats and temp gauge reducing bushing 3836265 l 47 85 53 57 ALL w 235 UNIT consists of valve guides seats and temp gauge reducing bushing cast 3836848 37304151 1 47 85 54 57 ALL w 261 UNIT consists of valve guides seats and temp gauge reducing bushing 3730416 1 47 85 NOTE 838539 Seat must be used on iobs w o hydraulic valve litters TNOTE When used on COMM models 18 hole must be drilled for oil cooler line I I 0 283 GUIDE Inlet and Exhaust Valve Stem 34 40 ALL exc DC inlet 3 length straight sides 3688758T 6 55 41 57 ALL CORV 6 cyl inlet 1 1 D x 94 O D 3708168 6 55 34 40 ALL exc DC exhaust 2 length straight sides 368875965 6 50 41 57 ALL CORV 6 cyl exhaust 2 length straight sides 3688761 6 50 NOTE To obtain proper valve stem clearance guides must be finished with 343 hand reamer after installation in cylinder head TNOTE When installing 3688758 on 1934 36 jobs use 837539 seat in place oi 835811 collar GBNOTE When installing 3688759 on 1934 36 jobs use 838539 seat in place of 83581 1 cbllar 0207 0 283 136