Pontiac FIREBIRD 1972 Service Manual page 520

6-8 1972 PONTIAC SERVICE MANUAL
Four compression ratios are available: 8.5:l (250 and
mou&ing pad at the right side of the block (Fig. 6-2),
307), 8.0:l (350), 8.2:l (400 and 4 5 9 , and 8.4:l (455
where the vehicle identification number can also be found
H.O.).
(Fig. 6-4). The same information for V-8 engines is located
on the machined face of the cylinder block, below the R.H.
Engine identification for six cylinder engines is facilitated
cylinder head (Figs. 6-3, 6-4).
by a letterhumber code stamped on the distributor
Fig. 6-4 Vehicle Identification Number Location