6E-12
1977 PONTIAC SERVICE MANUAL
MAN IFOLD VACUUM
PORTED VACUUM
Fig. 6E-20 V8-350 and 4 0 3 C.I.D., VIN Codes R and K, Low Altitude
PVC FILTER
7
/-BP-EGR
TO TRANS.
(NOT USED
PORTED VACUUM
3265
Fig. 6E-21 V8-350 and 4 0 3 C.I.D. VIN Codes R and K, High Altitude