PONTIAC HEAD CHART
CASTING
NUMBER 		YEAR & FACTORY APPLICATION CHAMBER
VOL# CC'S		 EXHAUST
PORT 		NOTEWORTHY
ATTRIBUTES
528511 1958 370 62 D-Port 1.88/1.6 55-60 INT MAN
538177 61-62 389 62 D-Port 1.88/1.6 61-64 INT MAN
543797 63 389 62 D-Port 1.88/1.60
9770716 63 421 HO,64 GTO 65 D-Port 1.92/1.66
9771980 63 421 SD 64 D-Port 2.02/1.76
77 65 GTO, 65 421 HO 65 D-Port INTAKE MANIFOLD BOLT PATTERN IS THE SAME FOR ALL 65-79 HEADS.
093 66 389 GTO 65 D-Port
670 67 400 GTO 72 D-Port
97 LATE 67 RA GTO 65 D-Port ALL 67 & UP HEADS HAVE 2.11/1.77 VALVES UNLESS OTHERWISE NOTED
37 EARLY 68 RA GTO 72 D-Port
96 LATE 68 RA GTO 72 ROUND
62 68 & 69 GTO AUTO TRANS 75 D-Port
16 68 GTO MANUAL TRANS 72 D-Port
17 68 350 TEMPEST 72 D-Port 1.96/1.66
18 68 350 HO 68 D-Port 1.96/1.66
47 68 & 69 350 AUTO TRANS 72 D-Port 1.96/1.66
48 69 RA3 400, 350 HO 68 D-Port
722 69 RA4 GTO FBIRD 72 ROUND TALL INTAKE PORT
12 70 400 RA GTO FBIRD 72 D-Port
13 70 400 GTO GP 72 D-Port
614 70 RA4 GTO FBIRD 72 ROUND TALL INTAKE PORT
64 70 455 HO GTO GP 87 D-Port
96 71 400 GTO GP 96 D-Port
66 71 455 ALL 4BBL 114+ D-Port
191(797) 71 455 HO 108-111 ROUND TALL INTAKE PORT
94 71 350 ALL 89 D-Port 1.96/1.66
7K3 72 400 ALL 4BBL 96 D-Port LARGE EXHAUST CROSSOVER OPENING ON 72-79
7M5 72 455 114 D-Port
7F6 72 455 HO 108-11 ROUND TALL INTAKE PORT
7H1 72 350 89 D-Port 1.96/1.77(ODD)
46 73, 74 350 89 D-Port 1.96/1.66
4X,4C 73, 74 400 ALL 96-111 D-Port 2.11/1.66
16 73, 74 455 SD 108 ROUND TALL/WIDE INT PORT
6X

75-79 350 & 400 ALL
75-76 455

 see chart below D-Port 2.11/1.66
5C,5X,5G 75-76 455, SOME 350 93-114+ D-Port 2.11/1.66
EDELBROCK PERFORMER RPM ALUMINUM 72 or 87 ROUNDPORT FLANGE 2.11/1.66 (1.77 optional)
HEAD C.C.'S ARE APPROXIMATE DUE TO PRODUCTION VARIANCES


OTHER SPECIAL CASTING INFORMATION

YEAR OF APPLICATION ENGINE CU. IN. VALVE SIZES CASTING NUMBER ADDITIONAL STAMPING I.D. NUMBER CHAMBER VOLUME CC'S
1975-76 400 2.11/1.66 6X 8 100.04
1975-76 455 2.11/1.66 6X 6 124.51
1977 350 2.11/1.66 6X 4 93.74
1977 400/W72 2.11/1.66 6X 4 93.74
1977 400 2.11/1.66 6X 8 100.04
1978 400 2.11/1.66 6X 8 100.04
1978-1979 400/W72 2.11/1.66 6X 4 93.74

HEAD STAMP LOCATION ON PONTIAC HEADS


CLICK IMAGE FOR LARGER VIEW

There are many questions regarding the types of Edelbrock Aluminum Pontiac Heads. They can be quite confusing. Here at Butler Performance we try and give you the knowledge to distinguish the head types and assist you in selecting the correct head for your application.

The first question is the ability to distinguish between the two types of heads. Below is a picture of the Edelbrock Round Port and D-port heads side by side. One would notice that the round port actually looks like a sideways "D" that is pointing upwards. This is not a "D-Port" head but a round port instead. The d-port head looks like a set of "D"'s mirroring each other, in other words back to back.  The round port heads take a round header flange.

 

Click Here for the Edelbrock Aluminum Head Installation Sheet

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