Pontiac Cylinder Head Casting Number Location at John Janssen blog

Pontiac Cylinder Head Casting Number Location. Always have your chamber volume measured, especially if you will be pushing the. A common location was on the passenger side rear of the block, down below the deck, on top of the flange where the transmission/bell housing bolts up. Never assume that the volume is at stock spec. The may 7, 1973 changeover date is motor unit number 709986 assembled on or about may 7, 1973. All pontiac heads oiled the rockers. In 1973 pontiac started stamping extra numbers (1/4 tall) on their heads.these head numbers represented chamber sizes.they are usually stamped on the machined pads by the valve. In my case, my gto's. No h stamp on early 1973 heads. The small soft plug above the water channel blocks off the ends of the oil passage cast into the head that feeds oil to the rocker studs. In 1973 pontiac started stamping extra numbers (1/4 tall) on their heads.these head numbers represented chamber sizes.they are usually stamped on the machined pads by the valve. “7f6” is the code for a 1972 455 h.o. The area above the two center exhaust ports was a popular location for the casting numbers.

The small soft plug above the water channel blocks off the ends of the oil passage cast into the head that feeds oil to the rocker studs. Never assume that the volume is at stock spec. No h stamp on early 1973 heads. Always have your chamber volume measured, especially if you will be pushing the. In my case, my gto's. All pontiac heads oiled the rockers. “7f6” is the code for a 1972 455 h.o. A common location was on the passenger side rear of the block, down below the deck, on top of the flange where the transmission/bell housing bolts up. The may 7, 1973 changeover date is motor unit number 709986 assembled on or about may 7, 1973. In 1973 pontiac started stamping extra numbers (1/4 tall) on their heads.these head numbers represented chamber sizes.they are usually stamped on the machined pads by the valve.

HighFlow Pontiac Cylinder Head Packages High Performance Pontiac

Pontiac Cylinder Head Casting Number Location Never assume that the volume is at stock spec. All pontiac heads oiled the rockers. In 1973 pontiac started stamping extra numbers (1/4 tall) on their heads.these head numbers represented chamber sizes.they are usually stamped on the machined pads by the valve. Always have your chamber volume measured, especially if you will be pushing the. The small soft plug above the water channel blocks off the ends of the oil passage cast into the head that feeds oil to the rocker studs. The area above the two center exhaust ports was a popular location for the casting numbers. In my case, my gto's. In 1973 pontiac started stamping extra numbers (1/4 tall) on their heads.these head numbers represented chamber sizes.they are usually stamped on the machined pads by the valve. No h stamp on early 1973 heads. Never assume that the volume is at stock spec. The may 7, 1973 changeover date is motor unit number 709986 assembled on or about may 7, 1973. A common location was on the passenger side rear of the block, down below the deck, on top of the flange where the transmission/bell housing bolts up. “7f6” is the code for a 1972 455 h.o.