Re: BB GM Heat Riser # 3940977
I should have referenced how they sit. I put two holes toward me and one hole away from me. The doughnut surface is facing up. The rod that the flapper pivots on is about 3:30 and 9:30 (clock reference).
I found a third, weight on the right. One has the part number on the outside face of the weight, one has nothing.
The one with the weight on the left has B35 and 2442 cast on the inside face of the weight.
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Martin Foltz
68 Camaro SS-396
L35/M20, Corvette Bronze, black vinyl top
George Olsen Chevrolet San Francisco
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