ET'S with ported J/or other iron heads SB

Coffee&Cars said
Not sure but i think it was 7.70

Pretty quick. People don’t realize.
I remember the 7.70 days on a 245/6015 M&H race masters dot junkers.
Picked up 2-3 tenths with a bigger tire, nothing else. Still spun. J heads they were water sprinklers.