That 15.8 shows that those 2 bbl heads can produce power, thats an amazing time for a heavy car with 2.56 gears, shows the importance of sufficient carburation and exhaust flow. I'd be curious what it would have run with the 2bbl, single exhaust and 2 speed auto?
A hint may be that many many years ago I put a stock 1969 350 2bbl, TH400, factory style 2" duals with AC, and power steering on a dyno and it produced 150 horses at the wheels. By comparison when we dropped in a 400 4bbl YS, bone stock GTO engine into the car (same exhaust, trans etc) it put 235 hp to the wheels. (neither was tuned in any sense, just decent running engines run as they ran).
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My Break Away Squad
1969 Fbird (Base, 350 & Sprint Cvt’s - 400HO & TA Hardtops)
1969 LeMans (2dr & 4dr Hardtop and a Cvt)
1969 LeMans Safari 2 seat Wagon
1969 GTO (2 Cvt, 2 Hardtops & Judge Hardtop)
1969 Catalina (3 Cvt’s & a 2dr hardtop)
1969 Ventura 2 Seat Wagon
1969 Executive 4dr Sedan
1969 Bonnie Cvt
1969 Bonnie 3 Seat Wagon (2 of them)
1969 Bonnie Brougham (4dr Hardtop & Cvt)
1969 Grand Prix SJ (2 of them)
1969 2+2 2dr Hardtop (Canadian model)
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