The 0-60 time for a stock(455 CU-IN) 67 Firebird is 5.5 seconds No such thing as a stock 455 67 Firebird. 455 wasn't built until 1970.
Really big.
68-72 Oldsmobile big block 455
Hard to say who's faster once you put in a non-stock engine. Corvettes never came with a 455, but it might be a fun swap.
That's the 4.0 liter pushrod V6 engine ( VIN " X " )
stock size is P235 60 16
Stock bore size 64mm Max 66.5mm
Which 455? Buick, Oldsmobile, Pontiac? The most powerful 1973 455 would be the Pontiac 455 Super Duty rated at 290hp @ 4000rpm. It was underrated, since factory stock examples were running 13.5-13.9 @ 103-107mph at the drags, which requires more than 290Hp. Car and Driver tested one with an automatic and it ran 13.751 @ 103.6 with a stock tires and a full tank of gas. The weight of a 1973 Pontiac Trans Am would require at least 350-375 hp to turn those numbers.
65% of 455= 65% * 455= 0.65 * 455= 295.75
29% of 455= 29% * 455= 0.29 * 455= 131.95
P245/75 R16 Chevy stock size
The stock tire size is 195/75/14.