67 383 2 barrel specs
Sorry, my books don't go back that far. The 67 shouldn't be far off the 69 specs I have.
The 69 383 2bbl
comp ratio 9.2:1
horsepower 290 @ 4400
torque 380 @ 2400
valve spring rated at 200 Lbs @ 1.43 in for the 2 bbl. 220 for for the 4 bbl.
Specs remained the same for 1970. Compression ratio dropped in 1970, replaced by 360 2bbl in 72. Surprised to see that 2 bbl valve springs are the same as for the 350 hp 440.
Hope this helps.