PRODUCTION AND SPECS FOR PONTIAC V-8 ENGINES, 1955-75 TRI-POWER * YEAR * * SIZE * * H.P.* * C.R.* * CARB * * USEAGE * 1959 389 315 10.50 3x2bbl 1960-62 389 318 10.75 3x2bbl 1964 389 348 10.75 3x2bbl GTO 1965-66 389 360 10.75 3x2bbl GTO TROPHY (EARLY HO) 1959 389 330 10.50 1x4bbl 420A 1959 389 345 10.50 3x2bbl 420A 1960-62 389 333 10.75 1x4bbl 425A 1960-62 389 348 10.75 3x2bbl 425A SUPER DUTY (EARLY) 1959 389 330 10.50 1x4bbl NASCAR 1959 389 345 10.50 3x2bbl NASCAR 1960 389 348 10.75 1x4bbl NASCAR 1960 389 363 " " 3x2bbl NHRA 1961 389 368 " " 1x4bbl NASCAR 1961 389 368 " " 3x2bbl NHRA 1961 421 373 11.00 2x4bbl NHRA 1962 389 385 10.75 1x4bbl NASCAR 1962 421 385 11.00 1x4bbl NASCAR 1962 421 405 11.00 2x4bbl NHRA 1963 421 390 12.00 1x4bbl NASCAR 1963 421 405 12.00 2x4bbl NHRA 1963 421 410 13.00 2x4bbl NHRA HIGH OUTPUT 1963 421 353 10.75 1x4bbl 1963-64 421 370 " " 3x2bbl 2+2 1965-66 421 376 " " 3x2bbl 2+2 1967 400 360 " " 1x4bbl GTO 1967 428 376 " " 1x4bbl 2+2 1968 400 360 " " " " GTO 1968-69 428 390 " " " " 2+2 1970 455 370 10.25 " " GTO 1971 455 335 8.40 " " GTO, TA 1972 455 300 8.40 " " GTO, TA 1975 455 215 7.60 " " TA RAM AIR 1967 400 360 10.75 1x4bbl GTO 1968 400 360 " " " " RA-1 1968 400 366 " " " " RA-2 1969 400 366 " " " " RA-3 1969 400 370 " " " " RA-4 1970 400 366 10.50 " " RA-3 1970 400 370 10.50 " " RA-4 SUPER DUTY (LATE) 1970 400 370 10.50 1x4bbl RA-4 1973-74 455 290 8.40 1x4bbl TA