1961-1964 All Pontiac 389 / 421. 1961-1964 All V8 6.4L, 6.5L, 6.9L 389 AND 421 CID. Pro-Tork starters are RATED AT 1.4KW and test out at approx 1.5KW (Approx 2+HP) Equipped with Nippon-Denso motor with gear ratio of 4:1 (most others are 3:1), and are 40% lighter than the OEM standard starter.
