Is a tripower better than a four barrel?
I take my information from the June 1995 issue of High Performance Pontiac. The article is entitled, “Four Barrel vs. Tri-power.” The authors employed the services of Jim Taylor to assist. They took a well performing 68 GTO, 428 car, 4 speed with slicks. All launches were made at 1200 rpm and shifts at 5200. Car went throught the traps at 5400-5500 rpm. The Q-Jet had was dialed in on the car. It was equipted with Edelbrock jets, rods, and high-flow needles. In other words, this carb was modified slightly to match the needs of the car. The 66 tripower was stock except that the choke plate in the center carb was removed and the jets were replaced with 70s in the center and 72s in the ends. Three runs were made with each set-up.
