The 4.3 V-6 is a good engine and was used in full size pickups and Blazer/Jimmys for many years. They have adequate power but may not provide much MPG difference compared to a 5.7/5.0 V-8. Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes 1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes 2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans 1947 Willys CJ2A w/F-Head engine
