The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**PGSigns** · 02-12-2017, 10:12 PM

My 557 inch motor with Dart Big M pro block, CNC 355cc heads 4 3/8" stroke 4.500 bore and a single throttle body on alcohol made 915HP and 770 ftlbs of torque. Went 7.40 179 in the dragster. A 598 with chief heads and a single throttle body can make 1100 hp with out a lot of trouble. Not going to take that to put your truck in the mid 8 second range with no hit. We would put 200 passes on the 557 and change the valve springs.
Jimmy
Jimmy

02-12-2017, 10:12 PM	#14
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: Going to the dark side My 557 inch motor with Dart Big M pro block, CNC 355cc heads 4 3/8" stroke 4.500 bore and a single throttle body on alcohol made 915HP and 770 ftlbs of torque. Went 7.40 179 in the dragster. A 598 with chief heads and a single throttle body can make 1100 hp with out a lot of trouble. Not going to take that to put your truck in the mid 8 second range with no hit. We would put 200 passes on the 557 and change the valve springs. Jimmy Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic