New 572 builds hp guesses
04-01-2017, 06:44 PM
#81
Platinum Member
Platinum Member
iTrader: (1)
What intake, on 02 sensors on individual cylinders i am seeing 2 points afr diff on a couple cylinder weather carbed or injected. Stagger jetting the carbs helped even it out, both the chinesium intake and the edelbrock victor did it, they still do it with extra spacer but not as bad. Not so much on top as in lower midrange. #6, #4 seems to be leanest
04-01-2017, 08:34 PM
#82
What intake, on 02 sensors on individual cylinders i am seeing 2 points afr diff on a couple cylinder weather carbed or injected. Stagger jetting the carbs helped even it out, both the chinesium intake and the edelbrock victor did it, they still do it with extra spacer but not as bad. Not so much on top as in lower midrange. #6, #4 seems to be leanest
05-05-2018, 08:15 AM
#84
Registered
ill tell you how my two 572s just dynoed.big m blocks 10.1 compression 357 afr heads bill miller intakes 1050 quick fuel carbs 650ish lift hyd cams.when i bought these two they were supposed to be ready to go but the dumbass didnt tell me that one had been hurt and they screwed up one set of heads to halfass fix the problem so one motor is down about 30 hp. i had the guys at sonnys do the best they could at porting and fixing the one set without replacing the castings,the valves have been sunk into the chamber too far.bad/hurt motor made 735hp with 655 ft lbs tq at 6000rpms and good motor made 770hp with 675 ft lbs tq at 6000rpms but motors were ran on different days so we think they may be closer in hp than dyno showed
05-06-2018, 12:10 PM
#85
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iTrader: (7)
ill tell you how my two 572s just dynoed.big m blocks 10.1 compression 357 afr heads bill miller intakes 1050 quick fuel carbs 650ish lift hyd cams.when i bought these two they were supposed to be ready to go but the dumbass didnt tell me that one had been hurt and they screwed up one set of heads to halfass fix the problem so one motor is down about 30 hp. i had the guys at sonnys do the best they could at porting and fixing the one set without replacing the castings,the valves have been sunk into the chamber too far.bad/hurt motor made 735hp with 655 ft lbs tq at 6000rpms and good motor made 770hp with 675 ft lbs tq at 6000rpms but motors were ran on different days so we think they may be closer in hp than dyno showed
Regardless that's some nice power.
07-26-2018, 08:37 PM
#87
Registered
these are in a 32 side by side fountian so very little room for headers.i run cmi etops with the 1 7/8" tubes 5" tail pipes and dry out to the tips so we ran a small dyno header on it.
