How To Build A 525ci Big-Block - Big-Inch Punch

How to Build 1,700-Plus Horsepower with a Blown 525ci Big-Block

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Dyno Details

Size 525 ci
Intake Brodix HV 2000
Headers 21/8 Hedman long-tube headers with 18-inchextensions
Advance 34 degrees, pulled 1/2-degree per pound of boost
Fuel VP Q16
Carb The Carb Shop 950
Jets 82/86
Max. Torque 1,286 at 6,900
Max. Power 1,734 at 7,300
Avg. Torque 1,170
Avg. Power 1,329

Brodix BP BB-3 Xtra 380 Specs

Intake Port 380 cc
Chamber Volume 119 cc
Intake/Exhaust Valves 2.350/1.880
Exhaust Pattern standard
Valve Centerline standard

Dyno Details

RPM TQ HP
4,500 959 821
4,600 986 863
4,700 1,013 906
4,800 1,039 950
4,900 1,055 984
5,000 1,075 1,023
5,100 1,089 1,058
5,200 1,105 1,094
5,300 1,112 1,122
5,400 1,119 1,151
5,500 1,133 1,186
5,600 1,136 1,211
5,700 1,155 1,253
5,800 1,168 1,290
5,900 1,181 1,327
6,000 1,198 1,368
6,100 1,216 1,412
6,200 1,229 1,450
6,300 1,243 1,491
6,400 1,257 1,532
6,500 1,268 1,570
6,600 1,278 1,606
6,700 1,281 1,634
6,800 1,284 1,662
6,900 1,286 1,690
7,000 1,282 1,709
7,100 1,277 1,726
7,200 1,258 1,724
7,300 1,248 1,734

Flow Data

Intake Exhaust
0.200 159 134
0.300 237 182
0.400 309 219
0.500 360 254
0.600 401 280
0.700 430 301
0.800 443 306
0.900 442 311
*cfm at 28-inch H20

Cam specs

Manufacturer COMP Cams
PN 11-000-9
Type Solid roller
Valve Lift 0.700/0.700 inch, intake/exhaust
Duration at 0.050 280/290 degrees, intake/exhaust
Lash 0.022/0.024, intake/exhaust
Lobe Separation Angle 112 degrees

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