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Make 561 HP Using AFR Composite Intake Manifold

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Cam Specs
CamshaftAdvertised DurationDuration at 0.050Lift (Inches)Lobe-separation
Comp XR288HR, intake2882360.520*110
Exhaust2942420.540* 
*Note: These are the lift specs for a 1.5:1 rocker ratio. With Comp’s Ultra Pro Magnum steel 1.6:1 rockers, the actual lift jumped to 0.555 inch for the intake and 0.576 inch on the exhaust.
Power Numbers
RPMVictor Jr.Titan TXSTitan TXRDifference
TQHPTQHPTQHPTQHP
3,000409234415237426243179
3,200415253417254430262159
3,400432280432279445288138
3,6004473064503084603161310
3,8004633354683394793471612
4,0004743614823674913741713
4,2004813854913924993991814
4,4004884094984175064241815
4,6004944325024405114481716
4,8005004575084645184731816
5,0005044805124875204951615
5,2005024975105055205151818
5,4004965105065215145281818
5,6004855174985325045381921
5,8004735234895404955462223
6,0004635294785474865562327
6,2004505314655504745592428
6,4004355304505494575572227
Peak Power5045315125505205591628
Avg. Power467.6424.6476.6433.7485.6441.51816.9
Parts List
Description PN Source Price
AFR Titan DPR, dual-plane 4804 Summit Racing $598.95
AFR Titan TXS, single-plane 4802 Summit Racing 598.95
AFR Titan TXR, tall single-plane 4801 Summit Racing 581.95
Edelbrock Victor Jr. intake 2975 Summit Racing 215.95
Comp hydraulic roller Xtreme E 12-433-8 Summit Racing 288.95
Comp hydraulic roller lifters 850-16 Summit Racing 209.95
Comp Ultra Pro 1.6:1 rockers 1605-16 Summit Racing 324.95
Comp billet roller timing set 7136 Summit Racing 92.95
Holley HP 850 carb 0-80496-1 Summit Racing 739.95
Quaker State, Q Horsepower 5W-20 Advance Auto 6.29 ea.
Bosch FR 6 DC+ spark plugs FR6 DC(7524) Local auto parts 16
GMPP 383 short-block 12499106 Scoggin-Dickey 3,599.95
TXS top 4651 AFR 393
TXR top 4650 AFR 393
DPR top 4653 AFR 393
SOURCES
Comp Cams
3406 Democrat Road
Memphis
TN  38118
800-999-0853
http://www.compcams.com
Summit Racing
Akron
OH
800-230-3030
330-630-0240
http://www.summitracing.com/
Scoggin-Dickey Parts Center
5901 Spur 327
Lubbock
TX  79424
800-456-0211
http://www.sdparts.com
Chevrolet Performance Parts
P.O. Box 33170
Detroit
MI  48232
800-577-6888
http://www.gmperformanceparts.co
m
Holley Performance Products
1801 Russellville Rd.
Bowling Green
KY  42101
270-782-2900
http://www.holley.com
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