Richard Holdener
August 3, 2012

Stock vs. JPC/RGR CNC Heads

Horsepower
Stock HeadsJPC Heads
RPMStockBossStockBoss
3,000189NANANA
3,300217NA231NA
3,600253NA257257
3,900292NA298284
4,200336316351323
4,500366343379351
4,800386366402375
5,100427412451422
5,400463448485461
5,700476468495476
6,000488486509500
6,300506511533529
6,600515526545549
6,900NA534NA560
7,200NA539NA566
7,500NANANANA

Torque
Stock HeadsJPC heads
RPMStockBossStockBoss
3,000330NANANA
3,300346NA368NA
3,600367NA375375
3,900394NA402382
4,200420395439403
4,500428401442410
4,800423400440411
5,100440425465434
5,400450435471449
5,700439431456439
6,000427426445438
6,300422426444441
6,600410418434437
6,900NA406NA426
7,200NA393NA413
7,500NANANANA

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