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FULL RESULTS-CAM AND NITROUS UPGRADE FOR THE 440 RV MOTOR. BACK IN PART 1, WE GOT THE LOW-COMPRESSION, LOANER 440 UP ON THE DYNO. After a valve spring upgrade, we ran the 440 with a Holley carb, long-tube headers and Edelbrock Perf 440 intake. After running in basEline trim, it was time for power upgrades like a Comp cam and NOS/Sniper Nitrous. What were the worth? Did we mention Part 3 will have a DIY turbo!!