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Hot cams no credit

This was evident from the fact that the LM7 offered more torque up to 4,200 rpm.

Organizations must submit a detailed description of the program at least six months in advance for review by the CAM Governing Board.

The LS3 delivers a stunning 495 horsepower and 473 lb.-ft. That’s less lift on the intake side than the stock LS3 cam, but considerably more duration, allowing the valves to stay open longer to draw in more air from the rectangular-port L92-style heads.

The LS2 cam impressed with its power production, offering more than 400 hp (peak of 403 hp) and just less than 400 lb-ft (399 lb-ft).

The intent of the recertification program is to help ensure that the CAM stays current with industry issues and maintains the highest standards possible toward proper management credentials within business aviation.

We tested the LR4 and LQ4 cams, but these produced identical power to the LM7. LM7Measured out at 6,500 rpm, the early LS1 cam offered 63 hp over the LM7 cam, but the results illustrate that the gains did not come without a trade-off.

The LM7 cam offered more low-speed torque (by as much as 22 lb-ft) up to 4,400 rpm, but the LS1 cam pulled away there after.

It is interesting to note that the same cam was used on the smaller LR4 4.8L, and that combination (same heads, cam, and intake) makes peak power 300 rpm higher.