
03-10-2013, 03:08 PM
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CC Member
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Join Date: Dec 2004
Location: Kansas City,
KS
Cobra Make, Engine: jbl
Posts: 2,291
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Not Ranked
i was curious, so i pulled out the engine analyzer, and this is what it says--
using the above cams and my engine combo:
mj cam pk hp/tq 540/541, avg 416/476 10"vac at idle on 110lsa
ed cam pk hp/tq 533/533, avg 417/478 12.2"vac at idle on 111lsa
neither cam liked a tighter lsa, losing most power in the lower range, especially below 3700rpm, while gaining 1 or 2 hp/tq at the top.
the above was with 1.7 ratio on the mj cam and 1.6 on the ec cam. i put the 1.7 ratio in for the ec cam and it didn't like it, showing:
ed cam pk hp/tq 514/537, avg 405/469 11.9"vac at idle
using the 1.7 on the exhaust didn't have any effect.
i was surprised, i knew i was giving up pk power with the ec cam, but the avg was the same or better. this was in the 3000-6150rpm range btw for both cams. the 1.7 ratio really killed the top end of the ec cam.
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