cam gear
well.. these guys are pretty dead on.
a. yer dumb for buying something without:
1. researching it (finding out which company makes the best one... AEM ain't it (it only has 3 adjuster screws making it unstable and suceptable to slipage)
2. Knowing what it does (it adjusts the "cam timing" this is generaly worthless on a SOHC motor. because by advancing or retarding the intake timing you do the opposite to the exhaust)
The answer is: You should send back the camgear because
a. it's the worst one on the market
b. even if it were the best one it would not do anything (1-2 hp is doing nothing if the temperature raises by so much as a degree you've already lost your new hp's)
c. to get those 2-5 hp (im being generous now) you'd need to spend at least $100 to get someone to tune it on a dyno. (to answer your question you either advance (lift is earlier) or retard (lift is later) your cam-timing. you then run it on a dyno to see what setting gives the most power (you should also be fiddling with the ignition-timing and fuel maps for real results (4-8 hp on a DOHC motor)
get a stock cam gear it's more solid and reliable than the aem unit. if your set on getting a pretty one then get a spoon or any other company that uses AT LEAST 4 adjuster bolts (spoon has 5 or 6)
the underdrive pulleys as said will create premature wear and poor performance out of all of your accesories. (accesories like alternator and a/c and power steering are all designed to give their steady output at about 2000 rpm but with underdrive pulley's they will be UNDERDRIVEN and hence your alt. probobly won't put out good amps till your reving at about 3500-4000 rpm. and if you have an amp or any kind of accesories (lights on at night) the battery MIGHT drain. the a/c will suck till your at hi-revs and the power steering well.... probobly won't be that bad.
just pull all your accesories except your alternator if you want more power.
as far as the power gain claims they're probobly true for another application. one tipicle techique used by K&N filtercharger systems is an add that claims 15-20 hp peak gain.
is it true... ya if your putting it on a Corvette with 385 hp.
the moral of the story is LEARN befor you SPEND
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