[Cobra Chuck]

Originally posted by mkcobra
well, the cam is a comp extrem energy 262 490 intake 500 exhaust 290 duration mild . the distr stock MSD billet, stock springs 2 heavy silver, total advance is 36 at 3600 rpm. idle is set at 12, mechanical only model 8584.

cobra chuck , mine to seems to hit hard on the street, the TKO 5 speed with 3:55 gears make nice tire smoke launch seems easy but as it revs up it looses power. you should jump on a dyno . the great torque at the low end helps feel, but this motor should be at 350-320 at rear wheels . any more questions. thanks this is helping me think through things also . i was at first worried the cam was to small. but Edelbrocks performer 351 package is almost identical to mine and they had 400 HP as well.

mkcobra it sounds like the bump stick is ok. Of course if you flatten out the stick in the first few hours of operation that could still be the problem. If cams are going to go they usually do it early on usually in a few hours. If they are not hardened right or you did not lube it well during assembly you can flatten out a cam quick. Also you mentioned retorquing the rockers, are you sure you had them lashed right to begin with? If you are still getting the specified lift and duration on your cam (pain in the ass to check) and you have lashed or preloaded your rockers right then about the only thing left is compression check, carb. adjustments and most likely a low flow exhaust system. I would call CR and find out what the measurements are for your system and ask them about this problem. It sounds like you were already expecting a 50HP hit on the exhaust. How many hours on the engine?

Cobra Chuck