different 318 question

Mikes270dart said
What I mean by it drops off is that it no longer pulls, just makes noise. 60 mph is about 3000rpm, 70 mph is all I got. So before I make a cam decision I will run a comp test, check the timing , making sure the advance works. Don't have glass packs, the timing chain is not original, but it could be stretched. AJ I didn't understand half of what you wrote, wyrmrider if I read your thread correctly you would run the 252.
Thanks

Good info... AJ is spot on... this should not happen. I don't think it will be timing related (cam or ignition) unless the cam is off like a whole tooth. (But it could have been assembled wrong.) The carb not opening or an exhaust restriction seems most likely.

"Just makes noise"? Sputtering? Missing? Some sort of chain rattle or ...??