Originally Posted by rockbuggy1
my s-10 has a 350 in it now i bought this truck with this motor in it and from day one it would fly one day and the next be just a turd no pop no crack its like its not getting full throtle i know it may be to much carb but!!! it has been doing this since the second day i got it home
it had a adt. plate and a 750 edlbrock carb.& headers i was told 488 lift cam
it sounds bigger but who knows as we all know adt.plates suck i had a left over torker 2 intake and a 750 demon so i put them on it now it's worse i cant find any vac. leaks i am thinking flat cam and i know my spelling sucks if you help me with ideas you can make all the fun of me you like lol
o.k. sounds like a bad bog for sure. so if it runs really good one time and not the next, this takes all the internal damaged cams, lifters, timing components and rocker arms out of the hunt.
I would say check the total timing, it should be checked @ 5000 rpm for total timing. this being said anywhere from 34-40° total timing would be normal for compression ratio's from 10:1 to 15:1 with proper fuel.
also, your mechanical advance system could be not working. so pop the cap and make sure the rotor will move back and fourth smoothly
2nd thing is the carb it could just be to big or your excellerator pump not working and you then have a big bog and then the engine takes off after some pumping action with your foot! check the total timing?