so i just put a tach in my car and i was coming back from fishing and i was hauling a$$ and i was going to rev the hell out of it so i put it i second and smashed the gas down and my car was hauling intell it got around 70mph and about 5grand it would not go above 5grand.

 

oh and my car has a 350/350th with a quadrajet carb,does anybody know why my car wont rev over 5 grand oh and also at about 70 mph in drive just cruiseing the car starts to shake and surge. so if any body knows how to fix this any help would be very helpful.

Thanks Tony

 

what year do you have, and what ignition system are you running in it?

 

sounds like its running out of air.this is common with 2-barrell carbs and little heads.does it spit and sputter at 5000 or does it just quit pulling at 5000

 

its a 73 camaro SS lol it has a 350 out of a later pickup becuase trucks came with 4 bolt mains it was built about 15 years ago with fuille heads 2.02,.30 over and what ever else you do,has a four barrel carb HEI ignition all new cap rotor plugs plug wires that did not fix its problem. quits pulling at 5 grand it also has a 14inch open air cleaner which in new also.

Thanks Tony.

 

oh and also the motor is a little worn out smokes when you start it in the mourning.also runs fine in town runs smooth revs and takes off when i smash the gas,but its just in the higher speeds theat it runs like crap 65+mph it starts to lack power and shakes. if you guys need any more info let me know.

 

had to revise that last post 4 times before it worked freaking forum gets worse every day.

 

the only thing i can think of right now... is that if its not a stock ignition module, it may have rev limiter build in. when you accelerating when you hit 5 g does it feel like you hit a brick wall like a govener kick in?

 

no it trys but it takes a lot longer than it should it didnt all ways have this problem so i dont think its the ignition module.it starts to really slow down at 4600rpms and when it gets to 5 grand it sounds like it is trying but for some reason it just cant.

 

1: Timing is incorrectly set (not enough advance) Or Timing chain has play.

2: Carb is running out of fuel (fuel pump or filter) or an issue with float

3:enginecan not breath (Cat, converter or smashed tail pipe)

4: Valve floating

5: Your secondary ignition (cap rotor wires) can not fire the plugs at the higher pressure cause by the higher load on the car.