I revved up the engine of my 65 289 coupe and now the cars runs like crap it use to be a really smooth running engine but now the exshaust sounds bad it the best way to describe it is is that it has a whooping like feel and sound and the car vibrates bad.
It has a 4bl carb last time i revved it up one of the rocker arms came loose. It has been running rich cause i smell it all the tme y i am driving.

 

What carb does it have?

 

sorry i always leave somithing out holly 650 4bl
could it stuck open or a choke stuck i hate carbs cause they r so hard for me to figure out

 

any ideas

 

Have you checked your timing?