This has me baffled. I have a 455 in my 69 cutlass. When I start the car the left exhaust is stronger than the right.(it has headers on it) And every now and then I get a puff sound out of it (left side). After the car warms up the exhaust seems to even out but, the left is still a little stronger than the right. Driving the car you do not notice the puff or miss as it might be. Runs real strong. I've been pulling my hair out trying to figure this out. And I don't have much hair left. Any suggestions.
Alb

 

Well since it has headers, that rules out normal operation of the heat riser.

As for suggestions? Get a hobby. You've got much too much time on your hands if you even noticed this at all, never mind investigated and thought about it.

- Eric

 

[QUOTE=Alb;648829]This has me baffled. I have a 455 in my 69 cutlass. When I start the car the left exhaust is stronger than the right.(it has headers on it) And every now and then I get a puff sound out of it (left side). . I've been pulling my hair out trying to figure this out. And I don't have much hair left. Any suggestions.

If the puff puffs start to sound like backfires look into hair replacement lol !!!

 

Do you have an H pipe? If not, get one and your problem will go away or at least you won't notice it.

 

I assume that you are standing behind your car, facing the rear of the car, between the tail pipes, listening to determine which side is louder. Turn around and face the other direction (180 deg), if the louder one switches sides, you have your answer..............

 

Poor guy is taking a beating on that question

 

Ok. Headers= separate straight from motor. Motor runs smooth. Pipes are same length. Only thing I can think of is maybe one of your mufflers has a problem or something about it creates a different result at the rear of the car. If the left is stronger AND Puffs occasionally maybe that is the one with the problem, (I'm assuming this difference you notice is larger than most of us think). I don't know if you should pursue it or not because I don't know the age of your exhaust system or what consequences result from ignoring it . Good luck.

 

If it ain't broke don't fix it.

 

Hands off hair foot on gas

 

Probably not likely but exhaust valves on the 1,3,5,7 could be sticking bad...but you would feel that

 

Ironically the OP starts his post with the phrase "this has me baffled". Personally I think that is his problem, if the exhaust is old and the baffle is rusted. It would be surprising to me that valves on that side of the motor would all or most stick.