I just got this flowmaster muffler off a wrecked camaro and I don't know what series it is, is there anyway to tell??????????

 

Does it have dual outlets? If so, it's an 80 series.

 

it does have dual out lets, is the 80 series the only one that has dual out lets because the guy I got it from said it was a 40 series, but I wanted to be sure.
Thx for the info

 

If it's a dual-in/ dual out crossflow, it's an 80, otherwise, you'd need a p/n to tell.
Tim sends

 

What he said.

 

How do you get the part number there so many numbers on the muffler

 

If it's got a number similar to: 42583, it's an 80 series crossflow muffler. The fourth position should be "8" , signifying 80 series.

Tim sends
Edit: just because it has dual outlets doesn't automatically mean it's an 80 series. Depends on where the outlet is in relation to inlet. If the inlet is on one end, and dual outlets on opposite end, it's not an 80 series.

 

Only flowmasters I've ever seen with one 3" inlet and two 2.5" outlets were 80s series. 3" inlet and one 2.5" out on one side, a single 2.5" out on the other.

Also possible its an older model with 3" on all three, I've heard rumors that those existed at one time.

 

Ok the inlet is 2.50 and both the oulets are 2.50
The only # I found on the muffler were
6089547
4574914
4809812
5123502
5444197

 

If the outlets are on opposite ends of the case, it's a good bet it's an 80 series. If the outlets are on the same end of the case, it's not going to be an 80 series. Flowmaster, Inc.

Check these out. If it doesn't match one of these, you are SOL.

Tim sends

 

Ok I found the # onthe side of the muffler and it is an 80 series.