Are these offroad mufflers the real deal

[Terry B.]

I just purchased a pair of offroad mufflers for my 62 (the red cheery bombs on it have a hole and need to go), these are supposed to be NOS. One has the number 3813537 stamped into the muffler and a GM sticker with part number 3813533, in addition it has 2 1 154 6 A stamped into it. The other muffler has only 6 1 225 6 A stamped on it.

I recognize 3813533 as the correct part number but don't recognize any of the others.

They look good to me but I've never seen the real deal for certain, are these the real deal?

[Lou C.]

Re: Are these offroad mufflers the real deal

Photos of real offroad mufflers.

[Mike E.]

Re: Are these offroad mufflers the real deal

Photos of real offroad mufflers.

Lou--
What are those--original take-off's or old NOS? I have some old (1977) off-roads over the counter installed on my silver 62 fuelie--I could look at those if necessary/helpful.

[Lou C.]

Re: Are these offroad mufflers the real deal

Mike, These are old NOS.

[Lou C.]

Re: Are these offroad mufflers the real deal

The receipt for these was dated 1983.

[Terry B.]

Re: Are these offroad mufflers the real deal

Lou,

Mine look just very similar to yours except that I have 3813537 where you have 3813533, I have a paper label on mine that has part number 3813533.

I'm guessing that these were either manufactured in a different time period or were the same mullflers but for Impalas rather than Corvettes.

I'm really just looking for a correct as I can get and don't want to loose points because I have a 7 rather than a 3. The judging manual, as far as I can determine, doesn't call for checking part numbers on the mufflers themselves so hopefully I'm good.

Thanks for the replies from everyone.

[Bruce T.]

Re: Are these offroad mufflers the real deal

I have a pair, left and right, 3813533 and 3813534 respectively, that I bought in November of 1975. They both have the codes, but no part numbers on them. So did originals have the part numbers on them?