Exhaust System Part # Identification?

[Gregory G.]

A complete 2-1/2" carbon steel exhaust system with GM part numbers stamped on them as they appear on the mufflers.

What year are they for?

1st set-GM 3945736

1 1 164 9 A

2nd set-GM 3945737

3 2 209 8 A

Greg

[Joe L.]

Re: Exhaust System Part # Identification?

greg-----

I think that you will find that the numbers are 3845736 and 3845737. These are the left and right rear exhaust pipe/muffler assemblies applicable to 1964-67 Corvettes with N-11 off-road exhaust.

[Gregory G.]

Re: Exhaust System Part # Identification?

Joe,

Having the part numbers stamped in them, does that make them GM Service Replacements,or Originals?

Greg

[Joe L.]

Re: Exhaust System Part # Identification?

greg------

The SERVICE muffler/pipe assemblies were the same as originals for the off-road system. There may have been some differences with respect to stamped numbers. However, I would expect that this difference, if it existed at all, was one that happened over time. In other words, if one had purchased a SERVICE system in, say, 1965, it would have been identical to the PRODUCTION pieces.

[Gregory G.]

Re: Exhaust System Part # Identification?

Joe,

The Off Road System was not available in 1963?

Can they be used for 1963's?

Greg

[Joe L.]

Re: Exhaust System Part # Identification?

greg-----

As far as I know, no 1963 models were actually built with optional the N-11 system. However, the system you have can be installed on a 1963. One caveat, though: some modification of the pipes may be necessary to clear the "tool kit" wells (in the floorbaord behind the seats).

[Gregory G.]

Re: Exhaust System Part # Identification?

Joe,

Thank you for the info.

I will be installing them on a 1964?
No Caveat for a '64.

Greg

[Joe L.]

Re: Exhaust System Part # Identification?

greg-----

No, they should install cleanly on a 1964.