1962 Olds 394 c.i. Dual Exhaust

[D Yaros]

Would anyone have a pic of the routing of the left exhaust pipe from the exhaust manifold on a 1962 394 c.i. engine they could send/post?

I presume it connects where the crossover pipe on a single exhaust system connects to the left manifold.

Appreciate it -

[KQQLCAT]

You will need a 64 Starfire left side manifold to make it work right. I have seen some people split the single exhaust right after the right manifold.

Pat

[Oldsfan]

Once again, a '64 Starfire exhaust manifold is not necessary to put duals on a '62. The factory used the same manifolds for single and dual exhausts in '61 and '62. The difference is in the pipe routing and the cap on the passenger side.

Paul

[KQQLCAT]

Okay I bought the NOS exhaust pipe that is used for dual exhaust and it can be done however it has so many bends and kinks in it that the restriction in flow is high.

Pat

[D Yaros]

Okay I bought the NOS exhaust pipe that is used for dual exhaust and it can be done however it has so many bends and kinks in it that the restriction in flow is high.

Pat

Any chance of posting a pic of the exhaust pipe used on driver side with duals that you bought? Also, as I too am in WI, where did you buy it, and at what cost?

Thanks -

[KQQLCAT]

I still have the pipe and did not use it. You can have it. But no garantees that it will work. I looked at it and did not like what I saw so I did not try it.

[D Yaros]

I still have the pipe and did not use it. You can have it. But no garantees that it will work. I looked at it and did not like what I saw so I did not try it.

Please send me a PM, to discuss how I can acquire it! Thanks.

[Guest Jim_Edwards]

The illustration for both dual and single exhaust systems for '61 and '62 full size cars (all models) can be found on page 8-41 of the 1961 factory Service Manual. No changing of either exhaust manifold required to convert a single exhaust to a dual exhaust. However, what one must have is the blocking plate/cap to plug the port where the crossover pipe connects on the passenger side manifold. To my knowledge no one reproduces the plate or it's correct gasket, so you'll have to fab the plate from 1/8" plate steel and cut a gasket for it from appropriate materials.

Overall, KQQLCAT's suggestion of using a driver side exhaust manifold from a '64 may be the easiest way to get the job done, but it will not be model correct and could cost you points in a judging. Plus you'll still need the cover/block plate for the passenger side.

Reminder for all owner's of '62 Oldsmobiles: The '62 Service Manual was basically an addendum to the '61 Service Manual, making the latter a must have to be able to properly service/restore any '62.

Edited May 23, 2010 by Jim_Edwards (see edit history)

[D Yaros]

Thanks for the service manual ref. I shall have to take a look. I do already have the blocking plate. What do I need in terms of gasket material, and where would I get such?