67 N14 sidepipes on a small block

[Gerard F.]

Were N14 sidepipes an available option on a base engine 327/300 67?

The 67 AIM shows sidepipes (N14) for L36, L79 or L88. However, Noland's book (p 432) indicates 971 units of N14 "With a base engine and manual transmission, or L79".

Also, how did they handle the undercar exhaust holes in the rear valance with N14. Did they just not cut the holes, or did they use a different rear valance. Can't find anything in the 67 AIM on this, maybe I'm missing it.

Not thinking about adding side exhaust to my 67 base engine car, it is just that the question came up, and inquiring minds would like to know.

[Larry M.]

Re: 67 N14 sidepipes on a small block

Gerry:

I believe that sidepipes were available for the 327/300 HP base engine as well as for the 327/350 HP engine. The exhaust manifolds were the same for both engines. The exception code (ECL) for small block manual transmission sidepipes was N14AA and for the big blocks with manual transmission was N14AB. The corresponding automatic transmission cars had AC and AD. The ECL was how Nolan was able to split out the various groups.

Regarding the rear valance, I believe that there was one for under-car exhaust and another one (without the cut-outs) for the side pipe cars. I don't believe that the line workers cut out the valance holes for every regular exhaust Corvette. To much work and to much room for error. And originally there were a lot more of the under-car exhaust than the N14 option.

I'm certain we will hear from some others when they get back to their computers after the banquet tonight.

Larry

[Ralph E.]

Re: 67 N14 sidepipes on a small block

Looking at Noland's book, it looks like 327/300HP cars had side pipes. How can it be determined that AOS 327/300 cars did not have side exhaust?

[Larry M.]

Re: 67 N14 sidepipes on a small block

Looking at Noland's book, it looks like 327/300HP cars had side pipes. How can it be determined that AOS 327/300 cars did not have side exhaust?

Ralph:

This has been discussed here MANY times. Check the archives for details.

However, the short answer is that only one tool to notch the birdcage for mid-year sidepipes existed, and that tool was located in St Louis and used exclusively for the St Louis bodied cars.

Larry

[Jeff M.]

Re: 67 N14 sidepipes on a small block

Jerry,
I have a survivor 300hp with side exhaust. I don't know that there was alot of them though. When I had it flight judge last year some of the officials where surprised to see it on my base engine tank sticker. One of the officials said he has been judging for twenty years and it was the first one he had seen, so not a popular combo for sure.
Jeff

[Jack H.]

Re: 67 N14 sidepipes on a small block

The side exhaust option 'exploded' upstream in the mfgr process. It had to...it affected the power train/rolling chassis as well as the body. So, side exhaust cars were known from the git go and NO, line workers didn't drill holes in the rear valance! They installed the rear valance panel without holes for thru-frame exhaust during body build. Evidence of manual cuts in the rear valance is one tell tale of dealer/owner inspired side exhuast option addition...

[Ernie F.]

Re: 67 N14 sidepipes on a small block

Side exhaust cars used rear exhaust panel p/n 3863752 which did not have any holes in it. Standard exhaust cars used rear valance panel 3874799 for 66-67 which already had the holes in it.

One item people over look is the rocker molding tabs welded to the car! To install side exhaust on a car you have to cut or bend these out of the way.

Side exhaust was available on standard cars and the pipe p/n was 3877215 - 6. This pipe had a 2" header on it to match the exhaust manifolds for the small block cars.

Also, if you are going to adding this to your car, don't forget to remove the rubber seal from the splash shield, if you don't they will melt.

[Tim G.]

Re: 67 N14 sidepipes on a small block

A beautiful white/red '67 coupe with 13,000 original miles was owned by a local friend two years ago. This car was documented with the original window sticker, tank sticker and dealer bill of sale. It's very ironic that another friend purchased a nice original paint, unrestored base motor sidepipe coupe within the past two weeks. We looked at this car and assumed that the sidepipes were added. The car had never been apart and it was definitely properly prepared from the factory for sidepipes. Being a rather neglected original car, it was easy to determine that this 1966 coupe truly was an original sidepipe car. He's looking forward to having it judged, I'm sure it will be viewed with speculation, but it is a base motor car with sidepipes.

[Ralph E.]

Re: 67 N14 sidepipes on a small block

A beautiful white/red '67 coupe with 13,000 original miles was owned by a local friend two years ago. This car was documented with the original window sticker, tank sticker and dealer bill of sale. It's very ironic that another friend purchased a nice original paint, unrestored base motor sidepipe coupe within the past two weeks. We looked at this car and assumed that the sidepipes were added. The car had never been apart and it was definitely properly prepared from the factory for sidepipes. Being a rather neglected original car, it was easy to determine that this 1966 coupe truly was an original sidepipe car. He's looking forward to having it judged, I'm sure it will be viewed with speculation, but it is a base motor car with sidepipes.

Tim,
I need to ask. St Louis or AOS car body?
I'm sure both must be St. Louis, right!

[Tim G.]

Re: 67 N14 sidepipes on a small block

Most definitely a St. Louis car.

[Steven B.]

Re: 67 N14 sidepipes on a small block

I was fortunate to see a 300 HP side exhaust car in '67 that was ordered and delivered that way. Black/black coupe, 4 speed, 3.36, AM/FM, redlines.