Hi,
I've got a 67 442 that I recently purchased. The right-side ex-manifold (see pic) is one for a crossover pipe that has the crossover pipe capped off. If I replace it with a true 442(400) manifold will the current exhaust pipe still line up with the new manifold? Will just about any big block manifold be compatible?
The left side manifold is from a newer 455 (406301) car, will other manifolds fit the car?

Thanks


Dave

 

Any correct big block dual exhaust manifolds will fit. Outlets should be the same. Correct 67 manifolds will not have center divided. However 69 to 73 divided one's will bolt right up. Just not correct.

 

Thanks, I'm thinking that my original 67 442 was faster than this one is. It had headers, cherry bombs, and a Holley spread bore.
I'd like to get this one breathing better if I could and get it closer to my original car back in 1972, so I'd wouldn't mind having a good set of exhaust manifolds.
It would be awesome to be able to swap out exhaust manifolds and not have to change any of the exhaust system.
Thanks SportCoupe

 

Holley spread bore bolt ons were worth about 15 mph on the top end, my old man says. This makes sense, as a quadrajet was an all-situations carb, and holleys can idle and do WFO well.

 

Yes, the Holley did all things well on my old car. In the winter the accelerator pump would dump copious amounts of fuel to get it started. Didn't have a choke.
The top end was wonderful. After the needle would bury past 120, it would get a second wind. No telling how fast I could go. I'll never take this car to those speeds. I think I've grown up some since then.

Koda, I have a question, what air cleaners were available in 67 for the 442's? I had the one you show in your profile, I've seen some that expose the filter element and my current 67 442 has a double snorkel. Were all three or others available?
Thanks
Dave

 

Dave, I'll give you the comprehensive answer. In 1967, I believe Oldsmobile fielded no less than 9 air cleaners on A bodies.

1. The chromed open air cleaner goes on manual transmission 442s that are neither W-30 or CCC.


2. The snorkeled closed chromed air cleaner is a carryover from previous years' styles and it goes on automatic 442s that are neither W-30 or CCC that were made for most of the production year.


3. The snorkeless "closed" air cleaner, which is really a 4 speed base and a super wide upper top with a skirt, so it's an open air cleaner with a little gentility, was implemented late in the run for automatic 442s without W-30 or CCC. My car, a Memorial Day 05E car has one. I think it was late March for the change.

If you elected to have Climactic Combustion control on your 442, or 4 barrel Cutlass, you got this version of the CCC cleaner. It has revolutionary features like a heat riser pipe and a thermally controlled vacuum motor to regulate that, as well as a second snoot that is purely vacuum controlled. If that sounds like every double snorkel or OAI cleaner since, you are correct, as those features got baked into 68 cleaners.



On the other hand, if you wanted raw horsepower, the w-30 Outside Air Induction system was there for you. Standard on W-30 package cars, both automatic and manual, and available with just the OAI and cam shaft and battery relocation kit for retrofitting your 442 into what we call a Track Pack car these days, this chromed monster was the last of the breathing out the snoots all the time, screw this quicker warming up and economy baloney, old fashioned cool that there was. Hail to the king, baby.


Two barrel Cutlasses could get a 2 barrelled CCC cleaner, include the Turnpike cruiser, which took the 442 E block, put a mild cam in it, a 2 barrel manifold, carb, and this thing on it, TH400, and 2.56 rear for a real highway miles machine.


High compression 4 barrel Cutlasses got the orange standard air cleaner.



Low compression 4 barrel Cutlasses got the black version


And 2 barrel Cutlasses, all low compression, got this guy.


There are, yet more, air cleaners for the 67 year on other models, like the Toronado and big cars.

 

You can buy reproduction stock style manifolds new from Thornton.

 

So, my double snorkel air cleaner isn't 442 original?
Also, my old memory is telling me that my original 442 engine was gold, but from looking at various pics, I'm guessing it was bronze. Were any of them gold?
The last owner got crazy with the valve cover stickers and put the correct one on and also the Turnpike Cruzer sticker.

 

That looks like a home brew air cleaner as there are no vacuum motors on the snoots. It is not correct for that year Olds, looks like an 84 H/O air cleaner, kind of.

In '67, small blocks, including inline sixes, were gold. The 425 in everything it was in, was red, except for the Toronado where it was a silvery blue, which is not Oldsmobile 70 and Up Big Block Blue, nor GM Corporate Blue of later years. The Rocket 400, from 65 to 69, was bronze in 442s and in the 67 Turnpike Cruiser. Awesome color. 442 400s often were repainted gold.

 

Thanks Koda. I had always wondered about engine colors and air cleaners. I'd like to make things look pretty original and an air cleaner is a big one. I'd like to get one like the one in your avatar as it's like my original car and it looks great. It also sounds better than the one I have when WOT.
Cheers
Dave