I'm looking for factory cast exhaust manifolds for a small block Oldsmobile 330/350. The 1967 Delmont came with a 330 then in 1968/70 a 350 was available. I need at least a drivers side. I'm wanting to put a 350 in one of my C bodies.

 

I didn't realize the small block manifolds were different between the A and B body cars. Do you know the casting numbers? I've got a stack of manifolds, but suspect most if not all came from A-body cars.

John

 

Hello John, the 1965 through 1970 B/C bodies have "rear" steering box. The driver side exhaust manifold has a center dump crossover pipe to join the passenger side exhaust manifold. The small block A body driver side exhaust manifold is rear dump because the steering box is forward. I don't have any numbers but I will try to find some. Thanks for the reply. Ken

 

Ken, I just recently happened across the original manifolds from my '68 Delmont 350 convertible. Found them in a box of Olds stuff in a corner of my garage. They looked to be in good shape, but they'll be heavy to ship. I'll try to get you pics on Monday.
Glenn

 

Hello Glenn, thanks for the reply. I see your near Buffalo. I was at the Falls 3 weeks ago. Took my Grandkids on the falls boat ride for their first time. I'm near Warren, OH. Looking forward to the pictures. Thanks again, Ken

 

Ttt

 

The 65-70 big car LH single xst manifold was a center dump with ID "A"

The SB unit was nearly identical with an ID of "2"

I believe these to be pretty much interchangeable but to be CERTAIN, get the one for your type engine. Outlet hole size may differ or whatnot.

RH manifold is T for BB or 3 [same as the common 4] for SB.

Don't make me consult the PN database for 6-digit casting numbers.

 

Thank you for the information Chris. I'm hoping to get the correct manifolds so I don't run into any "hickups" putting a 350 into a B/C body. Ken

 

Sorry, I got swamped with higher priorities yesterday. Life
These should work for you, right Ken?
The hot air tin is '68. All the threads are good, all bolts are included, even the original lock pieces are in the hardware bag. The flapper valve is stuck, but I haven't tried to free it. The spring is good.

If you give me a zip code, I can check on a shipping price.

 

Hello Glenn, my zip is 44481. Just let me know your price plus shipping. Thanks again

 

Guys not meaning to steal the thread but an OLDS fact: speaking of 67 Delmonts, a 67 Delmont was available with a 425, and is the only Olds that had a badge on the front fenders telling you the engine size!! Except in 68 a few Cutlass "Ram Rods" had a factory added decal-strip accross the hood and the fenders indicading a Ram Rod 350.

 

Rob, that's partially true. The 425 engine wasn't, strictly speaking, an option on the Delmont 88. The Delmont 88 425 was actually a separate model series from the Delmont 88 (which was 330-powered). That, folks, is the real reason for the little "425" emblem directly under the Delmont 88 fender scripts. While it did accurately tell the engine size, it was there to indicate a distinct 88 model series.

In '67, Olds renamed some of the 88 models and reorganized the series designations for the 88's:
35200-series was Delmont 88, which replaced Jetstar 88, and so had the 330 V8 only
35400 was Delta 88 Custom, which replaced Starfire
35600 was Delmont 88 425, which replaced Dynamic 88
35800 carried over from '66 as Delta 88

 

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You gotta love all these Oldsmobile tidbits. I learn something everyday. I have a pair of those 425 emblems, somewhere. I knew they came off of a Delmont but I didn't know "the rest of the story." Thanks for sharing.

 

I got set a nice set of manifolds off of "copper128". Great transaction. Thanks to all for the good information.