Looking to purchase a driver side exhaust manifold for 66 Oldsmobile Cutlass with 330cid. Would like it shipped to Dallas TX thanks. My current one has a broken ear at the power steering pump and has a horrible exhaust leak.

 

I should have one; have a casting #? Thanks, Bob.

 

380001is D/S manifold that goes with a crossover
if Bob doesn’t have, I should have few to choose from, if my memory serves, pre68 didn’t have the thematic coil valve if that matters on your build
Brett

 

We have both sides in museum condition. They are off of a 330 Cutlass. Included are the all important "collars" or flanges. They are different sizes. Please see pictures. We have these advertised elsewhere for $400 for all of it. You can have it all for $300 plus shipping. We are in LA, so we're not TOO far away shipping-wise.
Here is our ad and pics for these parts: 271 Exhaust manifolds V-8- (Pair) Oldsmobile for small block. (271)

Here are a pair of 1967 Oldsmobile 330 V-8 exhaust manifolds off of my personal ‘67 Cutlass Supreme. There are in extremely nice condition. By the way, check out my “new” fancy shmancy 442 exhaust pipes. BOO-YAH, BABY! Finally got them.

CONDITION-WISE. OK, back to the manifolds. The donor car is a lifelong bone dry San Fernando Valley, California rust free car. Therefore, the manifolds do not suffer from that god awful pockmarked-to-death syndrome that so many manifolds get back in the rust belt. This car was so freaking quiet. It had single exhaust with a stock muffler and even a resonator. The car idles so smoothly that you couldn’t even hear the exhaust.

Not anymore! Now it’s a roaring brute with those 442 mufflers. These are in truly spectacular condition. The exhaust valve butterfly thingee is velvety smooth with just the right tension on the return spring. The counter weight seems perfect, too.

All 3 of the all-too-important “rings” or “collars” are there, too. Muffler shops don’t seem to have many of these any more. I don’t know why. They are absolutely critical. They are 2 different sizes. None of the 6 threaded holes are stripped or wonky. The correct size bolt screws right in there really easily. There are no broken off or rusted to death unremovable studs to fret over. I had these professionally sandblasted, and then coated in several light coats of that VHT brand header paint stuff. They look gorgeous.

The flat surfaces by the exhaust ports are nice. The part numbers are as follows: the driver’s side reads 380001 LH, and the passenger side reads 381921. OK, interchangeability wise, I will quote from the 1974 edition of the Hollander interchange manual in a minute. But first, a generalization.

Olds manifolds are all quite similar, unlike Pontiac. There are a few wacky exceptions like the awesome ’65 and ’66 Starfire dual exhaust driver’s side, and the excellent 1969 and up big block in the Cutlass chassis variety. Here's my “generalization”. All small block Olds engines, starting in 1964 with the 330, and going up thru 350 in 1968, and 403 in 1977, and finally the wimpy 265 and 307 of the disco/smog era are all the same basic architecture. Any old manifold should fit any old cylinder head in any old car, except Toronado.

These will even work on big block engines. I personally currently own a 1970 Cutlass with a 1969 455 engine, and the previous (obviously really desperate) owner decided to run the stock 1970 350 driver’s side manifold, and because he wanted easy to do dual exhaust, he installed a 403 Toronado manifold on the passenger side. Yep! Small block Toronado on one side and 350 on the other side in a big block Cutlass chassis car. The car has great sounding dual exhaust, but I am sure it is a bit restrictive at higher RPMs.





PICTURE THIS

PICTURE THIS

PICTURE THIS