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Anubis
01-18-2011, 08:51 AM
Hopefully some of the BBO guys can help me out with a few questions....

* What is the value of a 71-72 Olds W30 455 aluminum intake?
* Are X,Y exhaust manifolds any good? What are they worth?

Thank you

joe_padavano
01-18-2011, 09:38 AM
Hopefully some of the BBO guys can help me out with a few questions....

* What is the value of a 71-72 Olds W30 455 aluminum intake?
* Are X,Y exhaust manifolds any good? What are they worth?

Thank you

If you are talking about the X/Y manifolds used on the 1968 A-body cars, they are open log intakes. Really only worth something for a stock 1968 restoration.

scottb
01-18-2011, 10:17 AM
I've seen the intakes sell in the last year or so for anywhere between $800 and $2000, depending on condition. I've seen them advertised higher, but I don't know of any that actually changed hands at that price.

Anubis
01-18-2011, 01:31 PM
I've seen the intakes sell in the last year or so for anywhere between $800 and $2000, depending on condition. I've seen them advertised higher, but I don't know of any that actually changed hands at that price.

Thanks,

That aligns with what I've been told. It's probably a tough piece to sell though.

Anubis
01-18-2011, 01:36 PM
If you are talking about the X/Y manifolds used on the 1968 A-body cars, they are open log intakes. Really only worth something for a stock 1968 restoration.

Thanks Joe,

So if I had to use them for a moderate build would they be a poor choice? From a performance standpoint how do they compare with the rest of the factory manifolds?

joe_padavano
01-18-2011, 01:40 PM
Thanks Joe,

So if I had to use them for a moderate build would they be a poor choice? From a performance standpoint how do they compare with the rest of the factory manifolds?

There are the W/Z manifolds with the divided runners, and then there's everything else. Open log manifolds are open log manifolds. Nothing special.

Eightupman
01-18-2011, 02:03 PM
Hopefully some of the BBO guys can help me out with a few questions....

* What is the value of a 71-72 Olds W30 455 aluminum intake?
* Are X,Y exhaust manifolds any good? What are they worth?

Thank you

I sold a PAIR of W-30 manifolds and regret for EVER selling them both. they are not easy to come by (the REAL ones) but there are repops now for $500. Are you 100% sure its a real deal manifold? There is something missing if its a repop. I'll tell you even the one that I had with some issues i got very very close to 4 digits for.

PM me if you are interested in selling it. I'll not resell this one if I get it.

John

Anubis
01-18-2011, 02:38 PM
I sold a PAIR of W-30 manifolds and regret for EVER selling them both. they are not easy to come by (the REAL ones) but there are repops now for $500. Are you 100% sure its a real deal manifold? There is something missing if its a repop. I'll tell you even the one that I had with some issues i got very very close to 4 digits for.

PM me if you are interested in selling it. I'll not resell this one if I get it.

John

John,

I have been led to believe it is an original piece. How can I tell for sure?

Eightupman
01-18-2011, 03:08 PM
John,

I have been led to believe it is an original piece. How can I tell for sure?

Its no secret. Look for the date code cast in the back side. Then to further determine the year, does it say Olds or Oldsmobile on the top side...

Repops do not have the date code.

John

Anubis
01-18-2011, 03:19 PM
Its no secret. Look for the date code cast in the back side. Then to further determine the year, does it say Olds or Oldsmobile on the top side...

Repops do not have the date code.

John

It says "OLDS" then below slightly to the right it says "W-455"
I'll check for the casting date code to verify.

Thanks

joe_padavano
01-18-2011, 03:22 PM
Then to further determine the year, does it say Olds or Oldsmobile on the top side..

Actually, 1970 could have either. Best bet is the casting number.

1970 used 406115
1971-72 used 407570

70W-32
01-19-2011, 08:01 AM
Joe
Is this an X manifold?
It has the divided ports, just like the W/Z's, I have no idea what it came off off, and I no longer own them, so I cant get any other info, but definitely 4 seprate runners
The other manifold is a Z
http://i37.photobucket.com/albums/e85/strtracer347/ex-manifolds007.jpg
http://i37.photobucket.com/albums/e85/strtracer347/ex-manifolds008.jpg?t=1295450136

joe_padavano
01-19-2011, 08:14 AM
Joe
Is this an X manifold?

Well, there are actually two different "X" casting mainfolds, which makes it confusing. The 1968 X manifold is casting number 389269 and is an open log manifold. The 1973-74 X manifold is casting number 412287 and this one DOES have divided runners. The 412287 manifold is a good substitute for the W manifold. I can't read the casting number in your photo, but 73/74 cars used X/Z manifolds.

Anubis
01-19-2011, 10:40 AM
Well, there are actually two different "X" casting mainfolds, which makes it confusing. The 1968 X manifold is casting number 389269 and is an open log manifold. The 1973-74 X manifold is casting number 412287 and this one DOES have divided runners. The 412287 manifold is a good substitute for the W manifold. I can't read the casting number in your photo, but 73/74 cars used X/Z manifolds.

Can they be used with Edelbrock heads?

scottb
01-19-2011, 12:12 PM
Can they be used with Edelbrock heads?

If you want to, yes.

joe_padavano
01-19-2011, 12:55 PM
If you want to, yes.

Beat me to it. :D

One of the features and restrictions of the E-brock heads is that they kept the stock exhaust flange location and shape.

Bradbutlernc
01-19-2011, 07:43 PM
The manifolds that came off my 403 had the 4 port holes like that, i figured they were nothing special and threw them in with the bonneville when i scrapped it.

Anubis
01-19-2011, 07:55 PM
The manifolds that came off my 403 had the 4 port holes like that, i figured they were nothing special and threw them in with the bonneville when i scrapped it.

Similar maybe but not collectible. With the cross over outlet, the 403 manifolds are not set up for dual exhaust.

Thanks everyone for your input :D

70W-32
01-20-2011, 08:53 AM
Can they be used with Edelbrock heads?

Why would you want to choke a set of Edelbrocks with a stock cast iron exhaust manifold?

Anubis
01-20-2011, 10:24 AM
Why would you want to choke a set of Edelbrocks with a stock cast iron exhaust manifold?

Good question.

Remember the guy with the supposedly experiemental Olds 455? Well, I bought the engine and trans last night. To my suprise, it has X & Z exhaust manifolds on it in addition to the W30 intake. I figured the price I paid was worth those parts alone. Eventually it will make it's way into my 86' and I am not excited about buying BBO headers for it if the X/Z manifolds have "good" flow characteristics.

joe_padavano
01-20-2011, 11:30 AM
Good question.

Remember the guy with the supposedly experiemental Olds 455? Well, I bought the engine and trans last night. To my suprise, it has X & Z exhaust manifolds on it in addition to the W30 intake.

Didn't we figure out that this was a 1973-74 motor? The X/Z manifolds would be consistent with that.

Anubis
01-20-2011, 04:50 PM
Didn't we figure out that this was a 1973-74 motor? The X/Z manifolds would be consistent with that.

We suspected it was a 73-74 but confirmed the block was a 72'. The guy I bought it from insists he bought it as a crate engine from GM and was told it had special parts on it (I guess that's where the "experiemental" came in :nuts: ). In either case I've pulled some numbers off it....maybe you can confirm what www.442.com says about these parts. It looks like someone put this thing together with some left overs.....Too bad they used J heads.

Block VIN is 32M701741 1972 455
W-455 Aluminum Intake = casting # 406115 1970 W30 455
LH Exhaust manifold X with divided runners = casting # 412287 73'-74' 442, W30
RH Exhaust manifold Z with divided runners = casting # 402294 69'-72' 442, W30

84 H/O
01-30-2011, 11:13 AM
I'd be interested to see which cam and pistons it has in it.

Anubis
01-30-2011, 11:40 AM
I'd be interested to see which cam and pistons it has in it.

Me too. I'm hoping for high compression pistons but preparing for the worst and suspect a standard issue 72' shortblock. I'll find out next week when I take the J heads off. One thing for sure though is that this thing is low mileage like the previous owner claimed. It looks like new inside :tup:

DennisG.
02-03-2011, 01:04 PM
Whats the code and numbers off the tag on the trans ?

Anubis
02-03-2011, 01:58 PM
Whats the code and numbers off the tag on the trans ?

It's an 1970 OK code TH400 (vista cruiser or 98'??) It came with a tail shaft mount hurst shifter :tup: