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Weiand blower manifold problems

Discussion in 'The Hokey Ass Message Board' started by Blownolds, Feb 24, 2004.

  1. Blownolds
    Joined: Mar 31, 2001
    Posts: 2,335

    Blownolds
    Member
    from So Cal

    I've got several of the early Olds Weiand blower intake manifolds made in the '60's, and they WON'T FIT the engine that the manifold is designed for, unless a 1/4" or so spacer plate is used on each intake flange! This is NOT a matter of the manifolds being for a low-deck block, as the low-deck manifolds for this application would be considerably narrower yet (the 371 intakes are about 1-1/4" than the 394 Olds). Simply put, these intakes are all a little short in width, yet by the same exact amount!!! Same result, just a tad short requiring about a 1/4" spacer under each flange. Two different engines have been tried, too.

    All these intakes have been used, so SOMEONE got them all to fit and function. I cannot imagine them being made with the idea that 1/4" inch has to be milled out of the heads or block deck! I have a friend that said something about Weiand manifolds used to require spacer plates for port nozzles, yet I have never heard of this, they weren't listed in the old '60's Weiand catalogs, and I couldn't see any in the old photos.

    Who can help solve this mystery????
     
  2. yorgatron
    Joined: Jan 25, 2002
    Posts: 4,228

    yorgatron
    Member Emeritus

    ya don't suppose it's one of those later heads on early block deals do ya?i suppose you could make friends with somebody with a vertical mill...
     
  3. BigJim394
    Joined: Jan 21, 2002
    Posts: 767

    BigJim394
    Member

    There were spacers manufactured and sold for use on the Rocket engine, though I believe they were for an application like Yorg mentioned with a head swap to an earlier block. I saw a set for sale at Hershey: they were wedge shaped, so a dead flat spacer plate, kind of like the way a header flange is made, would not work for that application.
    These adapter plates came up on a HAMB thread a year or so ago, and someone replied who had a set.
     
  4. Blownolds
    Joined: Mar 31, 2001
    Posts: 2,335

    Blownolds
    Member
    from So Cal

    No Yorgi, it seems that virtually all Weiand blower manifolds are "off". One of the gents I sold a manifold to is also reporting this problem, plus I once sold a Weiand 324 intake to a guy who also reported "something was not quite right". I don't know what the deal is, looks like a pair of 1/4 spacer plates is what it tkaes to get a Weiand intake to fit. That is just plain weird.

    I am currently looking at adapting a competition-style Kuhl or Mooneyham SBC blower intake to the 394 with spacer plates, the ports line up quite nicely. [​IMG] BB Mopar is also close and is an option. I should have made a choice and have one of these other intakes in my hands within 2 weeks. Also looking at taking this opportunity to raise my intake ports 1/2". The competition manifolds also have the burst panel provision and the "tented" floor. [​IMG]
     

  5. DON_WOW
    Joined: Feb 14, 2002
    Posts: 218

    DON_WOW
    Member Emeritus

    I dug this out of my junkpile, circa mid 70's. Don't overlook early hemi blower intakes and spacer plates. Hemi intakes are easy to come by. If ya can't buy it, build it or vice versa. Make it yourself and MEN will respect you, WOMEN will adore you and WANNABEES will be baffled. [​IMG]
     

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  6. Blownolds
    Joined: Mar 31, 2001
    Posts: 2,335

    Blownolds
    Member
    from So Cal

    Don Wow, I got your PM-- VERY VERY COOL!! I will read it more thoroughly when I get a chance and PM you back about that.

    Oh, and what exactly is this manifold/spacer combo you have pictured? BB Mopar to 394?
     
  7. DON_WOW
    Joined: Feb 14, 2002
    Posts: 218

    DON_WOW
    Member Emeritus

    Spacers are made for 331 hemi to 394. Manifold scratch made to fit direct on 394.
     
  8. 56olds-ERDY
    Joined: May 26, 2002
    Posts: 278

    56olds-ERDY
    Member

    i dont know if this pic is big enough to see.this is how much it took to get the holes to line up.nate i sent you a e-mail.let me know if you didnt get it.these spacers are close to a 1/2" thick,but im not using any gaskets soo that would probly make some differance.there actually some adaptors i bought from nate that where made for a different aplication,but work.i looked at an old weiand add in a magazine,that showed a olds with a blower.it wasnt a very good pic,and just showed mostly the front drive system.thats what it was advertising,but i didnt see any spacers,and it didnt mention anything anywhere along with the manifolds.ive been looking at pictures,and i cant see any anywhere.the part # on the intake is W0671 ,and i can tell you the ports look like there 394 size.anyone else have any ideas?
    eric
     

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  9. yorgatron
    Joined: Jan 25, 2002
    Posts: 4,228

    yorgatron
    Member Emeritus

    hey eric,when are you gonna get me some specs for that pilot bushing?
     
  10. BigJim394
    Joined: Jan 21, 2002
    Posts: 767

    BigJim394
    Member

    I have a Weiand blower manifold for the Olds that I thought I might use some day (when I could afford to have a drive built for it) and always assumed it would fit right on my 62 394. 15 or so years at the Nostalgia drags in New Jersey, I took some pix (slides) of a 34 Coupe with a 6/71 Blower on a Weiand blower manifold on a 59 Olds, and I just looked at them and can't see any spacer plates inbetween the manifold and the heads. I'll have to see if mine "fits" or would need some spacer plates.
     
  11. 56olds-ERDY
    Joined: May 26, 2002
    Posts: 278

    56olds-ERDY
    Member

    yorg,
    thanks for asking.im slow i know.im still deciding what i wanted to do.lol i was thinking of just haveing one for a 64-up fitted,but it seems like it just doesnt fit as tight on the shaft.the holes just a little bigger.i also may just have a coin type one made.ill p.m. you later with some more details.
    eric
     
  12. Blownolds
    Joined: Mar 31, 2001
    Posts: 2,335

    Blownolds
    Member
    from So Cal

    Don Wow, that's a 331 hemi manifold???? I thought those had more bolts on each side!
     
  13. Mutt
    Joined: Feb 6, 2003
    Posts: 3,219

    Mutt
    Member

  14. Blownolds
    Joined: Mar 31, 2001
    Posts: 2,335

    Blownolds
    Member
    from So Cal

    Thanks, Mutt-- I already saw it. Even though the guy says he thinks it's a Cragar, it looks like another Weiand without the name to me. Already have a big stack that will need spacer plates. I'm going to go ahead with adapting either a SBC or a BBMopar blower intake. I think it'll be a lot slicker than it sounds.

    Oh, and Don Wow-- I was right, I looked at some early hemi heads again and that intake you have is not a hemi intake. It looks more like a big block Mopar wedge intake to me. Can you PM me with a couple more pics of it?
     
  15. Blownolds
    Joined: Mar 31, 2001
    Posts: 2,335

    Blownolds
    Member
    from So Cal

    TTT for Don Wow---- Jerry, if you have any pics of the topside of that blower intake, I'd like to see them.

    I do indeed also think it's a BB Mopar wedge intake. Definitely not hemi.
     
  16. 201
    Joined: Dec 17, 2002
    Posts: 344

    201
    Member

    Sounds like you have a set of heads that someone serfaced big time to up compression or clean up defects. Had same problem on same motor on high school ride.(394 in '53 Ford). As the heads are decked, the mounting surface for the intake ports actually spreads apart. Kind of like cutting the roof off a house, removing 6 in. of vertical height from the area that met the walls, and it not fitting back where it came off of.
     
  17. Blownolds
    Joined: Mar 31, 2001
    Posts: 2,335

    Blownolds
    Member
    from So Cal

    Nope, wrong-- it's a stock virgin engine and if the heads were shaved then the bolt holes would have moved the OTHER way. I thought about the Weiand manifold having been shaved a ton, but they are ALL like that-- a full 1/4" or so short, and I've got a stack of them. And it's not a matter of them being for the 371, they aren't.

    Anyway, TTT again for Don Wow.

    I hope to have an answer soon on whether or not a modern SBC or a BB Mopar intake will adapt nicely. I'm going to try to swing by a place on Thursday hopefully. Just need to have (coff) $650-700 handy for the contemporary SBC competition intake I'm going to look at (it's got large ports, angled floor, burst panel provision, etc.). These are the ones being sold by Mike Kuhl, but I'm going over to Superchargers USA-- he also said he has some with thermostat provision. Wish me luck.
     
  18. DON_WOW
    Joined: Feb 14, 2002
    Posts: 218

    DON_WOW
    Member Emeritus

    Nate, i sent e-mail.
     
  19. backyardbeliever
    Joined: Sep 15, 2006
    Posts: 299

    backyardbeliever
    Member

    The WEIAND "WO671" blower manifolds for early Olds came in 3 variations.
    Most all are of the same casting but are machined differently for the different deck heights of the different year engines but all look the same. The three varariations should be be stamped for identification purposes either by a letter or number in the back of the manifold between the part number "WO671" and "WEIAND"
    A or 56 will denote the 303-324 manifold
    B or 57 will denote the 371 manifold
    C or 59 will denote the 394 manifold
    If your manifold has not been polished it should be stamped in this area. Otherwise these stampings may have been ground or polished off. I have manifolds stamped with letters or numbers but not both. WIEAND calls these manifolds their "TYPHOON" maniflolds. Hope this helps.
     
  20. Dago 88
    Joined: Mar 4, 2006
    Posts: 2,310

    Dago 88
    ALLIANCE MEMBER

     
  21. Blownolds
    Joined: Mar 31, 2001
    Posts: 2,335

    Blownolds
    Member
    from So Cal

    Surprised to see this old thread dug back up. I have since gone with an Indy Mopar 383 competition blower manifold, which will adapt perfectly with some custom-made spacers.
     
  22. backyardbeliever
    Joined: Sep 15, 2006
    Posts: 299

    backyardbeliever
    Member

    Thats just like they should fit "perfectly" my WO671 "C" fits perfectly on my #23 heads on my 394. Thanks Dago im glad you had good luck..... as i did. Cheers
     
  23. RocketDaemon
    Joined: Jul 4, 2001
    Posts: 2,082

    RocketDaemon
    Member
    from Sweden

    my biggest problem is to find an intake, and if i had an intake and needed spacerplates i sure could live with that
     
  24. Paul
    Joined: Aug 29, 2002
    Posts: 16,380

    Paul
    Editor

    great old thread
     
  25. Large_911
    Joined: May 30, 2008
    Posts: 219

    Large_911
    Member

    Great thread! Blownolds -- this a really interesting peice of info here. I am thinking of eventually running a supercharger on my 371. Thanks
     
  26. MilesM
    Joined: May 28, 2002
    Posts: 1,219

    MilesM
    Member

  27. blacktopbutcher
    Joined: Nov 22, 2003
    Posts: 298

    blacktopbutcher
    Member
    from Rindge, NH

    Stumbled upon this thread and really would like to find or adapt a blower manifold for my 394 Olds

    Anybody do a tech on this adaption on the mopar manifold.
    I did see that Hampton blowers offers Olds blower manifolds but on the pricey side.
     

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