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Technical Best/Worst 4 barrel manifold to adapt a small blower SBC

Discussion in 'The Hokey Ass Message Board' started by bfalfa55, Feb 25, 2015.

  1. bfalfa55
    Joined: Jul 23, 2013
    Posts: 223

    bfalfa55
    Member

    What manifolds are good, bad or the best choice for adapting a smaller blower like a 4-71 to a SBC ? I have the access to machining and fabricating anything I want to make, so I thought I would ask.
     
  2. brigrat
    Joined: Nov 9, 2007
    Posts: 5,380

    brigrat
    Member
    from Wa.St.

    Try an old Creitz 4X2, single 4 or Tripower unit, mill the top off, etc. etc.
    Usually run around, between, $200-$300
    There's one on the HAMB classifieds rite now for 3 bills or trade, same guy, same manifold on E-Bay for $125, no reserve.......................

    untitled (3).png untitled (2).png
     
    Last edited: Mar 2, 2015
    Peanut 1959 likes this.
  3. Go for a 2x4 and make a plate......Easy breezy!
     
  4. There's one on the HAMB classifieds rite now for 3 bills or trade, same guy, same manifold on E-Bay for $125, no reserve.......................

    Damn, I try and give the HAMB guys the better deal. No body has bought anything from me yet so maybe he's on to something.;) Nah, I usually pay too much for something I thought I needed and then never find anyone else that wants it.

    The 2x4 idea is a good one.
     
    bfalfa55 likes this.

  5. brigrat
    Joined: Nov 9, 2007
    Posts: 5,380

    brigrat
    Member
    from Wa.St.

    I like the Creitz over the Weiand because you can fine tune the 471 for & aft on the manifold. Not so limited on blower snout length, pulley/waterpump alignments, etc.. With the Weiand you are stuck with where they want the blower to go and you will have to buy accessory's to match.
    Watch your blower centerline to crank centerline when fabricating............................
     
    afaulk likes this.
  6. agree with Rat!
     
  7. 32fenderless
    Joined: Jun 7, 2007
    Posts: 273

    32fenderless
    Member

    I've got a 2 x 4 Creitz that I picked up to adapt a 471 to. I ended up locating a Weiend 471 manifold so I no longer need the Creitz. I'll let it go for $225 plus the ride. No stripped threads no cracks or broken tabs.
    Thanks
    Jason


    Posted using the Full Custom H.A.M.B. App!
     
  8. bfalfa55
    Joined: Jul 23, 2013
    Posts: 223

    bfalfa55
    Member

    I see why you suggested the Creitz, perfect ! The reason I asked about a single four barrel is I have seen a few examples where the adapter was made for 4-71. Does it really matter whether it is a single plane, dual plane or what runner configuration is !

    I try to give the better deal, rather see somebody get their ride going than make a ton of money. I'm a cheap b@@tard, I always try to find it for a deal so if I have to sell it later I at least break even. It has worked most of the time !
     
  9. brigrat
    Joined: Nov 9, 2007
    Posts: 5,380

    brigrat
    Member
    from Wa.St.

    The Creitz is open plenum, any other makes with divided, single/dual plane may help low and mid range power band, something to consider for sure. For street use you probably won't notice a difference. The dual/single planes may be easier to tune if running multy carbs atop the 471. JMO......................................
     
  10. olskoolspeed
    Joined: Mar 2, 2009
    Posts: 476

    olskoolspeed
    Member
    from Ohio

    I would go a different route. Every now and then, you can find a really good deal on used 6-71 intakes - especially ones that were repaired or modified. You could "plate it down" to a 4-71 and it already has a pop-off valve.
     
    afaulk likes this.
  11. Gene Boul
    Joined: Feb 9, 2006
    Posts: 805

    Gene Boul

    I built mine from a old Eldebrock shoebox. I like the tunnel ram look. Course this was a long time ago. Regardless I welded on a 1" plate cut the openings and milled it flat. Sat a 6-71 on top with the blower drive and lined it up with the bottom pulley. Punched the holes for the aluminum studs...went really fast for the era. g
     
  12. joel
    Joined: Oct 10, 2009
    Posts: 1,924

    joel
    ALLIANCE MEMBER

    I had a friend that used the Creitz manifold for exactly your app. in the late 70's and it worked great. I think he machined off the top just enough to make a completely open plenum and welded a flat plate of aluminum back on. he made a blowoff plate on the pass. side in that area between the runners.
     
  13. You want an open plenum not a dual plane. The reason that everyone is suggesting the crietz is that the plenum runs the full length of the intake instead of just being a box in the middle of the intake. You mill the top off creat a new top plate and weld it on. easy peazy.

    Might I suggest an intake that you could use that you will not be destroying something of historic value?

    Find a Chevy cross fire ( it was a GM intake with 2 throttle body injectors) they are normally pretty cheap and they have a removable top. Make a new top that will situate your blower and bolt it in place of the old top.
     
  14. bfalfa55
    Joined: Jul 23, 2013
    Posts: 223

    bfalfa55
    Member

    I actually considered that but was unsure how it would react to the blower with the cross flowing ports.
    After seeing the Creitz idea, I thought I would make an adapter that bolted to it without carving up.
     
  15. cb1
    Joined: May 31, 2007
    Posts: 405

    cb1
    Member
    from Wisconsin

    I just picked up a Creitz and will be adapting it my 4/71. I have the manifold sitting on the block with the blower on top. Adapter will be a breeze once I get a height measurement. Mine will be bolt on. Most will be hidden and you wont see them anyway.

    That's what I am doing, pictures when I get to making the adapter???

    cb1
     
  16. DDDenny
    Joined: Feb 6, 2015
    Posts: 15,076

    DDDenny
    Member
    from oregon

    Did this one about 75-76
    Edelbrock Smokey Ram
    Maverick 014.jpg

    Enderle hat, not Mr. GASKET
     
    Last edited: Oct 4, 2017
    flux capacitor likes this.
  17. bfalfa55
    Joined: Jul 23, 2013
    Posts: 223

    bfalfa55
    Member

    Did you get a single or dual four barrel one ?
     
  18. bfalfa55
    Joined: Jul 23, 2013
    Posts: 223

    bfalfa55
    Member

    That looks like a nice, clean job !
     
  19. sunbeam
    Joined: Oct 22, 2010
    Posts: 5,275

    sunbeam
    Member

    There is a Creitz manifold on Ebay.
     
  20. The blower or the motor won't care at all, it is shoving your mix into the cylinders and that does away with any type of runner length tuning. You could even open it up and carve everything out of the inside of it to make it one big open box.

    The only thing I see wrong, for lack of a better term, with making an adapter to go on top of a 4 bbl intake is that it pushes your blower up higher then it needs to be. if you are good with it then it is not wrong at all, if you catch my drift.
     
  21. ididntdoit1960
    Joined: Dec 13, 2011
    Posts: 1,013

    ididntdoit1960
    Member
    from Western MA

    Yes - Id like to get 300 for my creitz and we all know its a Deal at $125....am I taking a risk listing it at that on ebay? sure. If a Hamber wants it and makes a reasonable offer its theirs. Had to list a price on here so I put what id "like" to get.....we all know how that goes
     
  22. Tony
    Joined: Dec 3, 2002
    Posts: 7,350

    Tony
    Member

    Another option is a weiand low dual quad intake. Pretty much the same open design as the creitz, but is not flat from carb base to carb base.
    Dyers used them when making the V6-71 intakes years ago.
    The'd machine out the carb area and weld on thier flange.
    I had one of thier V6-71 set ups years ago with that intake set up.
    More work than a creitz, but can still be bought new fairly affordable.

    Tony
     
  23. cb1
    Joined: May 31, 2007
    Posts: 405

    cb1
    Member
    from Wisconsin

    dual four barrel
     
  24. cb1
    Joined: May 31, 2007
    Posts: 405

    cb1
    Member
    from Wisconsin

    picture
     

    Attached Files:

  25. bfalfa55
    Joined: Jul 23, 2013
    Posts: 223

    bfalfa55
    Member

    Well, I ended up getting an old Edlebrock C26 with an oil fill tube and breather cap for $135. It needs some threads repaired and a huge clean job but I think it will work just fine. Pics to follow.
     
  26. 56sedandelivery
    Joined: Nov 21, 2006
    Posts: 6,695

    56sedandelivery
    Member Emeritus

    FYI, there was just a single 4 barrel Creitz on that auction site we all know and love; it may still be on there. Being they are so flat on top, I'd think they would lend themselves well to adapting a blower to. I am Butch/56sedandelivery.
     
  27. bfalfa55
    Joined: Jul 23, 2013
    Posts: 223

    bfalfa55
    Member

    Yeah Butch it was ididntdoit1960's, a member here on the HAMB. Pretty sure it sold for about double what I paid for mine. I also believe that it would be a great choice for a blower but I couldn't see myself cutting open the top of it like was mentioned earlier in this thread to adapt the blower.
     
  28. joel
    Joined: Oct 10, 2009
    Posts: 1,924

    joel
    ALLIANCE MEMBER

    I wouldn't mourn the loss of a Creitz manifold and I also wouldn't pay much. If your not going to use it for a blower manifold, it would be wall art or completely useless.
     
  29. moparmuscle1
    Joined: Nov 15, 2012
    Posts: 85

    moparmuscle1
    Member

    I'll just throw this out there to , I have a NOS 471 blower that I dont need . I want to go with a 671 , if your interested $500. I'll trade it for Mopar parts , try me . This has never been installed on anything . I'm in Canada , but shipping shouldnt be to bad . Our dollar is shot
     
  30. gimpyshotrods
    Joined: May 20, 2009
    Posts: 18,359

    gimpyshotrods
    ALLIANCE MEMBER

    The blower is easy. Do you have a SBC manifold to go underneath it?
     

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