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What makes a Stromberg 81 carb such a hot item?

Discussion in 'The Hokey Ass Message Board' started by Harrison, Nov 13, 2006.

  1. Just curious...

    I was re-reading the Stromberg 97 article in TRJ #32 last night. They briefly mention the "more exotic" 81's and 48's.

    What makes them "more exotic"? I always thought the 97 was about as good as it got. Maybe the smaller cfm rating makes them a better candidate for a multi-carb set-up?

  2. Dakota
    Joined: Jan 21, 2004
    Posts: 1,535

    from Beulah, ND

    Well the 81 was only available on the v8-60.. SO its pretty scarce. its a good banger carb.

    just Rarity, and stuff mostly i believe.
  3. Artiki
    Joined: Feb 17, 2004
    Posts: 2,002

    from Brum...

    The cfm plays a part but I think the others are quite rare in comparison to the 97 as well. I can't remember exactly but I think they were only produced for one year each, the 81 only featuring on the V8-60, whereas the 97 was around for 3(?) years or so.
    Joined: Nov 22, 2005
    Posts: 7,591

    from SIDNEY, NY

    They're more exotic because they're harder to find. 81s only came on V8-60s from '37-'39; I think that '40 V8-60s used a Holley 94 style carb with a "92" on the side of it. 81s come in handy for those that insist on six carbs for the street on a mild engine, since the venturis are smaller than the 97s and 48s. 48s were the first two barrel that flatheads used in '34-'35.

  5. Sixcarb
    Joined: Mar 5, 2004
    Posts: 1,503

    from North NJ

    81 125 Cfm

    97 155 Cfm

    48 170 Cfm
  6. BRENT in 10-uh-C
    Joined: Apr 14, 2004
    Posts: 502

    BRENT in 10-uh-C

    One other thing too

    For some reason the 81 lends itself well to be able to convert it over to alcohol whereas the 94 or the Chandler-Groves cannot be done. I think the 97 can be done ...but with difficulty. Now back to the 81. The stock-block Midget guys all used 81s on alcohol and many of them were ruined by the alcohol left in over the off-season. Also, many were just plain used up by racers over the years.

    In my opinion, a correctly rebuilt 94 makes a better banger set-up than an 81 --or a 97. Look at the cubic inch sizes the 81 and 97's were originally bolted on to vs. the size of a banger.

    Pinstriper40 likes this.
  7. manicmechanic
    Joined: Sep 27, 2006
    Posts: 210


    What about LZ on the carb? I've got two with that logo. look just like a 97 carb.
  8. LZ was a Lincoln carb.

    1" venturi & 160 cfm.

    I'd be interested if they are for sale.

  9. blowby
    Joined: Dec 27, 2012
    Posts: 7,751

    from Nicasio Ca

    I want to try this manifold on my 60hp (after milling the bases flat) which has one 97 now. What should I expect to pay and where for a couple of 81s? Are there alternatives, Holley?

  10. 36tbird
    Joined: Feb 1, 2005
    Posts: 1,083


    Just curious, when you mill the bases flat, what do you do about the stud angle? Can you re-tap the holes perpendicular? I ask because I have a 3X2 SBC manifold that must have been for a boat or something as it has the angle.
  11. blowby
    Joined: Dec 27, 2012
    Posts: 7,751

    from Nicasio Ca

    Bend 'em! :)

    Funny thing about this manifold, the studs are perpendicular to the base already, not the carb flanges. I know it looks funny in the photo, because I used the close up lens. So they must have just run it with the studs angled.

    If this were not the case, I would suggest drilling out stud holes while it was on the mill for helicoils at the proper angle.
  12. 296 V8
    Joined: Sep 17, 2003
    Posts: 4,666

    296 V8
    from Nor~Cal

    Im doing that right now on a 4 x 2 boat intake
    I think im going to get some quality thread inserts - make a drill guide plate once I know the drill size for the inserts.

    Iv alreaddy cut the intake

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