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 Post subject: Offenhauser 2 1bbl setup
PostPosted: Tue May 08, 2012 2:18 pm 
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Turbo EFI
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Joined: Wed Nov 23, 2011 11:07 am
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Location: SF Bay Area
Car Model*: 67 dart 2 door hardtop
I've decided to go with a dual 1BBL offy intake for my 225 (with Dutra Duals).

Does anyone recommend the Holley 1920 or Carter BBS, one over the other?

Does SlantSixDan or anyone, have matched set of either for sale?

Thanks All,

'67 Dart 270


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 Post subject:
PostPosted: Tue May 08, 2012 2:36 pm 
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Joined: Thu Oct 31, 2002 5:39 pm
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There's a case to be made for the 1920, the BBS, the 1945, the WA3, and other carbs on the Offy twin 1bbl setup. The most important thing is that the two carbs be exactly matched. Send me a PM and I'll see what I can dig up. Setup notes for the twin 1bbl are here.

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 Post subject:
PostPosted: Wed May 09, 2012 5:41 pm 
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Joined: Wed Nov 06, 2002 1:57 pm
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Location: Everett, WA
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A pair of these http://stoveboltengineco.com/catalog/st ... ct=1222026 would be interesting.

They sell them for the 235 chevy.


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 Post subject: dual carbs
PostPosted: Wed May 09, 2012 10:20 pm 
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Turbo EFI
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Joined: Wed Nov 23, 2011 11:07 am
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Location: SF Bay Area
Car Model*: 67 dart 2 door hardtop
How did you find these? Is it $180 for the pair?

Are they enough CFM's if they were intended for a 97 cu. in. engine?

I'm intrigued for sure...I suppose they'd fit an offy manifold, even if I needed adapter plates...

brian


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 Post subject: dual carbs
PostPosted: Wed May 09, 2012 10:28 pm 
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Turbo EFI
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Location: SF Bay Area
Car Model*: 67 dart 2 door hardtop
For that price, it's almost a no brainer to try them...

Might even be better than dual 1920's or BBS's....


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 Post subject:
PostPosted: Sat May 12, 2012 10:07 am 
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The carb pads on the Offy are more then big enough to drill for these carbs. No adapter needed.


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 Post subject: carbs
PostPosted: Sat May 12, 2012 12:32 pm 
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Turbo EFI
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Joined: Wed Nov 23, 2011 11:07 am
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Location: SF Bay Area
Car Model*: 67 dart 2 door hardtop
..and these are progressive carbs, designed for a 98cc engine, so two of these would be perfect for a slant six. At low R's no issues with too rich a mixture and at higher R's, likely all one would need. Like a small four barrel but better flow with the dual offy...can't wait to set it up!

BG


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 Post subject: kick down linkage
PostPosted: Sat May 12, 2012 8:21 pm 
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Turbo EFI
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Joined: Wed Nov 23, 2011 11:07 am
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Location: SF Bay Area
Car Model*: 67 dart 2 door hardtop
Anyone know how to hook the kickdown linkage when using the offy manifold with two carbs?

bg


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 Post subject:
PostPosted: Sun May 13, 2012 4:03 am 
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You either rig up a kickdown cable, or run w/o one and lock the KD lever back about 1/2-2/3 of the way.

Lou

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 Post subject:
PostPosted: Sun May 13, 2012 8:27 am 
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Dart270 wrote:
You either rig up a kickdown cable, or run w/o one and lock the KD lever back about 1/2-2/3 of the way.


The latter suggestion is a good recipe for slow-cooked transmission, yum. Do the job completely and correctly. Working throttle pressure ("kickdown") linkage of some kind is necessary, whether it's a stock-like rod setup or a cable setup. See this thread for some aftermarket kickdown options.

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 Post subject:
PostPosted: Sun May 13, 2012 8:29 am 
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Location: Indy
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What is the cfm rating for these carbs (stovebolt webers) ?

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 Post subject: kickdown linkage
PostPosted: Mon May 14, 2012 2:23 pm 
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Turbo EFI
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Joined: Wed Nov 23, 2011 11:07 am
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Location: SF Bay Area
Car Model*: 67 dart 2 door hardtop
Thanks so much, definitely want a complete and well done setup, I was just asking how others might have done the kick down. Thanks for link!

BG


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 Post subject:
PostPosted: Mon May 14, 2012 2:51 pm 
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Location: Working in Silicon Valley, USA
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You run a rod thru the two posts, already casted into that intake, then make some pieces to connnect it to the trans KD lever.
DD
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