Interesting manifold
- Thread starter Dave999
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Dave999
Well-Known Member
I'd never seen one of those. speco were an aussie brand i think, i know them for their side shifted gearbox shifters, that could be used on the Aussie 3 speeds, bit like a hurst but perhaps not as good..
presume that's for 2 carter BBS?? dunno, odd shaped holes... Nifty little hot box set up though...
Dave
presume that's for 2 carter BBS?? dunno, odd shaped holes... Nifty little hot box set up though...
Dave
Yeah it's scary too that for what it is, it's reasonable. Too bad it's in NZ.
Badvert65
Long Time Mopar Nut
If for mounting 2bbl carbs, that linkage would not work.
S'kinda what I thought.
slantsixdan
=..=
Haven't seen this one before, no; I'll file it with these weirdos and this one.
Looks like the Speco item is configured for a pair of progressive 2bbl carbs, like Webers. That would explain the linkage orientation.
To me it looks like that hotbox arrangement…isn't. Unlike the Offy № 5041 twin 1-bbl intake, there doesn't appear to be any actual path for exhaust to circulate under the two plenums. The box itself appears to be closed on all four sides.
Looks like the Speco item is configured for a pair of progressive 2bbl carbs, like Webers. That would explain the linkage orientation.
To me it looks like that hotbox arrangement…isn't. Unlike the Offy № 5041 twin 1-bbl intake, there doesn't appear to be any actual path for exhaust to circulate under the two plenums. The box itself appears to be closed on all four sides.
Looks like a 2×1bbl intake hogged out for a couple of Holley/(Weber) 5220/6520 2bbls., think OMNIRizon, in which case that linkage is oriented properly.
That Al-U-minimum will transfer plenty-O-heat if bolted directly to a factory exh. manny, probably better than the OE iron with the extra transfer pins cast in.
That Al-U-minimum will transfer plenty-O-heat if bolted directly to a factory exh. manny, probably better than the OE iron with the extra transfer pins cast in.
slantsixdan
=..=
Nope. Latent heat of vapourization of gasoline will easily and completely overcome whatever heat manages to conduct its way over from the hotbox. To get the job done, you need exhaust heat under the plenum, not in the middle between the two plenums. Offy did this right; Speco didn't.
You're probably right about this having started out as a twin-1bbl intake, though, now I look again at the carb mount pads.
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Hard to tell from the photos, but maybe the two "wings" extending from the hot box are fairly skinny exhaust passages.
Demonic
Well-Known Member
I'll just leave this here:
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Brand new intake and Distributor
Have Aussi Speed long runner Huricane intake manifold for /6 engine. $650.00 Have /6 Mopar Hi-Po Electronic ignition kit OEM with distributor $185.00 Both of these items are brand new/ never used....
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slantsixdan
=..=
When I look hard at the upper wall of the hotbox, it looks like there's enough camera angle to see that the wall doesn't have holes.
I currently run this cain intake. Ran the off,then the Clifford and ended with this four a single four barrel.
Typo, offy 4bbl. Also have a mays 2 one barrel.
slantsixdan
=..=
Ahhhhh, the Mays (scroll down) manifold. An interesting item which was the subject of at least one published test.
I think Cain was an Australian company; might be wrong about that.
Still waiting for someone to post pics of the exceedingly rare Argentinian Penìn parallel-2bbl intake, which by all they-were-there accounts was very good.
I think Cain was an Australian company; might be wrong about that.
Still waiting for someone to post pics of the exceedingly rare Argentinian Penìn parallel-2bbl intake, which by all they-were-there accounts was very good.
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