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Aussiespeed Supercharger Manifold being cast
https://slantsix.org/forum/viewtopic.php?t=56967		 Page 1 of 1
Author:  John1972 [ Thu Jan 22, 2015 12:24 am ]
Post subject:  Aussiespeed Supercharger Manifold being cast
Just read the update on the Aussiespeed website, slant supercharger manifold now being cast. Is to suit 142/144 Weiand using small block chevy length drive, and will have adopters for other such as 3/71, 4/71 & Eatons etc. Good to see Aussie company supporting the slant guys. I've been patiently waiting a long time for this :D Cant wait to get my hands on a 4/71 version!

https://www.facebook.com/superchargerki ... 79/?type=1

Image
Author:  Dart270 [ Thu Jan 22, 2015 5:03 am ]
Post subject: 
Looks nice. If you have an "in" with them, I would highly suggest increasing the runner cross-sectional area. Many of us have tried these intakes on naturally aspirated motors and they run out of breath around 5000-5500. A quick swap to a Clifford 4bbl gets you a bunch of top end power. The main difference I can see that might produce this is the small runner area... I have tried the long and the short runner and they both run out of breath up high.

Thanks,

Lou
Author:  John1972 [ Thu Jan 22, 2015 9:47 am ]
Post subject: 
Hi Lou. Would the forced induction negate the smaller runner issue of make it worse in your opinion?
Author:  Dart270 [ Thu Jan 22, 2015 10:00 am ]
Post subject: 
I have less experience/knowledge about that, but the turbo folks I know have wanted large runner areas and large-ish plenums. Looks like that intake has the large plenum part...

Lou
Author:  Slanteast [ Thu Jan 22, 2015 10:53 am ]
Post subject: 
Good day, Lou how does the Offy intake compare with the Clifford? any difference above 5000?
Those engines on the Aussie website look awesome!!!

Thanks Derek
Author:  Dart270 [ Thu Jan 22, 2015 11:25 am ]
Post subject: 
Offy is better below 4500 or so. Clifford is definitely better above that, assuming you have a motor that can make power up there (good flowing head, higher comp, med/large cam, looser rotating/recip assembly, etc). All things being equal, headwork w/bigger valves will get you the biggest gains out of anything.

Lou
Author:  John1972 [ Thu Jan 22, 2015 1:21 pm ]
Post subject: 
If this manifold does have a larger plenum for the blower, is there enough material in the runners for someone to work their magic?
Author:  kesteb [ Thu Jan 22, 2015 9:39 pm ]
Post subject: 
I have tried both, with the same engine setup, and the Clifford was the better manifold. In my opion, the Offy is no better then a supersix manifold, with the exception that you can run 4v carb.
Author:  Dart270 [ Fri Jan 23, 2015 6:57 am ]
Post subject: 
Yes, there is material in the runners, but why not cast it bigger to begin with?

Lou
Author:  Slanteast [ Fri Jan 23, 2015 8:03 am ]
Post subject: 
Hey, when you say tried them both on the same engine. Did the engine have a lot of mods? Headwork, big cam etc? hp?
Has anyone else had similar results with the Clifford vrs Offy?
I also was wondering if the triple Webbers would be a gain from either a Clifford or Offy 4brl? Has anyone made that upgrade on a built engine without other major changes and got good results? I ve been wondering that ever since I got the Slant bug.
Appreciate any and all comments.
Thanks Derek
Author:  kesteb [ Fri Jan 23, 2015 11:30 pm ]
Post subject: 
Yes, home ported head, OS valves, 8.75 compresion, erson 270 cam, dutra manifolds, 500 avs, yada, yada...

The only change was the manifold swap. The Clifford was better.
Author:  se7enine [ Wed Feb 11, 2015 12:30 pm ]
Post subject: 
The manifold is now on Aussiespeed's website. $795
http://www.aussiespeedshop.com/product/ ... ld-as0042/
Author:  1974duster kev [ Wed Feb 11, 2015 8:23 pm ]
Post subject: 
Pretty sweettttttt

Kev
Author:  Dart270 [ Thu Feb 12, 2015 10:03 pm ]
Post subject: 
Yes, tried on heavily modified engine.

Lou
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