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HI iv just finally put in my newly recoed 253
and i took my old 2 bbl manifold from me red 253
and bolted it on thinking there all same as the
old manifold was in better condition.
now i got water leaking out from the seccond bolt in from
the rear water jackets. ???????
anyway im putting a Kc 4bb manifold and a rebuilt
quddy on
just woundering what power gain will i get
from the old holly 2bbl 350cfm going to the 600cfm 4bb quddy??
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1/2 a chance you lost power, torque and economy...3 out of 3 ain't bad.
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You should get good rive ability and if the Quaddy is set up well pretty good economy when running on front barrels. I beleive the KC manifold is fashioned on the HDT Blue motor manifolds and in a high performance situation flows a lot better. It would be
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The KC253308 manifold is a copy of the HDT manifolds but it has ruffles in the plenum where the HDT one is smooth. Supposedly this is to create turbulence. Make sure you get 253 needles in the quadrajet though. |
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thanks for ur info..
yeah the quddy is all set up for the 253 even
up sized the jet a touch because me extractors give it more
breathing.
now i got a bigger delema.
i just figered out i have red hq heads on me blue block
the thing is cause its a
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Hi there GTS_Ton,
I think u will find that a red manifold and blue ones are different. The blue should be an ADR manifold and will have lovely holes for an EGR valve. Hence you leaks.
Cheers John
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thanks mate
now i just have to find the matching manifold for me heads
i shold of checked the serial numbers
before i started to know for sure wat i had.
u can tell these dayz buy the color (blue,red,black)
most are re painted and u wouldnt know un
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The KC253308 suits both red and blue heads. It has all three bolt holes in the centre. Simply stick welsh plugs (supplied) in the non used holes. |
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thanks Byron
that now saves me alot off messing around
and if all goes well me car be back on de road
tomorrow.
thanks mate
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GTS TON, what part of melb do you live in? i'm from the western suburbs.
Live Fast,
Die Sideways
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hi.
Im from the nothern subs
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im having trobble with the sump on my red block ive takeing a blue 253 out of me commadore as its stuffed and im swapin it for a red one now the sumps are diffrent and the thing that sucks the oil up is to can u fit the oil sucker thing off the blue and f
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Yes. Obviously the red 253 that you have isn't from a Commodore. Just use the sump and pickup off the Commodore blue motor on the red motor. Just give it a good clean first. Best bet is to use new high tensile bolts on the pickup as factory ones are not h |
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