Hi,
I am in the midst of planning an engine for my SS Hatch,
It will have a 308, standard stroke, forged pistons, st 3. yella terra heads, 286 crane cam, roller rockers, pacemakers, harrop single plain manifold, electronic dizzy, running on PULP. 4 speed manual (of some description) and a 3.55 LSD nine inch diff.
I have a pair of 45mm DCOE Webers with manifold to suit the 308, but have been offered an 850 Demon Carby from a mate. does anyone have experience with either? which is better and will offer better power and/or economy??
any opinions appreciated, Cheers
850 Demon or Twin 45mm Webers??
Started by
_heppy_ss_76_
, Jun 05 2006 05:58 PM
11 replies to this topic
#2
makka
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Posted 05 June 2006 - 06:36 PM
go the webbers, a 850 is waaaaay too big for a 308, unless you can turn it to 10000rpm
#3
_runna_202_
_runna_202_
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Posted 05 June 2006 - 07:00 PM
G'day,
i've got a mildish 308 with vn heads dual plane torque power manifold
and a small solid cam, and it runs flat 12s in a vh commodore...and has a 750 speed demon, the bloke who built it recons its still a tad big....if thats any help.
i've got a mildish 308 with vn heads dual plane torque power manifold
and a small solid cam, and it runs flat 12s in a vh commodore...and has a 750 speed demon, the bloke who built it recons its still a tad big....if thats any help.
#4
_MAWLER_
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Posted 05 June 2006 - 09:33 PM
Demon way too big, don't know anything about webers.
#5
makka
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Posted 05 June 2006 - 09:35 PM
they got brocky first at bathurst, I think he ran 48's though, not 100% tho
#6
_[BOTTLEDUP]_
_[BOTTLEDUP]_
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Posted 06 June 2006 - 12:14 AM
I was under the impression the race A9X's used IDF webers NOT DCOE's... They're downdrafts not sidedrafts.
#7
Peter UC
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Posted 06 June 2006 - 10:03 AM
L34s ran DCOEs they didn't have the clearance to run the downdraughts, they seemed to perform alright.
#8
makka
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Posted 06 June 2006 - 11:28 AM
I missed the DCOE bit, but they did run them on the L34's
#9
_JBM_
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Posted 07 June 2006 - 12:32 AM
This is an adoptor to fit 2 DCOEs in place of a 4BBL Holley and is similar to what HDT ran at Bathurst in 74.
James
James
#10
_Liam_
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Posted 09 June 2006 - 08:48 PM
I also believe that is way too big, some fella i know has a 600 Holley... I think its way too big, how bout yourselves?? They used 48 mm IDF's i thought, well the A9X's did anyway. Looked beautiful, went even better...
#11
_Oldn64_
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Posted 10 June 2006 - 03:04 AM
If you can get your hands on delretos then I would have these over teh webers anyday. Personally there is nothing wrong with teh quaddy. tuned and fixed right they are great. Teh factory did a brillant job with them!!!!
Cheers
Cheers
#12
_A9_X_
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Posted 12 June 2006 - 07:21 PM
you can always choke webers down. Hope you have a good carby bloke in mind to tune them as my experiences with webers ,they are very finicky ,but once set up properly are fantastic
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