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Author
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Topic: Weber fed 289?
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32valveGT350
Gearhead Posts: 124
From: Briz Vegas, QLD, Australia
Registered: May 2003
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posted 06-10-2003 02:19 AM
  
okay, having given up my plan for world domina... i mean slotting a 32valver (too hard down here in Aus) into a '65 Fastback, what sort of hardships can I expect from fitting a Quad downdraft weber setup onto a 289?Thanks,
Ben
(is it possible to change your username??)
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KULTULZ
Gearhead Posts: 783
From: Rockville, MD
Registered: Oct 2002
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posted 06-10-2003 04:14 AM
You mean like this?  
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two89w
Gearhead Posts: 299
From: sydney australia
Registered: Sep 2002
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posted 06-10-2003 07:18 AM
no hardships at all..just lots of money and time to get it right.....after that awsome 
i have webers on my 347
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Buster
Gearhead Posts: 1437
From: Hurricane alley
Registered: May 2002
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posted 06-10-2003 01:03 PM
That setup looks SO COOL!
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32valveGT350
Gearhead Posts: 124
From: Briz Vegas, QLD, Australia
Registered: May 2003
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posted 06-10-2003 08:31 PM
Any hints on where to start with the choke sizes and jetting?? Having come from Alfa Romeos which came with Weber or Dellorto side-drafts, I'm kinda familiar with the carbs, but do know getting the jetting right will cost $$
Of course the other option is to go to a set of weber style throttle bodies and inject it... but I may be able to lay my hands on the downdraft webers off of a 308 Ferrari for reasonable money....Ben
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Mpcoluv
Gearhead Posts: 1278
From: Charlotte NC usa
Registered: Apr 2001
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posted 06-11-2003 06:25 PM
quote:
Originally posted by 32valveGT350:
Any hints on where to start with the choke sizes and jetting?? Having come from Alfa Romeos which came with Weber or Dellorto side-drafts, I'm kinda familiar with the carbs, but do know getting the jetting right will cost $$
Of course the other option is to go to a set of weber style throttle bodies and inject it... but I may be able to lay my hands on the downdraft webers off of a 308 Ferrari for reasonable money....Ben
One of The Weber books has formulae to get you in a rough "Ballpark" starting point for chokes and jets.
You really need a wide band O2 sensor in one of the primary tubes to easily tune them.
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32valveGT350
Gearhead Posts: 124
From: Briz Vegas, QLD, Australia
Registered: May 2003
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posted 06-12-2003 01:47 AM
Just looked at that photo a bit closer... is that a NOS line I can see on the runner for the front right cyl?
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two89w
Gearhead Posts: 299
From: sydney australia
Registered: Sep 2002
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posted 06-12-2003 06:04 AM
are you going to run 44's 48's idf's or ida's?
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MidLifCrisis
Gearhead Posts: 466
From: Frederick County, MD
Registered: Oct 2001
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posted 06-12-2003 08:16 PM
Have you heard of Inglese? He is a Weber guru that specializes in Cobras and Shelbys. If you let him know your specifics, he can probably set you up with the proper jets and stuff to get you where you need to be.
Charlie
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32valveGT350
Gearhead Posts: 124
From: Briz Vegas, QLD, Australia
Registered: May 2003
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posted 06-12-2003 11:14 PM
I spose a Question I should have asked is What intake manifolds are out there? I know theres a Holman Moody manifold, and Redline do one down here, are there any others?
What is the difference running wise between IDAs and IDFs? Coming from Side-drafts (DCOE webers and Dellortos) the downdrafts give a few more options which I'm not quite completely sure on...Thanks Guys
Ben
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two89w
Gearhead Posts: 299
From: sydney australia
Registered: Sep 2002
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posted 06-13-2003 06:39 AM
idf's are for more street type engines ida's more race type engines
either will work perfect
a yankie manifold will cost you **** loads
just get a redline manifold have the ports cleaned up and matched to your heads
a redline manifold will cost you about $900
new carbs about $700 to $750 each plus linkages etc.....its still cheaper than injection
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32valveGT350
Gearhead Posts: 124
From: Briz Vegas, QLD, Australia
Registered: May 2003
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posted 06-15-2003 08:52 PM
Yeah, definitly cheaper than injection... Given that the manifolds and linkages are the same between injection and webers, I did a cost breakdown
4xThrottle bodies @ $560 each
1xInjection Conmputer @ $900+
1xFuel Pump @ $600
8xInjectors @ $? each (I'd stopped pricing by this time...lol)
Surge tank
LoomDyno tuning time would be about equal...(I have a friend who has been through the process with a *very* well known car, Street Machine of the year in about '95? Colin Townsends Fat FJ)
When compared to the cost of Webers, injection just doesn't make sense... The redline manifold takes IDFs?
Does Redline do a linkage kit? Thanks Guys
Ben
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