[DeTomaso] Hp difference between efi and webers

[wkooiman at earthlink.net]

I agree.

There will be little difference between a properly tuned/sized

a.  Holley
b.  Throttle Body Injection
c.  Webers
d.  Weber-syle EFI

The key word is "properly tuned/sized".

Holleys work so well because they get pretty close with a minimum amount of fiddling.  Webers get closer, but there's more fiddling.  EFI and especially EFI with integrated spark control is the best, but most likely the Holley got at least 90% of the way there and maybe 95%.  You're paying an extra $10K or so for a 5-10% improvement in power.

Dollar for dollar, you'll get a lot more performance out of a good traditional build - say a stroker, CHI heads, CHI single plane intake, Holley, and a decent sized cam.

I like my Webers, but I doubt that they're making more than 10% more than J.T.'s Holley.  ;-)

Of course, those are just power per dollar comments.  There are other reasons to choose an induction system, including wow-factor, driveability, being able to keep your engine cover, and so on.

-----Original Message-----
>From: Ken Green <kenn_green at yahoo.com>
>Sent: Oct 28, 2008 10:47 PM
>To: detomaso at realbig.com, boyd casey <boyd411 at gmail.com>
>Subject: Re: [DeTomaso] Hp difference between efi and webers
>
>I think the big difference is that you can have high HP, decent mileage, and a smooth running engine with EFI.  I assume that you can make as much HP with a carb, but your mileage will suck and the engine will load up at every other stop light.
> 
>Ken
>
>
>--- On Tue, 10/28/08, boyd casey <boyd411 at gmail.com> wrote:
>
>From: boyd casey <boyd411 at gmail.com>
>Subject: [DeTomaso] Hp difference between efi and webers
>To: detomaso at realbig.com
>Date: Tuesday, October 28, 2008, 8:08 PM
>
>I know the efi setups are supposed to increase drivability , improve mileage
>and startability but based on just horse power difference What can someone
>expect if all othet things remain unchanged and I were to convert from a
>Holley 650 with an Edebrock  type aluminum intake manifold and  a. switch to
>4 weber IDF's  (with the appropriate venturis or a weber style( throttle
>body)  efi ( Redline, TWM, Dynatek, Imagination injection )  is there a
>substantial HP difference?
>
>Boyd 1973L # 5783
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