[DeTomaso] Speed Demon 750 anyone?

Thu May 4 05:06:07 EDT 2017

Hi all,

Thanks for all feedback, I will do as Mike, dt and Charles say. I will start by asking for a questionnaire and see how much I remember about my engine :)

/Henrik

-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf Of Charles McCall
Sent: den 4 maj 2017 08:57
To: Mike Drew <MikeLDrew at aol.com>
Cc: Detomaso <detomaso at server.detomasolist.com>
Subject: Re: [DeTomaso] Speed Demon 750 anyone?

If you do decide to buy a new carb, I'd second the suggestion to not buy an "off the shelf" carb. I bought a fancy carb from one of the Pantera vendors that was "tuned for a Pantera". But what is a Pantera? A bone-stock, 1974 engine with all the smog gear installed? A 1971 high compression engine? A
393 stroker? None of these engines will have the same needs, and a carb tuned for one will work poorly on another.

The carb I bought worked horribly on my engine, which is far from stock.
After a lot of fiddling, I sent it to Chuck Nuytten, who does the same thing Mike comments. There's a 5 page questionnaire about your motor, and he tunes it and sets it up for your specific use. (It's also who milled the choke off for better flow). I took it out of the box, put it on, and the engine ran fantastic ever since.

Especially if your motor is a little different, I'd look at the option of a carb configured for your specific engine instead of "one-size-fits-all"

On Wed, May 3, 2017 at 11:36 PM, Mike Drew via DeTomaso < detomaso at server.detomasolist.com> wrote:

> Dan Jones recommends Competition Carbs out of Nevada. That's what I 
> have on my motor and its been great. No 'off the shelf' buying--you 
> send him a full spec sheet on your engine and exhaust and be builds a carb to suit it.
>
> Not overly expensive either.
>
> Mike
>
> Sent from my iPhone
>
> On May 3, 2017, at 14:34, Corey Price <coreyjprice at gmail.com> wrote:
>
> >   Henrik,
> >   The Demon carbs aren't known for their reliability.A  I would recommend
> >   an Holley Street Demon 625 or 750 or a Holley-type carburetor that a
> >   tuner has worked on (such as a Quickfuel); many of the Pantera vendors
> >   can help with a "tuner" carburetor.
> >   Corey
> >
> >   On Wed, May 3, 2017 at 3:10 PM, Henrik Svensson
> >   <[1]henrik.svensson at intelligo.se> wrote:
> >
> >     Hi Charles,
> >     No, I guess that is more of an excuse to by something new to the
> >     car. I'm a bit curious of what a new carb can do to my engine. But
> >     if someone tells me an Edelbrock 1411 is a good carb for my engine
> >     spec I guess I can live without the choke even if it makes life in
> >     Sweden a bit easier :)
> >     /Henrik
> >     Sent from my iPhone
> >
> >   3 maj 2017 kl. 20:51 skrev Charles McCall 
> ><[2]charlesmccall at gmail.com
> >:
> >   The only reason you want to buy a new carb is because the choke stopped
> >   working?
> >   I had mine milled off 15 years ago and haven't missed it since. I don't
> >   have
> >   any cold starting problems, and the engine warms up pretty quickly.
> >   Granted,
> >   you live in Sweden and I live in Spain, where the temperature is a
> >   little
> >   different, but even in cool weather I don't really miss a choke. Are
> >   you
> >   sure it is necessary?
> >   -----Original Message-----
> >   From: DeTomaso [mailto:[3]detomaso-bounces at server.detomasolist.com] On
> >   Behalf
> >   Of Henrik Svensson
> >   Sent: miA(c)rcoles, 3 de mayo de 2017 16:49
> >   To: [4]detomaso at server.detomasolist.com
> >   Subject: [DeTomaso] Speed Demon 750 anyone?
> >   Hi all,
> >   I have a Edelbrock 750 (1411) on my car. It was placed there 2005 by
> >   the
> >   previous owner. Since then I have done a rebuild and it's now a 393
> >   with AFD
> >   4v 64cc heads and a cam with intake duration of 239 and exhaust of 248
> >   (0.050).
> >   The Edelbrock have been working fine, not that I have much to compare
> >   with,
> >   but now the choke stopped working and I think I'll buy a new one
> >   instead of
> >   fixing the old one. I have been looking at the
> >   SPEED DEMON 1402020VE 750 CFM, anyone with experience of that carb?
> >   Or any other opinions about what carb to put on an engine with these
> >   specs?
> >   Thanks!
> >   Henrik
> >   #1477
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> > References
> >
> >   1. mailto:henrik.svensson at intelligo.se
> >   2. mailto:charlesmccall at gmail.com
> >   3. mailto:detomaso-bounces at server.detomasolist.com
> >   4. mailto:detomaso at server.detomasolist.com
> >   5. mailto:DeTomaso at server.detomasolist.com
> >   6. http://server.detomasolist.com/mailman/listinfo/detomaso
> >   7. mailto:DeTomaso at server.detomasolist.com
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