Holley Projection 2D [long]

[Bruce Plecan]

To make a long story short, unless you have a Holley TB in your hands for
free, just go to a recycling center, and get a TB of a BBC.  It will have
80, or 90 lb/hr injectors already.  If too big find a late GM Cab and look
for the Brn/Yel injectors.
More color ID's in archives.
BTW, the BBC TB has 2" buttterflies like the Holley, and the IAC is already
there.
I'm glad to hear Howell, figured out what they were doing was at least dumb,
or wrong.  That was a long thread.......
Grumpy



----- Original Message -----
From: Rich Schimmelbusch <rschimmelbusch at worldnet.att.net>
To: <diy_efi at diy-efi.org>
Sent: Wednesday, January 26, 2000 1:34 PM
Subject: Re: Holley Projection 2D [long]


| "Bruce Plecan" <nacelp at bright.net> wrote:
| > .......why not wire it to a 1227747 (gm ecm), get
| > a copy of the demoware from Tunercat, a chip burner, an eraser, and some
| > spare proms, and custonize a good computer to your needs.
| >    I don't know if any of the holleys use an IAC, might need to get
Howell
| > to modify it, or get one from a junkyard, the BBC have a 2" butterfly
| > Grumpy
|
| This thread is timely for me as I want to start this project on my SBC.  I
sent
| Howell an e-mail asking about their 4bbl kit, along with a fairly detailed
| description of my application, and all I got back was "the 4 bbl kit has
been
| discontinued.  What year car is this going into."!!  So now I have a
re-worded
| query pending with them regarding the 2 bbl kit.  Maybe they'd like to
sell one
| of those...
|
| It sounds like IAC is the mod required on the Holley TB to make it work?
Does
| anyone know which Holley TB is a candidate for the modification, analog,
D, or
| Di, or is there a difference?  Nothing a competent machinist couldn't
handle,
| right?  Can everything else remain stock?  Harness?  (Howell sells a
modified
| harness one...)  I would prefer a 4 bbl TB; are there any stock solutions
that
| would bolt to a square or spread-bore flange?   As far as 2 to 4 bbl
adapters
| go, hood clearance is tight already.
|
| Here is what I wrote them:
| > ....355 c.i. Chev small block with forged flat-top pistons built around
an
| > Edelbrock Performer cam (204/214 deg. @ 0.050 in., 0.420/0.442 in.) and
manifold
| > (idle-5500 rpm) package.  The engine uses iron L31 Vortec heads,
exhausting through
| > 1 5/8 x 36 in. headers.  The headers will be replaced and I will
probably use a
| > "shorty" style.  This is installed in a 1979 z/28 (3700 lbs.) currently
in front
| > of a THM 350 automatic (2.52/1.52/1:1), but probably to be replaced by a
THM
| > 200-4R (2.54/1.57/1:1/0.67).  The rear gears are 3.42.
|
| Hmmm, it does say what year the vehicle is... so their tech weenies can't
read
| either.
|
| > .... The idea of using production chevrolet parts with their attendant
ease of
| > replacement also appeals to me.  I would like use the 1227747 computer,
components
| > (distributor, etc.), and sensors from the '87-'90 GM TBI system.  Since
I am using
| > the Vortec heads and Edelbrock manifold, I obviously need to use a
throttle body
| > assembly that will bolt on a square or spread-bore flange.  I am able to
change
| > camshafts if recommended, but I don't think I am able to go to the
Performer
| > RPM manifold due to hood clearance considerations.
|
| Thanks in advance to anyone who can enlighten me in these matters!
| --
| Rich
| mailto:rschimmelbusch at .att.net
| coming soon http://www.RainierAviation.com
|
|
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