DIY_EFI Digest V1 #248 -Reply

[George M. Dailey]

At 01:34 PM 8/27/96 -0500, you wrote:
>I would like the list members' opinions.  I want
>to build a fuel injected Chevy 350.  It should have about
>10.5:1 compression. Ported out AFR aluminum heads.  TPI
>specialties mini-ram manifold (looks like current LT1 but
>made for forward cool engines)  Cam with about 222deg dur
>at .050" and .480" lift intake and 232 deg dur at .050" and
>.510" lift exhaust.  1 3/4 " headers, low restriction exhaust
>etc.... 6" connecting rods.  I'm considering buying and EFI
>computer and associated wiring and sensors.  Talked to a
>guy at Mr. Gasket (they make the DFI/accel system used in
>many similar engines in the car mags) and he says that I
>would gain almost no benefit from a sequential system vs a
>batch fire system.  I also want to look at an ECM from Motec
>but it is a LOT more expensive.  Will there be a significant
>advantage to using sequential port injection vs batch fire? 
>Does anyone have any experience with either of these
>aftermarket programmable systems?  I want bulletproof
>reliability combined with stellar performance and tuneability. 
>Will I have an advantage to having a system that is
>programmable vs having to get someone to burn the correct
>chip for my engine for use in a standard GM computer?  I
>already have a laptop to run the software necessary to
>configure one of the aftermarket systems.  What do you all
>think?
>
>~~fred francis
>

If I were you, I would duplicate the GM LT1 engine specs (cam, CR,); install
the copy cat intake to allow use of the rear mounted distributer; use a
stock GM L98 ECM (MAF type). The copy cat will allow for idle control valve,
right?

Good look
GMD