[Diy_efi] EFI--Manifold types

[cobraman at insightbb.com]

Custom Lunati 236/242 hydraulic roller on 110c w/ 1.6 rockers. Big torque, 
lousy idle. TomS 


> TomS,
> 
> We may be running different cams that allow you to make power up that high.
> I'm restricted by emissions tests in my city so I couldn't use a cam that
> would give me a very high operating range. If I can't spin the motor to make
> power, I'm wondering if a different manifold can help me make more torque
> lower in the operating range. You may be right about the port sizes on the
> Pro-Flo manifold as I did not measure them and compare to the Victor Jr.
> 
> Garrett
> 
> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]On
> Behalf Of CobraMan
> Sent: Tuesday, August 24, 2004 9:40 PM
> To: A list for Do-It-Yourself EFI
> Subject: Re: [Diy_efi] EFI--Manifold types
> 
> 
> I disagree... I have a 6" rod 400 with Edelbrock's Pro-Flo and it hits at
> 2000 and goes to 6400 when the cam quits. > 400 ft lbs from 2200 to 6200 at
> the wheels. The ports are smaller than a victor Jr. but looks the same. TomS
> ----- Original Message -----
> From: "Garrett P. Beauregard" <gpbeau at cox.net>
> To: "A list for Do-It-Yourself EFI" <diy_efi at diy-efi.org>
> Sent: Tuesday, August 24, 2004 11:03 PM
> Subject: RE: [Diy_efi] EFI--Manifold types
> 
> 
> > you've hit the issue right there. I'm running a 383 with Edelbrock's
> Pro-Flo
> > system which uses the Victor Jr. manifold. Pretty weak down below but the
> > motor just doesn't like to spin up to where the Victor Jr. wants to
> breath.
> > Seems to me a big dual plane (Performer RPM and the like) would be the
> > solution but have been getting conflicting information on the tuning
> effects
> > of manifold design with EFI. If I'm going to step up to a "real" efi
> system,
> > I don't want to hobble it with the wrong manifold.
> >
> > Thanks for the link--I'll see what they have to say.
> >
> > BTW--does anyone have any links to suppliers that might have screw in
> > injector bungs to convert a carb manifold? This would help those of us who
> > are TIG-challenged.
> >
> >
> > Garrett
> >
> > -----Original Message-----
> > From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]On
> > Behalf Of Mike V
> > Sent: Tuesday, August 24, 2004 7:54 PM
> > To: A list for Do-It-Yourself EFI
> > Subject: Re: [Diy_efi] EFI--Manifold types
> >
> >
> > At 09:24 PM 8/24/2004 -0500, you wrote:
> >
> > >I have an edelbrock victor jr that we converted to EFI.  It's currently
> on
> > >my little 305 until that blows, then I'll probably slide a 400sbc under
> it.
> > >It's lacking power off the line, but once I hit about 3200 RPM, it feels
> > >like a rocketship is taking off.  Never really felt a powerband quite
> like
> > >it.  I'd imagine that with a 400sbc, the powerband would start at about
> > >2300rpm or so.
> >
> > 305 to a 400?  You are in for a major torque fest.  8-)
> > I went from a 350 and 5.13 gears turning 11.90s
> > to a 400 with 4.10 gears turning 10.90 ETs.
> > Same hyd Cam, heads and Vic JR intake.
> > You will love it.  Just don't rev it too high,
> > especially if you use the 400's short rods..
> > My 400 rarely went much over 5,000 RPM.
> > My burnout was always right at 4500 RPM in 2nd gear.
> > It lasted two seasons, then, the guy I sold the car to
> > broke a cylinder on the burnout his 2nd weekend at the track.
> > You guessed it.  7500 RPM in the water - game over.
> > Gawd -I loved that engine.  It was like a tractor.
> > Mike V
> >
> >
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