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E-Bodies Cuda & Challenger (sponsor: ROSEVILLE MOPARTS) => Cuda & Challenger General Discussion (ROSEVILLE MOPARTS) => Topic started by: Racer57 on August 11, 2018, 01:34:12 PM

Title: Sweet looking setup.. Dual quad Hemi Injection
Post by: Racer57 on August 11, 2018, 01:34:12 PM
Friend of a Friend sent me this pic of his 70 Cuda. First time I've seen a pic of this.  :wowzers:
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: RUNCHARGER on August 11, 2018, 01:59:53 PM
Hmm: That looks pretty good. The carb throttle bodies keep an original look.
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: YellowThumper on August 11, 2018, 03:52:21 PM
That does look good. I would then paint the fuel rails a Matt finish black or even dark grey to have them not stand out as much.
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: ledphoot on August 11, 2018, 03:54:38 PM
That is pretty dang sweet..

If you wanna see a lot of EFI-Candy... Check out Rich Nedbal's site:

https://www.fastmanefi.com/photos

Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: 1 Wild R/T on August 11, 2018, 04:06:37 PM
So where is the TPS? IAC?   If your serious about keeping the stock look the fuel rails kill it & if your serious about FI the carb bodies make no sense.... :alan2cents:
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: CudaMoparRay on August 11, 2018, 07:12:05 PM
If trying to hide the setup, although it looks good to me as is also, I would just put a Shaker over it and it would look pretty much stock.
Besides with the Shakers on you could not see the beautiful carbs anyway back in the day.
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: Topcat on August 11, 2018, 07:37:12 PM
Here's my thoughts on this:

Cool effect? Yeah.

Driving everyday? Nope!

What are Hemi's known for?
Mid range to top end RPM.

Once you are at 2,500/3,000 RPM and climbing, as long as the engine is built well; why bother with FI/EFI?
Fuel atomization is doing pretty good at these mid to upper RPM's.


Certainly they are aren't known as handling cars where EFI etc. is a better choice going hard into turns.

Cold starts and fuel evaporation is a B!tch.
But that is par the course with carbs. 

Keep em carb'd unless heat and cold are issues where you live.   :alan2cents:
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: ledphoot on August 11, 2018, 08:32:33 PM
Sorry, I am not a fan of carburetors at all. EFI All Day Every Day for me. Wideband o2 and a computer tweaking your tune as you drive, handling the atmosphere, altitude, etc. etc. Get in, turn the key and away you go. A carb, even a well tuned carb, will never be as clean, if it is, it won't stay that way every single day of the year and everywhere you drive.
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: Topcat on August 11, 2018, 10:05:38 PM
Quote from: ledphoot on August 11, 2018, 08:32:33 PM
Sorry, I am not a fan of carburetors at all. EFI All Day Every Day for me. Wideband o2 and a computer tweaking your tune as you drive, handling the atmosphere, altitude, etc. etc. Get in, turn the key and away you go. A carb, even a well tuned carb, will never be as clean, if it is, it won't stay that way every single day of the year and everywhere you drive.

3 years later and my carbs are running like a Rolex...Or as they say Energizer batteries. 

My A/F ratio is probably at 15 to 1 at idle according to Roger who last helped me tune it.

Clean? Brown inside the tips.
Not Black. Plugs are are all Tan.

Sure it runs rough at first cold.
But once she's warm, it's running just as good.
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: Racer57 on August 12, 2018, 07:02:45 PM
To respond to some of your comments, Tremec with a 373 dana rear and 255-70 tires. 2300 rpm at 75 mph

Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: Mopsquad on August 13, 2018, 09:37:49 AM
Looks really clean...

I'm in the middle of my EFI conversion with a Shaker.  Not an easy job, but well worth the driveability etc...

Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: EFI5spdtom on August 13, 2018, 09:29:29 PM
Hello 1 Wild RT.  These photos are from my EFI Hemi.  Please note that this is my first time responding to a forum and the photos were posted by a friend of mine.  I have never posted myself before.  Anyway, the IAC is hidden behind the carb bodies. the TPS is on the drivers side at the back.  I kept the carb bodies (not original hemis) to get the proper spacing and height for the shaker base.  I did this conversion as a challenge and to keep it looking as stock as possible.  it is a big stuff 3 system.  After learning and tuning, it runs real good.  I have recently changed the intake to the Edelbrock singe plane EFI manifold.  It runs even better--nice idle, real smooth acceleration up to 6k.  It has a 226//232 hydraulic roller and custom pistons at 9.5:1.  Runs well on 91 octane.  Thanks for your interest. 
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: Brads70 on August 14, 2018, 01:22:45 AM
Quote from: EFI5spdtom on August 13, 2018, 09:29:29 PM
Hello 1 Wild RT.  These photos are from my EFI Hemi.  Please note that this is my first time responding to a forum and the photos were posted by a friend of mine.  I have never posted myself before.  Anyway, the IAC is hidden behind the carb bodies. the TPS is on the drivers side at the back.  I kept the carb bodies (not original hemis) to get the proper spacing and height for the shaker base.  I did this conversion as a challenge and to keep it looking as stock as possible.  it is a big stuff 3 system.  After learning and tuning, it runs real good.  I have recently changed the intake to the Edelbrock singe plane EFI manifold.  It runs even better--nice idle, real smooth acceleration up to 6k.  It has a 226//232 hydraulic roller and custom pistons at 9.5:1.  Runs well on 91 octane.  Thanks for your interest.

Welcome to the site.  :wave:
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: RUNCHARGER on August 14, 2018, 07:12:10 AM
Welcome to the site: I did a dual Fitech conversion on a Hemi and it is a challenge to get everything under a shaker for sure.
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: BIGSHCLUNK on August 14, 2018, 12:31:38 PM
Who wants to come over and set this up on NIKKI?  I will hand you wrenches and stuff....  :handshake:
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: CudaMoparRay on August 15, 2018, 12:09:26 AM
 :welcome: from Sylmar, CA
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: 76orangewagon on August 15, 2018, 03:38:33 AM
Sorry not a Hemi but I did a similar set up on my Small Block Duster. Dual Fast throttle bodies and Indy Cylinder Heads Mod Man intake.
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: Mopsquad on August 16, 2018, 12:36:59 PM
Quote from: 76orangewagon on August 15, 2018, 03:38:33 AM
Sorry not a Hemi but I did a similar set up on my Small Block Duster. Dual Fast throttle bodies and Indy Cylinder Heads Mod Man intake.

That's is one outstanding, clean installation!
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: EFI5spdtom on August 16, 2018, 10:59:52 PM
Mopsquad--the EFI manifold looks great painted.  Nice clean installation.  What efi system are you using?  how are you planning to fit the throttle bodies to the shaker base?  I kept the carb bodies in part to fit the factory shaker base.  i modified them a lot, took out the venturies and the choke mechanism and shortened the main shafts to fit the rails.   I also added an oil separator from Jegs to keep the manifold from accumulating oil from the PCV. 
Title: Re: Sweet looking setup.. Dual quad Hemi Injection
Post by: Mopsquad on August 24, 2018, 11:18:52 AM
Quote from: EFI5spdtom on August 16, 2018, 10:59:52 PM
Mopsquad--the EFI manifold looks great painted.  Nice clean installation.  What efi system are you using?  how are you planning to fit the throttle bodies to the shaker base?  I kept the carb bodies in part to fit the factory shaker base.  i modified them a lot, took out the venturies and the choke mechanism and shortened the main shafts to fit the rails.   I also added an oil separator from Jegs to keep the manifold from accumulating oil from the PCV.

Thx!

I'm using the Holley EFI setup as recommended by Rich at FastmanEFI. Right now, everything fits with regard to the shaker.  I'm using a 1" ring spacer on top of the TB's.  The spacers are slightly milled with and 1/8" angle forward to give me a little more clearance at the front edge of the shaker/hood gap.

I tried to get the Carters running great and they did but the driveability of the EFI setup and idle control/start up is so sweet.  Adding AC as well which would affect idle when the compressor turns on.  EFI controls that.