Ok throwing out ideas tonight with dad on his 72 cuda we are building. He can buy a complete 5.7 through his dealership. He and I have never wired up one before so I'm kinda skiddish. He threw out an idea of going with one of the dual 4 intakes. In doing so does anyone know the height of a 5.7? Are they taller than a 340? If we went with a dual 4 set up what other wiring would be needed on 5.7? Naturally I know we will need different motor mounts. The 5.7 he can buy is complete top to pan with exhaust manifolds. It's a brand new one. Was thinking we could sell off the fuel injection stuff to off set the carb related items. Basically he's wanting to do something different. My main concern is the cars all painted so worried about hood clearance issues.

Thanks
Corey

You could probably google the engine specs and diagrams of the 5.7 Hemi but I'm sure the deck height is taller than tradional LA blocks. take a look at a 5.7L Hemi piston !

Why don't you keep the EFI? I kept it on my 55 Dodge P/U and love it. 20 mph on the high way and more than enough power to keep me happy. All you need is a wire harness from Hotwire. They sell an engine management system that includes, the harness, ECU and drive by wire peddle. They will even put a tune in the ECU for you.

So do you wire engine up seperatly and use original wires for rest of car? How does it hook into the ignition switch? Did you have to run an electric fuel pump? Was it in the tank or exturnal? How about the tranny did you have to wire that up?

I agree on the EFI being a good choice but, I went the carbed route. I used a XV single 4bbl intake and 750 eddy carb. For ignition I used the MSD Hemi 6 setup for the '06 and newer coils. Very clean installation and very simple to hook up. There a only a couple of wires to hook up and you are ready to go. You will need an electric fuel pump for either carb or EFI. Like mentioned above, a 727 or manual trans requires no wiring. The simplest auto overdrive would be a 46RH (A-518) with a hydraulic governor. Only three wires to hook up for overdrive and lock-up torque converter operation. As for hood clearance, you should be fine. You may have to change the factory installed oil pan for on that works with the Cuda.

There is a Guy on here Named Justin. He was willing to modify wiring harnesses for a very fair price at one time. I spoke with him on the phone and he does know what he is doing. His call name on Moparts is wldtm, He is a Super nice Guy! By the way I would stick with the Fuel Injection to get the full benefit of the swap.

Thanks I'll check that out. I know the fuel injection would be nice to drive but dads also thinking the dual 4 would be a cool factor item. He will never drive it cross country. Probably longest would be 5-6 hour drive one way if that.

you will not get much out of the stock fuel injection stuff,as mentioned spend the money with Hotwire and have them build you a plug and play harness.

Another plus for EFI is you don't have to worry about running today's 10% ethanol fuel. On hot day that grap likes to boil in the float bowels. I had problems all the time with my carbureted 512 stocker doing that. Also every time the temperature changed my tune went out the window and I had an off throttle stumble I could never quit tune out. I finally found a local station that sells 100% 92 octane gas. The stumble is gone, the car stays in tune better and the fuel doesn't boil in the float bowls. You wont have those problems with EFI.

Edelbrock Dual-Quad Intake Manifold and Carb Kits





Product images may differ from actual product appearance.

A huge hit among street rodders, these Dual-Quad Kits offer the ultimate set-up for anyone who wants the look and the performance of dual-quad carbs. They include an Edelbrock RPM or RPM Air-Gap Dual-Quad intake manifold and two 500 cfm Thunder Series AVS carburetors calibrated specifically for dual-quad applications (one manual choke, one electric choke). To make the installation simple, these kits also include our high-tech progressive throttle linkage, Russell fuel inlet and high-quality Edelbrock intake gaskets. The manifold and Thunder Series carbs are available with a standard finish or Edelbrock's bright EnduraShine chrome-like finish for long lasting show quality looks.

Edelbrock's EnduraShine finish is something you have to see to believe! EnduraShine is a bright silver chrome finish with powdercoated durability. Three-step Vacuum Metalizing Process: base coat, aluminum coat, and clear top coat. It resists discoloration from heat and has an amazing chemical resistance. The clear top coat enhances polished aluminum look for a great appearance but you never have to polish it!

Edelbrock Dual-Quad Manifold and Carburetor Kits include:

All New design RPM Air-Gap Dual-Quad intake manifold engineered for increased horsepower and torque
Satin or EnduraShine finish
Thunder Series AVS carburetor precision tuned for accurate two-carburetor calibration
Endura finished fuel inlet
Progressive throttle linkage for accurate throttle position and carb timing
High-quality Edelbrock intake gasket set
American Made Performance and Quality only Edelbrock can provide





2 Products View All
Chrysler
EnduraShine Finish

350-20764
Dual-Quad Manifold and Carb Kit
Chrysler 5.7L Hemi
RPM Air-Gap Intake Manifold
500cfm Thunder Series AVS Carburetors
EnduraShine Finish

More info on Edelbrock 20764

Fits Applications
FREESHIPPING
& HANDLING!
$1,499.97
Order Today Ships 02/04/14
 
Chrysler
Satin Finish
  350-2076
Dual-Quad Manifold and Carb Kit
Chrysler 5.7L Hemi
RPM Air-Gap Intake Manifold
500cfm Thunder Series AVS Carburetors
Satin Finish

More info on Edelbrock 2076

Fits Applications
FREESHIPPING
& HANDLING!
$1,249.95
Order Today Ships 02/04/14
 

2 Products View All

If he is buying a New 5.7. Be aware that the 09 up engines use a different intake than the early 5.7.

Yes it is a new one. I believe it's a replacement for trucks. I'm figuring the oil pans gotta be changed out. Any ideas if pick up tubes are same or need to be changed like you would from sat a 360 truck to car 360?

Just talked to hot wire. Sounds like the harness would be like 995.00. Depending on what tranny n year engine it's depends on computer programming cost. Said he needs to buy from o2 sensors and gas pedel. Said they use factory switch but has to put like a push button on dash to push after switch is turned on. What has anyone done for a pedel?