The four self learning efi systems we chose to evaluate are the msd atomic fast ez efi 20 edelbrock e street and holley terminator efi. Or get the q jet version with built in progressive linkage.
Efi Fuel Delivery Knowing What You Need Is Key To Smooth Running
Holley vs edelbrock efi. Now we can find out if all the hype is true. Well edelbrock has you covered. The best power with a carburetor was 503 hp at 5800 rpm and 499 lb ft of torque at 4400 rpm. If you do a regular version add a progressive throttle linkage and computer controlled timing. Holley sniper or edelbrock pro flo 4. These are the fuel injection kits we see most often discussed and debated on the web.
Sniper has several versions. Nearly 30 years after its entry into the fuel. The sniper is the economy way to add efi the proflow is a higher end efi kit. The edelbrock is based on the carter afb which was used on cars such as 426 hemi mopars and 409 chevys. Next generation efi when choosing to upgrade your engine to modern fuel injection look no further than edelbrocks pro flo 4 efi systems. See all 18 photos.
All of these systems use a dedicated standard 4150. Lets take a ride with august to see the differences and what application is right for you. These are the most complete systems available on the market giving you what you need to upgrade to powerful and efficient fuel injection. A coolant temp and o2 sensor need to be added and tied to the controller for everything to work but all of the computer componentry and hardware is actually contained inside the throttle body which makes for a neat and tidy. Ever wonder which efi system is right for your muscle car truck or suv. Engine dyno test of holleys sniper efi conversion.
The holley will ultimately make more power than the edelbrock due to its wider range of tuning capabilities. The holley sniper efi kit davin installs in place of the carburetor requires the addition of only minimal wiring. Edelbrock made an early entry into the efi world in the 1990s really not too long after it started manufacturing carburetors. We installed and ran all three units on a 66 biscayne wagon that has a very basic small block chevy in it. Here we look at the holley sniper fitech go street efi and the fast ez efi.