In-Store Pickup Location Close

Holley Pro-Jection Fuel Injection Systems 502-20S

Get Free Shipping with Your Order over $99!

Throttle Body Fuel Injection, Pro-Jection, Speed Density, 670 cfm, AMC, GM, Mopar, Ford, Plymouth, V8, Kit

  • Order this item and get free delivery and handling on your entire order! Oversize fees also waived on this item. Valid on orders shipped in the contiguous United States.

Estimated Ship Date: 9/22/2014 (if ordered today) Would you rather pick it up? Select Location

Brand: Holley
Manufacturer's Part Number: 502-20S
Summit Racing Part Number: HLY-502-20S

UPC: 090127429327
Injection Style: Throttle body
Metering Style: Speed density
Intake Manifold Included: No
Fuel Rails Included: No
Throttle Body Included: Yes
Throttle Body Mounting Flange: 4-barrel square bore
Venturi Quantity: 2
Airflow Rate (cfm): 670 cfm
Throttle Body Material: Cast aluminum
Throttle Body Finish: Natural
Injectors Included: Yes
Injector Size (lbs/hr): 80 lbs./hr.
Calibration Module Included: No
ECM Included: Yes
Wiring Harness Included: Yes
Oxygen Sensor Included: No
Fuel Pump Included: Yes
Fuel Pressure Regulator Included: Yes
Distributor Included: No
MAP Sensor Included: Yes
IAT Sensor Included: Yes
TPS Sensor Included: Yes
IAC Motor Included: Yes
Quantity: Sold as a kit.
Notes: Will support up to 275 hp.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Now you can get the horsepower and drivability benefits of electronic fuel injection for your carbureted, non-computer controlled vehicle. These Holley Pro-Jection fuel injection systems are complete stand-alone systems, requiring no OEM computer assistance. They're available in 1, 2, and 4-barrel models, with sizes ranging from 300 to 900 cfm. All systems come with everything needed for installation, including the fuel pump and filter, hose, a wiring harness, ECU, throttle body, hardware, and a complete detailed instruction booklet.


Most Helpful Reviews Review this Product

1 Customer Reviews for Holley 502-20S - Holley Pro-Jection Fuel Injection Systems

Average Customer Review

5 Star


4 Star


3 Star


2 Star


1 Star

+See All 1 Reviews

Great EFI

Summit RacingSummit Racing Verified Purchase

I can't say enough about this fuel injection system. I installed it on my 72 International Harvester with the IH 304 motor. It took about a day or two. I spent a lot of time trying to make sure the install looks good, like it was stock. It would probably be difficult to make this look good on a "Show Truck", which my Scout definitely isn't. Now my truck starts up, first turn, every time. Even if it has sat for a month. Truck runs great. My butt dyno says I might be somewhere near the stock 130 HP! If I ever use a program it yourself EFI again, I will install an O2 gauge or get something I can monitor the exhaust with to program it a little better. I feel so firmly about Holley Fuel Injection, I will be installing one on my 68 Lincoln Continental. If it runs anywhere near as well as my Scout, it will be money well spent! more

1 of 1 found this review helpful.

report abuse

Report Abuse Close

If you feel that this review is inappropriate and should be removed from the site, report it to us by clicking the "Report Abuse" button below.


Reviewer: BEN from VA

Date: May 28, 2014

Ease of Installation

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

Back To Results
Email this page Close