Start here

Converting the EFI Small Block Ford 302 to Carburetor Considerations

Read these notes before you start: what to change on an EFI roller block, the torque specifications, the cylinder numbering and how to plug the dipstick hole.

When doing a build like this a few things need to be considered and rectified prior to doing this build. There were small differences between the older ford 302’s and the newer EFi ones. These are the things to notate and fix.

  • The timing cover needs to be swapped to a mechanical fuel pump style (read post & see photos here)
  • An oil filer adapter needs to be used when converting the explorer or oil cooled H.O. versions (read post & see photos here)
  • A fuel pump eccentric and longer cam dowel needs to be added to the cam gear. (read post & see photos here)
  • You will need to plug the block oil-dipstick hole with a brass 1/8″ NPT plug and blue RTV. You will also need to RTV and feather the underside of the block. (scroll down to see photos)
  • The intake manifold needs to be swapped for a carburetor model.
  • The oil pump, pickup, and oil pan need to be swapped to a front sump style (depending on the model your EFI donor came from) (read post & see photos here)
  • You need a new dipstick for the timing cover.

The rest of the items you see are pretty straight forward when it comes to building your new 302. Email me with any questions. I will help.

Torque Specifications For Small Block Ford 302

Use these torque specifications as a reference when building your budget 302. When using ARP bolts, follow their specifications always.

Bolts or PartsLube or SealerTorque to:
Main CapsEngine Oil70 ft-lbs.
Outer Main Cap BoltsEngine40 ft-lbs.
Connecting Rod 260, 289, 302Engine Oil25 ft-lbs.
Cylinder HeadsUse Sealer70 ft-lbs.
Rocker ArmsEngine Oil20 ft-lbs.
Oil PumpEngine Oil25 ft-lbs.
Oil PanEngine Oil15 ft-lbs.
Camshaft Thrust PlateThread Locker10 ft-lbs.
Cam Bolt (upper gear)Thread Locker40 ft-lbs.
Front CoverEngine Oil20 ft-lbs.
Intake Manifold w/ GT40Non- Hardening Sealer25 ft-lbs.
Valve CoverEngine Oil10 ft-lbs.
Flexplate (Automatic)Thread Locker85 ft-lbs.
Flywheel (Clutch)Thread Locker85 ft-lbs.
Clutch Pressure PlateThread Locker35 ft-lbs.
Center bolt (Harm. Balancer)Thread Locker90 ft-lbs.
BellhousingEngine Oil25 ft-lbs.

Cylinder Numbering & Distributor Rotation Ford 302

This image is fairly common around the net but is a good reference. You may use the image however you like.

01Cylinder Numbering & Distributor Rotation Ford 302

Plugging the engine block oil dipstick hole

These are the steps I take to plug the engine block dipstick hole. This method works and is very inexpensive. This method is permanent and never leaks. This is a brass NPT 1/8″ plug. Tap the threads and set the plug with RTV on the threads. After, turn the block over and add RTV sealer into the hole and feather out to make a clean finish. DO NOT: Use a cork, wood, or any other foreign materials. Use a plug and do it right.

02This is the 1/8″ NPT brass plug used to plug the existing oil dipstick hole.
03This is the 1/8″ NPT brass plug used to plug the existing oil dipstick hole.
04After setting the brass plug into the hole, add and feather blue RTV on the underside of the block to guarantee a perfect seal.