Can you put a HEI distributor on a jeep 258?
One swap I’ve always liked is the big cap HEI distributor swap in the Jeep 258 straight six engine. One of the great things about it is, it is extremely simple. When I replaced my CJ-6s tired 232 for a fresher 258, I put an HEI in the 258 rather than swap over the Motorcraft ignition the 258 came with.
What are the results of upgrading a jeep to GM Hei?
The greater power at the spark plug gap consistently ionizes the air across plug gaps of .045 to .060 inches. The most notable results of upgrading your stock Jeep to GM HEI include:
How do you change a HEI distributor on a GM I6?
Use a hammer & punch to drive the pin out of the drive gear and stem of the distributor. The old gear can now be removed and the new gear & pin installed. Remove the old cap. Note: Those with pre-79 258’s may need to grind or file the part of the HEI distributor shaft that drives the oil pump.
Where does the HEI plug go in a Chevy Nova?
These distributors were most common in the Chevy Nova, vans and trucks. You will be looking for the HEI with the coil built into the cap. The proper HEI will already have 3 wires coming from the distributor body and plug into the coil on top of the cap.
One swap I’ve always liked is the big cap HEI distributor swap in the Jeep 258 straight six engine. One of the great things about it is, it is extremely simple. When I replaced my CJ-6s tired 232 for a fresher 258, I put an HEI in the 258 rather than swap over the Motorcraft ignition the 258 came with.
Is the Jeep 258 CID I-6 eligible for ignition upgrade?
The Jeep 258 CID I-6 from 1978 to 1990 are eligible for this upgrade. The 258 I-6 from ’78 to ’90 used the same Motorcraft distributor for all variations. The distributor type is one of the most dependable ever released from the factory.
The greater power at the spark plug gap consistently ionizes the air across plug gaps of .045 to .060 inches. The most notable results of upgrading your stock Jeep to GM HEI include:
Why did my Jeep 258 gain 11 horsepower?
The 11 horsepower gain was probably due to a set of eight working plugs, and the furthering of the break in process. I use mostly Autolite plugs. I have less trouble with them, and have a few less failures out of the box. I also had pretty good experience with Nippon-Denso (spelling) spark plugs.