HEI Upgrade for 1977 CJ5 258
Rescue Diver
Full Time Jeeper
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- Location
- Kansas City
- Vehicle(s)
- 1979 CJ-7 with a fiberglass body and 1982 wide track axles, 258 I-6 with a 1995 4.0 head, HEI distributor, Motorcraft 2100 Carb, T-18 wide ratio tranny, Super Lift Springs and 33s, a 1997 BMW 328i, and a 2010 REDLINE CONQUEST TEAM Cyclocross Bike. :)
I made no false claim, and 'm not saying it's not possible to have a problem with an HEI in an inline 6. What I'm saying is that IT"S A FACT THAT THE INLINE 6 DOESN'T HAVE A SOFT CAM GEAR LIKE THE V8 HAS!!!Rescue has made a FALSE CLAIM that there is no issue with AMC 258 i6 / 4.2l /HEI that the use of HEI is only a problem with the HEI/V8 AMC....... will add in my opionion.
In other words, any problems anyone might have with a six banger running an HEI is not because of that. It's because it wasn't set up and aligned correctly. Either because the gear they're putting on the HEI doesn't have the mounting hole at the correct height to mesh the gears properly, or maybe their oil pump shaft is a mm too long causing binding with the distributor shaft when it's tightened down, which may damage bearings and chew things up.
Fortunately my HEI that was a cheapy on ebay($58 new delivered) came with the correct gear already installed.
I've read all of the links I could find on this issue, so please quit posting them for me, because I have no intention of reading them again. I stumbled across this issue after buying my HEI two years ago, and I did the research because it had me worried. Turned out that the problem is only a problem if it's not set up correctly, but if it is put together right with the correct gear, there's no reason what so ever not to run an HEI in an AMC I6.