1990 360 engine, trying to retrofit it to use a mechanical fuel pump.

[krazykuda]

I’ll have to look for mine. I don’t remember the key being too short.

The one they sent me had less metal than the picture in the posts above...

If you have to use the Hughes extension kit, get a regular cam keyway and grind it down if needed so it fits the full slot in the timing chain gear and the nose extension...

Don't take any chances....

 

[Bobzilla]

However, I recommend getting a cam with a nose and using the standard style keyway and cam eccentric... It's cheaper to buy a new cam with the proper nose, than blow up an engine... Maek it like Chrysler originally designed it and has proven to work with decades of reliable engines in the field...

Build the engine right the first time, and then you won't have to do it over later....

Mopar Performance offered these extensions first. So it basically is a Chrysler designed part. They work fine when installed properly.