Help with rear ps bracket for 4.2 to 4.0 conversion

[Jim Dandy]

Hey Jeep Brothers and Sisters. Here's the latest update and a request for some help.

Today we got the chrome headers on and the Clifford 6 to 8 intake with the twin 2bbl carbs installed. Love how it's looking and I'm pretty excited.

The challenge is that with the 4.2 to 4.0 head conversion we did, the #0630 head is taller and two of the original 4.2 rear ps bracket holes don't line up. I know the conversion is common and there's a lot of talk about this issue but there's nothing really prominent out there about the solution. I need to know how to modify the bracket or find a rear 4.0 ps bracket that will fit.

Let me know your thoughts and if you know a solution for the bracket I'd be grateful.

 

[kevman65]

Don't know what the accepted fix is.

But if it were me I'd trim the corner of the bracket to fit with the holes lined up.

 

[Jim Dandy]

Don't know what the accepted fix is.

But if it were me I'd trim the corner of the bracket to fit with the holes lined up.

I can notch out for the exhaust pipe but the primary issue is the bracket being too short as well to reach those two bolts.

 

[kevman65]

Okay, I see it in the third picture when I scroll down. The front bracket prevents the whole thing from rolling up.

A good weld shop can alter the bracket to make it fit.

It's basically cutting a section out and adding a taller section and drilling two holes. Bracket appears to be 1/4" or 3/16" thick flat stock.

 

[Jim Dandy]

Okay, I see it in the third picture when I scroll down. The front bracket prevents the whole thing from rolling up.

A good weld shop can alter the bracket to make it fit.

It's basically cutting a section out and adding a taller section and drilling two holes. Bracket appears to be 1/4" or 3/16" thick flat stock.

That's what I'm starting to think too. I just thought that with so many others out there doing the conversion there would be more out there about it and/or a prefabbed bracket you could buy.

 

[Jaybird 11]

That's what I'm starting to think too. I just thought that with so many others out there doing the conversion there would be more out there about it and/or a prefabbed bracket you could buy.

That's what I did. I cut the bracket bolted it where it needed to be then cut a piece to fill the gap. Tack welded it in p!ace. Then took it apart and welded it together.