2 vs 4 bolt Y-Pipes...
Thread Starter
Le Mans Master
Joined: Mar 2006
Posts: 5,262
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From: E. Amherst NY
2 vs 4 bolt Y-Pipes...
My new Walker Dynomax system showed up yesterday. Dropped the old system this morning, only to realize my Y-Pipe is too small. The one that came off was a 2 bolt. Can I use a 4 bolt without having to change out the cat?
The Dynomax one I'm looking at is the 4-bolt, which raises the question.
The Dynomax one I'm looking at is the 4-bolt, which raises the question.
Team Owner
Joined: Feb 2006
Posts: 24,460
Likes: 7
From: sw Ohio
They changed the bolt pattern sometime in '86 (i see your's is a '86). I had the same problem with my '85 so I just cut off the end and welded it together 
If thats not something you want to do then you'll have to get a later style cat.
If thats not something you want to do then you'll have to get a later style cat.