Radiator Mount Question

[TheManiac]

So, I noticed on the W-Bodies, the radiator side of the upper motor mount has two different styles.

- First Style is a 4 bolt configuration to hold to the upper radiator brace.
- Second style uses a 5 bolt configuration to hold to the upper radiator brace.

From what I see, the 3800 drive trains use the 4 bolt style. The 3100/3400 uses the 5 bolt style. Pics of both below (one is my Monte and the other is a pic I scavenged with Google images, if it belongs to someone, thanks for posting a pic I could use to easily demonstrate my question).

OK, guys, speculate

 

[rocknnachos]

So, I noticed on the W-Bodies, the radiator side of the upper motor mount has two different styles.

- First Style is a 4 bolt configuration to hold to the upper radiator brace.
- Second style uses a 5 bolt configuration to hold to the upper radiator brace.

From what I see, the 3800 drive trains use the 4 bolt style. The 3100/3400 uses the 5 bolt style. Pics of both below (one is my Monte and the other is a pic I scavenged with Google images, if it belongs to someone, thanks for posting a pic I could use to easily demonstrate my question).

OK, guys, speculate

The 3.1's use three bolts, not 5. I don't know why they are different but my theory is that the 3 bolt set up would be less expensive to make because it's a more simple design. The 3.8 needs the stronger mount that uses the 4 bolts... maybe?

 

[TheManiac]

@Rocknnachos - Thanks. I just got to see a 3400 equipped Impala and the mount is infact a 3 bolt configuration. Based on that discovery/knowledge, I would believe the 3800 4 bolt mount is a more solid setup (less ability to flex/bend).