In order to remove the oil pump off my Olds 455, I had to go out and purchase a 12 point 9/16th socket. All I had were 6 points in my box. By using this socket, I was able to remove the pump....no problem. The actual bolt size is a 3/8-16 (course thread).
7/16-14
27
the oil pump securing bolt is a 7/16-14 thread bolt x 2- 3/8 inch. long. it should be torqued to 60-70- ft. lbs. of torque
which bolt
5on 5
68-72 Oldsmobile big block 455
3/8-16x1 1/4"
3/8-16
The bolt size for the distributor cap on a 1999 Oldsmobile Bravada is typically a 7mm or 8mm bolt. However, it's important to check your vehicle's specific manual or consult a parts supplier for confirmation, as variations can occur. Always ensure you have the correct tools and specifications before proceeding with any repairs.
You need a 15 mm wrench.
If the number 8999289 is a casting number inside a bell the first number is a 3. Then the block that is in question would be a 4 bolt block with 4 main caps.
got it fixed - Napa gave me #10 metric bolt. Power Steering restored!