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Since this is suppose to be an info thread and not a troubleshooting thread it is being closed. if you have questions on troubleshooting an issue please post to a similar thread or start a new one

Stock is a bolt. Others have reported other size bolts installed. Who knows what has been installed over the last 30 years. ;-)

Your gear reduction starter requires the straight bracket. It is available at the dealer. that may be why you had a hard time mounting the starter and why the shop did not hook it up previously. See post #45 The curved bracket is for the older direct drive and is no longer available. Some...

Okay guys this a starter info thread, not a what size is this do hicky thread. Please start a new one for anything besides a starter. Moved some other item questions to their own threads.

1) It happens because of the large amount of torque required to turn the crank on the high compression engine. Without proper support the two bolts will flex and break. 2) Many options. Sometimes if there is any threads still exposed the bolts will come out with just a chisel. If not you will...

Just an FYI. The TM 9-2320-289-34P parts manual has a breakdown picture of many parts of the truck, the starter being one of them. I am a picture guy. Show me a picture and I can usually tell you how something goes together. And I can usually tell is something is missing. So to answer your...

Gear reduction on the left and direct drive on the right

Which starter do you have? Direct drive or gear reduction?

each starter is different. To many manufactures to tell for sure. You will have to use trial and error. Should be metric.

Sorry none at this time. Contact Hawkman. He usually has some parts CUCVs.

According to the tech manual, the bracket to block bolt is a M8x1.25x20 A 1.5 is too big unless the block has been modified. Another poster even listed it as a 1/4-20 which is also wrong.

Interesting that you used 1/4x20 on the block as a metric bolt is called for in the tech manuals. M8x1.25x20

It has been posted many times but here it is again. Gear reduction on the left Direct Drive on the right and installed on the gear reduction

The support bracket is a dealer only item. You might find one at a junk yard. Sorry. I have a few at the house. I could send you one out but it would take a couple of days also. Are you getting the old style direct drive or new style gear reduction starter? The support brackets are...

The 12v diesel starter for a 1984 Chevy K30 with J-code engine. It should come with the stud for the support bracket. Any parts house should be able to order it. These truck are getting older and they don't stock stuff like this on the shelf. Usually have it at the warehouse.

Bumped to update part numbers and sizes. GM 15544950 - Starter Bolt - dealer item. Some parts stores can get them in packages of 5 GM 14060613 - Starter Bracket to Block Bolt - M8 x 1.25 x 20 (hardware store) GM 14028931 - Starter Bracket - old style Direct Drive starter - no longer available...