Crank Hub Bolt
Thread Starter
TECH Addict
iTrader: (25)
Joined: Nov 2004
Posts: 2,529
Likes: 0
From: Garden City, KS
Crank Hub Bolt So I was going to bolt on the hub tonight, but the bolt will not thread. The last 2 threads on the bolt are a little damaged, I'm guessing from using it to pull the hub off, but I figured it would still try to thread into the crank.
The crank is a Callies Dragonslayer unit, would the threads be different?
The crank is a Callies Dragonslayer unit, would the threads be different?
Threads will be the same. They're the same for all later model SBC's and LTx's. If it was mine, I'd replace that bolt, and then carefully run a thread chaser down the snout of your crank...
As mentioned above, be sure to clean and chase the thread.
Try to find an automotive grade (black) bolt to replace the old one.
You want something you can torque and that won't rust.
I've picked them up at the local hardware store.
Don't try to run without one; even though the hub is pressed in, it will come loose.
(ask me how I know)
TECH Veteran
Joined: Dec 2008
Posts: 4,145
Likes: 61
From: Little Rock, AR
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
The color has absolutely NOTHING to do with the "grade" of the bolt. Doesnt mean its "automotive grade" or anything.
Period.
OP, what you need is a grade 8, 7/16-20 bolt that is 2 1/4 inches long. A little shorter, or longer wont work.
Go to Fastenal and ask them for that size in a grade 9, if they dont have it they can order it.
(Dont get confused with the grade terminology, "grade 9" just has a little higher tensile strength and has a fewer better design features that make them a maintenance grade fastener, which is a step above OEM.
If you dont have any luck that way SS RRR has some extra stock ones, or I can send you one at worst. (I sell fasteners for a living).
Period.
OP, what you need is a grade 8, 7/16-20 bolt that is 2 1/4 inches long. A little shorter, or longer wont work.
Go to Fastenal and ask them for that size in a grade 9, if they dont have it they can order it.
(Dont get confused with the grade terminology, "grade 9" just has a little higher tensile strength and has a fewer better design features that make them a maintenance grade fastener, which is a step above OEM.
If you dont have any luck that way SS RRR has some extra stock ones, or I can send you one at worst. (I sell fasteners for a living).
Thread Starter
TECH Addict
iTrader: (25)
Joined: Nov 2004
Posts: 2,529
Likes: 0
From: Garden City, KS
I got it on last night. Found out the hub wasn't even on all the way and that the underdrive pulley wasn't lined up correctly, that is why the bolt wouldn't start right.
Took the underdrive off, got the hub seated all the way and the bolt went right in. With lots of locktite of course. LOL
Took the underdrive off, got the hub seated all the way and the bolt went right in. With lots of locktite of course. LOL
