Snapped flexplate bolt, would u ship it? Pic inside
Snapped flexplate bolt, would u ship it? Pic inside 
Well I'm ready to put my engine in and this happened. By the time I get a replacement bolt and IF I can get this one out, I'll be pretty far behind because of my schedule. I'm thinking of putting it together as is, anybody done this? Thoughts??? Thanks
TECH Senior Member
Joined: Jun 2016
Posts: 22,291
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From: Central Cal.
It would bug me, but maybe I'm just paranoid about crap like that.... Though a tractor that never sees north of 2500RPM is a hair different than an LS pumping out 400-600HP at 6000-7000 RPM. But that's just me....
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Teching In
Joined: May 2017
Posts: 27
Likes: 0
My biggest concern would be will it be unbalanced ?
That and depending on the power level and how hard the transmission shifts could play a part on longevity. I had a high power 70 SS 454 Chevelle w/T400 that shifted so hard I cracked 3 brand new flywheels over the course of a couple of years. With big power and hard shifting you have a lot of rotational stress on those bolts, in a case like that I surly wouldn't want to be minus one.
On a mild or stock set up and moderate driving my guess is ya it would probably hold but nows the time to fix it, (or at least drill & tap it and put a smaller hardened bolt in)
That and depending on the power level and how hard the transmission shifts could play a part on longevity. I had a high power 70 SS 454 Chevelle w/T400 that shifted so hard I cracked 3 brand new flywheels over the course of a couple of years. With big power and hard shifting you have a lot of rotational stress on those bolts, in a case like that I surly wouldn't want to be minus one.
On a mild or stock set up and moderate driving my guess is ya it would probably hold but nows the time to fix it, (or at least drill & tap it and put a smaller hardened bolt in)
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When bolts break like that they usually come out reallllly easily. It's when they are cross threaded or rusted solid and break that's a nightmare.
Get yourself a small kit of reverse drill bits, next time you have a bolt break just drill it with the reverse bit and the bit will run the bolt right out. Or you can use a pic or pocket screwdriver to grab a little piece of the bolt that's left and spin it round and round till it comes out.
Get yourself a small kit of reverse drill bits, next time you have a bolt break just drill it with the reverse bit and the bit will run the bolt right out. Or you can use a pic or pocket screwdriver to grab a little piece of the bolt that's left and spin it round and round till it comes out.
Teching In
Joined: Jun 2018
Posts: 14
Likes: 1
From: Satsuma, AL
Take the time to go get the same size from a hardware store in a hardened bolt, and put all new ones back in with some blue loctite. It won't take that long. Don't chance anything with a project car! I couldn't if it were me....
Like mentioned above, get a reverse drill bit and extractor. As long as it went in easy it should come out fairly easy. Either the bit will spin it out as your drilling or the extractor will get it.