You guys, I thought the bolts were marked "GM" but after actually cleaning them it turns out they are marked "11.9" which is actually an obscure metric hardness between 10.9 and 12.9 (us between grade 8 and 10).
The guy at fastenal (who actually seemed pretty knowledgeable) had never even heard of it.
Nobody makes flange head bolts in .etric grade 12.9 and you can hardly find any bolts in 11.9, period.
The fastenal guy said they had 12.9 hardness m12x1.75 threaded rod in 3 foot lengths for 200 dollars a rod (I would need two). I would also need 12.9 nuts and washers (I assume minimal expense).
I found a company who sells a rod and nut and washer set for the 6.2/6.5 for about 400 bucks. I guess that's realistically my only choice if I don't want to re use bolts that appear to be crack-prone. (Maybe even from the factory?)
So wow that's a bit of bad news as the stud kit is pretty expensive and I am on a budget.
Thank you for that link I am debating getting those, but what do I do about the cracked outer ones? Buy an 80mm long grade 12.9 and cut the end with a hacksaw so I don't mess with the heat treating, and use a washer under it? I'd be fine with that if it worked...
Guys apparently arp had nothing to do with the head bolt kits you see for sale and there have been issues with them because the studs aren't long enough and they strip out.
We can't find the lower bearing bolts online but sctrailrider is able to get them direct from the manufacturer for about 200 bucks. Also, they are torque to yield and single use bolts which may be why mine cracked, I did re use them once to check the bearings.
So if you need the bearing bolts please send sctrailrider a pm he's been awesome getting me the custom bearings and bolts!
Looking forward to getting the truck back on the road!
Hey, looking at a 1987 Chevy V10 with the 6.2 Detroit 700r4 transmission Dana 60 rear 44 front 3.08 gears and was curious on what the payload and towing capacity was, have been searching the internet and cannot find anything...help?
6/1991 V2500 Suburban 6.2L 4L80e large aftermarket oil and trans. coolers, Banks Kit (worth every penny) 135K miles
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I have a 6.2 out of a 1989 m998 and I am using to go in my 93 3500 single cab single wheel truck that has a 6.5 turbo diesel in it but I had something go thru my oil pan and I haven’t even taken out of my truck yet. I thought there might be to much damage in my 6.5 so I was going to use this...
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