V8Rumble

iTrader: (9)

I need to find out if anyone can tell me the size of the bolts that fasten the flywheel to the crankshaft. I've found a reference to them in the thread below, but just referencing the "11mm" bolt head size does nothing to account for length & thread pitch.

https://ls1tech.com/forums/conversio...-buy-them.html

I've also searched, but virtually every thread I've found is asking about the bolt that holds the balancer/crank pulley on..

If anyone happens to know that, I'd appreciate it if you could share it with me, since not knowing that is currently holding my project up...

EDIT: I guess the only thing that I really need to know is, what's the thread pitch for those bolts?? I can measure with my micrometer & get a pretty good idea of the length, but I don't think I have any way of getting the thread pitch - and it appears that I may have stripped one of those holes out...

Thanks in advance.

i r teh noobz

iTrader: (4)

ARP sells a kit for 20 bucks or so. Maybe the length will be listed in an item description?

V8Rumble

iTrader: (9)

<SMH> Holy crap, I should've thought of that!!

OK, went to Summit, called up the ARP bolts, and...

http://www.summitracing.com/parts/arp-330-2802/all

...it says 11mm x 1.5 (presumably inches). OK, well, if ARP doesn't list it, let's see if GM will!

http://www.summitracing.com/parts/na...make/chevrolet

Great... Another "11mm x 1.5"... The other alternative is '7/16-20 in. RH' which I suspect is the same thing...

Well, at least I have something to investigate now, thanks for the great suggestion.

2stroke

looking for some stock ones or want new? I have a used set laying around

V8Rumble

iTrader: (9)

Actually... I'm asking so that I can (HOPEFULLY!!!) get the correct 'time-sert' tool.

It appears that one of the six bolt-holes at the rear of my crankshaft has stripped out...

I appreciate the (implied) offer, but I actually have a decent set of bolts...

i r teh noobz

iTrader: (4)

11mmx1.5 is the thread pitch. The ARP listing also says 0.8" length from the bottom of the head.

97FormulaWS-6

iTrader: (1)

Yup. No Inch-thread bolt is going to work, you're just going to strip them out.

Best bet is a heli-coil or threadsert, and with a crank, personally, I'd have a machine shop do it.

V8Rumble

iTrader: (9)

Yeah, I might have a line on a time-sert (crossing my fingers), which is why I was asking about the size.

But honestly, if I have to pull the crank & pay a machine shop to fix it, that's JUST ABOUT enough reason for me to start wondering why I shouldn't just drop a new 4" stroker crank in there... (I know it would cost more - but I'd sure feel better about it!) I just haven't done any research on those, so I don't know if there are any out there that would still work just fine with the stock rods, etc...

Thanks for all of the feedback guys.