Source for replacement flywheel to crankshaft bolts (stock 2.8 V6) (Page 1/1)
pmbrunelle JUN 22, 02:02 PM
The P-book shows GM PN 476576. This bolt appears to be discontinued, or no longer available.

Does ARP 102-2803 for the Nissan 2.0L SR20DE/DET work? It is 0.5 mm longer than stock, and the head looks slightly different.
fierofool JUN 22, 06:39 PM
I got my bolts from Rock Auto. 93-95 Camaro/Firebird 3.4 manual transmission. Since they're Dorman parts, you can probably get them from your local parts store. I think another brand name is ATI or something like that.

https://www.rockauto.com/en...optionchoice=0-0-0-1

[This message has been edited by fierofool (edited 06-22-2024).]

pmbrunelle JUL 02, 11:37 AM
I installed my flywheel with the Nissan bolts, they appear to work. No road test yet though.
edfiero JUL 02, 12:18 PM
+1 for Dorman
pmbrunelle JUL 02, 01:45 PM
The Dorman 678-154 flywheel bolt that is listed for the 3.4 Camaro has a 7/16-20 thread (according the the description):


The Fiero's threaded crankshaft holes are M10x1.0.

Do you guys have a different Dorman part number in mind, or is the description of the part wrong?
82-T/A [At Work] JUL 02, 04:22 PM
I know you already solved this, but I had an "ah hah" moment with a similar issue. I had an impossible time finding new hub bolts for the Fiero (in the rear). It occurred to me that I was exclusively looking for bolts from an automotive perspective. I then realized that a bolt is a bolt... you just have to make sure that:

1 - It has the exact same (or better) strength rating
2 - It has the same composition as the original
3 - The same size and thread


...and it should work. Biggest thing is that it meets or exceeds the original application. So if you have some of the old bolts, or can see what the requirement is... then make sure whatever you buy has at least the same sheer strength. I was able to find a replacement for basically every bolt I needed on Amazon.

[This message has been edited by 82-T/A [At Work] (edited 07-02-2024).]

CSM842M4 JUL 02, 08:45 PM
If the factory originals are presently only made of unobtanium, I have used Bolt Depot to source any number of oddball fasteners. 82-TA is correct - same or better grade/property class, thread diameter/pitch/handing, and length under head and length of shoulder (if any) are the things to look for. Head style and size can also be factors to watch for. Length of shoulder becomes critical in certain applications; I would imagine flywheel attachment would be one of those. Give BD a look, they've always been real reasonably priced and give good, fast service.
82-T/A [At Work] JUL 02, 09:08 PM

quote
Originally posted by CSM842M4:

If the factory originals are presently only made of unobtanium, I have used Bolt Depot to source any number of oddball fasteners. 82-TA is correct - same or better grade/property class, thread diameter/pitch/handing, and length under head and length of shoulder (if any) are the things to look for. Head style and size can also be factors to watch for. Length of shoulder becomes critical in certain applications; I would imagine flywheel attachment would be one of those. Give BD a look, they've always been real reasonably priced and give good, fast service.




I had never heard of Bolt Depot before... just went to their site, awesome! They have everything!
CSM842M4 JUL 02, 09:35 PM
They have stuff I had never heard of before. And some of my all-time favorites - sex bolts! Okay, seriously, yeah, they have come through for me on a mess of off-the-wall projects. They're kinda my go-to if I don't have to have it yesterday.