New Rear Differential Cover Bolts?

[Merc1973]

Im looking and can't seem to find new Diff cover bolts. I have a new diff cover and the old bolts look too crusty to save. Anyone have a link? Pictoral diagrams dont show them. Are they Metric or SAE?

Will these ARP bolts work?
https://www.summitracing.com/parts/ARP-437-3001/

 

[Tonyrodz]

Im looking and can't seem to find new Diff cover bolts. I have a new diff cover and the old bolts look too crusty to save. Anyone have a link? Pictoral diagrams dont show them. Are they Metric or SAE?

Will these ARP bolts work?
https://www.summitracing.com/parts/ARP-437-3001/

Not sure about those bolts, but the diff bolts are metric.

 

[swathdiver]

Apple cider vinegar. I think they're 8mm bolts, 16 or 21 mm long depending on year. Have a thread gauge?

 

[Merc1973]

Not sure about those bolts, but the diff bolts are metric.

Thanks. According to an Amazon review we need: M8 X 1.25 X 20mm bolts There are some ARP on Jegs but pricey.

I may get these Dorman 10.9 grade bolts:
https://www.summitracing.com/parts/rnb-459-420

 

[BIGFOOTDUDE1]

I BOUGHT A COVER FROM 4WHEELPARTS AND SAW THEY HAD THE BOLTS ALSO. AND EBAY. GOOD LUCK

 

[Rocket Man]

You need to check threads. Some of ours are SAE and some are metric. I took one of mine to Ace Hardware and matched it up.

 

[sumo]

My Pml diff cover came with Allen heads. They are 8mm x1.25 x 21mm

 

[corvette744]

You need to check threads. Some of ours are SAE and some are metric. I took one of mine to Ace Hardware and matched it up.

Exactly what i was going to say and did......

 

[Rocket Man]

My Pml diff cover came with Allen heads. They are 8mm x1.25 x 21mm

View attachment 198262

You didn't put a girdle on yours with all that power you're making? I went with the TA performance.

 

[Tonyrodz]

You didn't put a girdle on yours with all that power you're making? I went with the TA performance.

TA performance is pretty good. They make/made alot of go fast goodies for the older Buicks.