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I’m having a hard time finding two parts. I mentioned in a post back in April that I needed the timing marks tab for my ‘76 350 build. There were two recommendations and I tried to contact both of them by text and email with no reply. I still cannot find it searching nationwide.
Secondly, I need the harmonic balancer bolt. I believe it is a 3/4-16x1.5”. I found a used one on eBay for &23.00 with shipping but I would like to have the option of a new one.
As always, any help is appreciated.
Vance
Thank you, Joe. Actually, this one is the only one I could find. It seems like this guy has a corner on the market. I made him an offer so we’ll see what happens.
As far as the balancer bolt goes, the used one on eBay seems to be the only one in existence. I’m going to the machine shop that did the work on my engine to see if they have a thread chaser that fits.
I had to replace the harmonic balancer bolt on my 71 350. I looked thru some mopar parts I had and found the bolt from a Chrysler 383 was exactly the same. I used it. This led me to believe that a lot of those bolts are the same, could be wrong but I think it should be easy to get a new one....
Why didn’t I think of this sooner?! The local Fastenal has 3/4-16x1.5” grade 8 bolts for $3.00. Any reason these won’t work?
Fastenal is $20 cheaper than Ebay (Post # 1). The bolt I would use would come from Fastenal, Grainger or McMaster-Carr. Buy two of them and you have a spare. Do you need a washer ?
Why didn’t I think of this sooner?! The local Fastenal has 3/4-16x1.5” grade 8 bolts for $3.00. Any reason these won’t work?
Pretty sure that is what the Olds Rocket Parts bolt is with a double thick washer. Finding a bolt like that up here, not so easy in fine thread, good thing I have extras.
Fastenal is $20 cheaper than Ebay (Post # 1). The bolt I would use would come from Fastenal, Grainger or McMaster-Carr. Buy two of them and you have a spare. Do you need a washer ?
The old bolt was galled pretty bad but the washer is pretty much indestructible. The crankshaft was needing to be turned .040 so I scrapped it. The reconditioned crank, with shipping, was $450 so I didn’t want to ruin it with the old bolt. That crank is another rare part. Crankshaft Supply, Inc (CSI) in Minneapolis was the only place I could find one and I got the last one.
You would have been better off having yours reground as long as .040 bearings are available. Quality on most crankshaft kits is terrible. Make sure and check every single journal for size and taper etc. Same with the stroke. I would not send your core back until you are absolutely certain that the one you bought is usable.
You would have been better off having yours reground as long as .040 bearings are available. Quality on most crankshaft kits is terrible. Make sure and check every single journal for size and taper etc. Same with the stroke. I would not send your core back until you are absolutely certain that the one you bought is usable.
CSI didn’t even want the core since it was in such bad shape. Would my reground crank by O’reilly’s machine shop have been any better than the one from CSI which was only turned.010?
CSI didn’t even want the core since it was in such bad shape. Would my reground crank by O’reilly’s machine shop have been any better than the one from CSI which was only turned.010?
Depends on how good of a job they did on the crank kit. A lot of crank kit cranks have had a journal or two welded up to be able to turn them. Like I said, check all of the sizes and the stroke and make your decision
The fact that yours would have been .040" undersize is not a factor as long as bearings are available. Guys turn cranks down .100" or more to go with different rods or change the stroke all of the time.
I would rather have my local crankshaft guy grind a crankshaft any day compared to buying a crank kit. But I also know that he does an excellent job.
The .040" bearings can be hard to source. Hopefully it is ground correctly. Either crank would be similar, as long as they are properly machined. You might get a stronger N crank in place of the weaker lightweight crank that came in mid 70's Olds V8's.
