guslopez1964 Posted May 17, 2018 Share Posted May 17, 2018 Hello, I had a question, I been looking for some gearbox bolts for my 64 Buick Riviera (425 Nailhead), but the only place I found was Orginal Parts Group, but they are on backorder. Is there another place folks have seen to get some? Are there other years or Models that would fit my Rivi? Any help welcome, thank you. Link to comment Share on other sites More sharing options...
CTX-SLPR Posted May 18, 2018 Share Posted May 18, 2018 Are you talking about the bolts that hold the transmission to the engine, flexplate to torque converter, or where? Most bolts could be replaced with hardware store Grade 5 or Grade 8. I want to say the transmission to the engine is 7/16-14UNC but I'd have to measure length to quote how long they'd need to be. Link to comment Share on other sites More sharing options...
RivNut Posted May 18, 2018 Share Posted May 18, 2018 All of those bolt dimensions can be found in the chassis manual under the torque settings. 1 Link to comment Share on other sites More sharing options...
guslopez1964 Posted May 18, 2018 Author Share Posted May 18, 2018 I'm looking for the steering gearbox bolts, there are three that i misplaced awhile back Link to comment Share on other sites More sharing options...
guslopez1964 Posted May 18, 2018 Author Share Posted May 18, 2018 I believe I found the dimensions, but now to find who has them Link to comment Share on other sites More sharing options...
RivNut Posted May 18, 2018 Share Posted May 18, 2018 Grade 5 or 8 bolts from your local hardware store will work. Two 3-3/4 inch and one 3 inch bolt torqued to 70 lbs. Link to comment Share on other sites More sharing options...
telriv Posted May 18, 2018 Share Posted May 18, 2018 Larry Daisey-used Link to comment Share on other sites More sharing options...
guslopez1964 Posted May 20, 2018 Author Share Posted May 20, 2018 Okay after much back and forth, I found one bolt that I could use as a sample. The bolts for the power steering gearbox to the body are two 7/16-14- X 3- 3/4" and one 7/16-14 X 3" bolt. I went to my local Orchard Supply Store and they do not carry these bolts, their length jumps from 3 1/2 to 4". The place that has been very helpful is https://alloyboltz.com/ they have gone back and forth looking for this bolt, only thing gonna pay $8 in shipping for one bolt, but hey they carry it. Gonna try one more local place to see if they carry it, if not bite the bullet and order from alloyboltz. I got lucky and ended up finding the 3 original washers for my car. Link to comment Share on other sites More sharing options...
RivNut Posted May 20, 2018 Share Posted May 20, 2018 You might also look at Mr. G's Enterprises. He carries all sorts of automotive fasteners 1 Link to comment Share on other sites More sharing options...
CTX-SLPR Posted May 21, 2018 Share Posted May 21, 2018 McMaster-Carr would also have bolts though they might not have them in a small packages. 1 Link to comment Share on other sites More sharing options...
guslopez1964 Posted May 21, 2018 Author Share Posted May 21, 2018 Looks like Fastenal got them for me at about $4 a bolt and since they are local I don't have to pay shipping cost. ?Fastenal Bolts 1 Link to comment Share on other sites More sharing options...
RivNut Posted May 21, 2018 Share Posted May 21, 2018 You could also cut a 1/4" off of a 4" one. 1 Link to comment Share on other sites More sharing options...
NC1968Riviera Posted May 21, 2018 Share Posted May 21, 2018 From the ROA forum home page! Link to comment Share on other sites More sharing options...
Turbinator Posted July 30, 2018 Share Posted July 30, 2018 On 5/21/2018 at 2:45 PM, RivNut said: You could also cut a 1/4" off of a 4" one. Ed, I make my own fasteners when I’m in a jam and if I can. I use a chaser to clean up the threads and I’m in.....sometimes. Link to comment Share on other sites More sharing options...
RivNut Posted July 30, 2018 Share Posted July 30, 2018 The easiest way to chase threads on a bolt you cut is to first thread a nut on the bolt past the point where you make your cut. Then when you back the nut off the bolt, the nut will chase the threads on the bolt. Easy peasy. 1 Link to comment Share on other sites More sharing options...
Turbinator Posted August 7, 2018 Share Posted August 7, 2018 Ed, makes plenty of sense. thank you! RRB Link to comment Share on other sites More sharing options...
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