Flexplate/converter bolts
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Flexplate/converter bolts
My 454 flexplate is drilled for 7/16 bolts and my coan converter is 3/8. I am using 3/8-24 grade 8 bolts with washers and stover c nuts. Is this ok or should the converter be drilled for 7/16? I’d really hate to take it all back apart.
Re: Flexplate/converter bolts
I got some tube n had a friend with a band saw cut me some thin size adapters for the bolts when I had the same for a sbc. Small things like that bug me.
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I know as much as I can learn and try to keep an open mind to anything!
If I didn't overthink stuff I wouldn't be on speedtalk!
Re: Flexplate/converter bolts
To answer your question: No.
You will have plenty of opportunity to get the right flex plate or drill out the convertor mounts to 7/16 after the current bolts loosen up and auger out the flex plate.
You will have plenty of opportunity to get the right flex plate or drill out the convertor mounts to 7/16 after the current bolts loosen up and auger out the flex plate.
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Re: Flexplate/converter bolts
I think it would depend on how much torque your engine makes. If it is just a slightly over stock, no problem, if it is making 500 ft. lbs or more, I would say go to 7/16.
Most performance converters have 7/16 bolts. My experience is that many years ago when I ran a performance converter with 3/8 bolts they had a tendency to loosen up over time. When I had the converter freshened, I had them drill it to 7/16 bolts and they never came loose again. Back when they made converters out of stock cores some had 3/8 bolts, have not seen one for years that had anything smaller than 7/16.
Most performance converters have 7/16 bolts. My experience is that many years ago when I ran a performance converter with 3/8 bolts they had a tendency to loosen up over time. When I had the converter freshened, I had them drill it to 7/16 bolts and they never came loose again. Back when they made converters out of stock cores some had 3/8 bolts, have not seen one for years that had anything smaller than 7/16.