AdamR
Big Member
Does anyone know what size bolts I need to bolt the flex plate to the crank on my 340 ? I have the converter bolts but forgot all about the flex plate. Are they 7/16" -20, .500" long ? :scratch:
SB flex plate bolts
- Thread starter AdamR
- Start date
-
Guitar Jones
aka Angry Johnny
I don't know off hand, I could probably find out but they are special bolts. The heads are thinner than standard bolts of that size would be, same with the flex plate to converter bolts.
AdamR
Big Member
Wonder if the converter bolts will work ? I'll give them a shot.
Guitar Jones
aka Angry Johnny
The service manual doesn't list the size of the bolts, I'd say go to a dealer and get them.
Guitar Jones
aka Angry Johnny
They could damage the converter or the block if clearance isn't sufficient.
AdamR
Big Member
I always forget about the dealer. I'll try them in the morning.
Guitar Jones
aka Angry Johnny
The race converters use the same thread and size as the flex plate to crank bolts (and they are 7/16 fine thread grade 8 bolts), but the heads are even thinner. I've ground the heads down on flex plate to crank bolts to use for converter bolts before.
It's really time consuming though and can be dangerous if you don't have a way to properly hold the bolts so I don't suggest doing it this way. If you do, you do so at your own risk.
It's really time consuming though and can be dangerous if you don't have a way to properly hold the bolts so I don't suggest doing it this way. If you do, you do so at your own risk.
AdamR
Big Member
I'll just wait and pick some up in the morning. No reason to rush now. Thanks G.J.
-
