Bolts

[steve from staten island]

727 trans, flex plate to torque converter. I had these bolts in a bag labeled as what came out when i took the engine/trans out. They are 5/16 have slots cut into the head and there were four in the bag. Maybe i screwed up, God only knows but the new converter takes a 5/16 SAE bolt and it would seem 3/4 inch is long enough. Can i use a grade eight SAE? Should i use a lock washer and or a flat washer or should i order new bolts specifically designed for the converter? Thanks for your advise.

 

[68sportsatelliteragtop]

The bolts that hold the converter to the flex plate, IIRC, aren't as thick on the heads as regular bolts. I think that is for additional clearance to the block. Don't put washers under them, use locktight and torque to spec.....

Here is a pic from my 383 the heads are grooved, like you said, and they are a larger size than usual 5/16 bolts. The head is not as thick as typical 5/16 bolts....