Robert Butler

C3 Mechanics,

I need your professional input . What size socket is the exact fit needed to remove the three bolts holding the stock steel pad that holds the rear leaf spring to the aluminum bat wing on a 1980 Corvette ?

Thank you Forum members for being a great resource for all of us learning about these iconic cars.

Robert

0Willcox Corvette

The three bolt heads are a M12 (metric) head bolt, the two larger ones are m12x 1.75 x 90 and the smaller one is m12 x 1.75 x 30.

They torqued... with the car sitting on the ground at 55-75 ft pounds. Never... Ever torque the spring with the wheels off the ground. You can snug the bolts but torque it with the car under full load.

Willcox

Website https://willcoxcorvette.com/
Tech Page http://repairs.willcoxcorvette.com/

Please bump our sale threads if you get a chance..

derekderek

Hi. Bolt heads or threads? GM used 18mm heads on some larger bolts. So if 3/4 and 19 are loose and 17 and 11/16 too small. That will be the culprit...

Antz81

I think he means heads, Which are 18mm on these bolts.