I tried installing the cooper throttle body heater that came with my motordyne plenum spacers, but while i was attempting to fasten the bolt with a torque wrench i heard a pop. I thought i broke the bold, but after taking it apart again, the bolt seems physically fine. Only the bold that i attempting to tightnen is not holding.

Any idea why this bolt is not holding? What can i do about this? There's no way that i can get away with only 3 bolts fastened correctly?

 

First... you posted this in the classified section. Not were you would get a proper response.

More than likely you over torqued it and stripped the threads in the manifold. You will most likely have a vac leak if you use only 3 bolts.

You will have to re tap the manifold for the next size up.