New 350 build leaking

**tayto** · 2 Weeks Ago

did you put thread sealant on all the headbolts? they all go into coolant...

**Fast355** · 2 Weeks Ago

Originally Posted by tayto

did you put thread sealant on all the headbolts? they all go into coolant...

Umm not on the blocks I have. There are multiple blind holes. I always blow the blind holes out to prevent cracking the block.

**tayto** · 2 Weeks Ago

sbc definitely have head bolts that go into coolant. you're right not all but i put sealer on all of them so they torque the same
YMMV but thats what I was taught.

**Fast355** · 1 Week Ago

Originally Posted by tayto

sbc definitely have head bolts that go into coolant. you're right not all but i put sealer on all of them so they torque the same
YMMV but thats what I was taught.

I can understand that but a SBC also used different torque values for the different lenghts of bolts. The newer LT1s and Vortecs are TTY as well despite some claiming TTA. The bolts made in the past decade for those applications all stretch.