Vintage Edelbrock head torque specs?

[drfromnc]

I’ve got a fresh built 59a flathead with some vintage Edelbrock heads that after driving 500 miles since it’s been on the road has started to seep coolant from 4 or 5 studs total (some seep on right side, some on left side).

This just started as low temps here in NC at night dropped to near or at freezing. No seepage of coolant while driving but does a little at startup.

After the first time it happened, I let it cool down overnight and then checked all nuts with torque wrench at 35 ft lbs, then 40 but the same studs are still seeping a bit.

Should retorque to 45 ft lbs or ?

I’ve read some posts about removing coolant and use water and it will seal itself after a few runs or use some stop leak?

 

[petehoovie]

I’ve got a fresh built 59a flathead with some vintage Edelbrock heads that after driving 500 miles since it’s been on the road has started to seep coolant from 4 or 5 studs total (some seep on right side, some on left side).

This just started as low temps here in NC at night dropped to near or at freezing. No seepage of coolant while driving but does a little at startup.

After the first time it happened, I let it cool down overnight and then checked all nuts with torque wrench at 35 ft lbs, then 40 but the same studs are still seeping a bit.

Should retorque to 45 ft lbs or ?

I’ve read some posts about removing coolant and use water and it will seal itself after a few runs or use some stop leak?

 

[Bored&Stroked]

You should always retorque after a couple heat cycles . . . 45 is what I use. BUT this coolant leakage will NOT be solved by torque as it is water leaking past the coarse threads of the studs.

Usually, the stud threads will just get "crudded up" and it may stop, or you can do what I do and put in a can of ceramic seal . . . following the instructions exactly as they say.

I use the Moroso product - purchasing it from Jegs. I do this on every flathead build. If the engine has been pinned or has one or more sleeves, then I do the whole process twice. (Good insurance!).

PS: Very nice looking set of block-letter Edelbrocks! You can always tell the original ones from the newer ones - they're just a lot cleaner/smoother looking.