Mr. Trick

Me and my buddy are going to replace the heads on on his Z28 soon and I need to know what size tap is needed to chase the threads.

Thanks in advance

ZZ

Try here. http://www.small-block-chevy.com/assemblyspec.html

Use a thread chaser instead of a tap.

Mr. Trick

So I need a 7/16 - 14 thread chaser? Thanks for the link!

shoebox

Correct.

GMC5.3

thanks for the replies guys

Also Shbox what size torque wrench do you recommend getting for head gasket swap?

Mr. Trick is my cousin(im the buddy) just a heads up on those wary about me jacking the thread.

Thanks

shoebox

You'll need a 1/2" drive torque wrench.