Re: I need opinions on sealing head bolt threads
Old school inmdian head shellack work just fine for sealing head bolts or any bolts that need to seal off coolant and or oil.
I have also used ARP's white teflon thread sealant with good results last time i rblt my 396 in 2001/7k miles ago .
Buti have read here in t/c where others had coolant leaks using teflon paste.
But i have a feeling that may happen if the threads in the block and or on the bolts aren't cleaned properly with a solvent like brakleen/carb cleaner etc to remove all oil/grease/maching oil etc prior to reassembly.
1969 CHEVELLE SS396,ORIGINAL #'S MATCH,GOT IN 1978,(In 2001 rblt/bored original 396 .030 to 402)/M20/12BOLT/3:31'S
2006 YAMAHA 1700 ROADSTAR SILVERADO (1 owner ,GOT in 2009,4,700 miles/WK end fun)
1977 KAWASAKI KZ1000 (AM ORIGINAL OWNER ,GOT IN 1977,NOW has 29k miles/WK end fun)
2002 MAXIMA (DAILY DRIVER/1 owner,GOT 3/2013 w-44k miles)