head bolts on 1999 Chevrolet Blazer

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
When rebuiliding a 4.3 v6 do i need to replace head bolts or use the sameones?
(1) Answer
(1) Comments
cast iron heads to cast iron block, you can re use the bolts.
aluminum heads to cast iron block, the bolts must be replaced.

you have cast iron heads, so it is ok to re use.

That is what I thought but, I bought new bolts and man you have to strech them petty far to get them tight.