GASKET SET FOR 1977 to 1980 ATC90's AND ATC110'S
 
WILL NOT WORK FOR THE 1981 THROUGH 1985 AT ALL SORRY...
 
THIS SET WOULD WORK FOR ALL ATC90'S BUT IT DON'T HAVE THE CORRECT COPPER HEAD GASKET FOR THE EARLY ATC90'S. AKA FRAME NUMBERS LOWER THAN 1113935 IF YOU MUST HAVE ONE SEE THIS LINK 358X TOP END GASKET SET     
 
OR BETTER YET ANNEAL YOUR OLD COPPER GASKET SEE THE LINK BELOW
 
Annealing a Copper Gasket
 
MAKE SURE  YOU SEE A RAINBOW OF COLORS OVER THE COMPLETE SURFACE THEN AIR OR WATER COOL IT AND AWAY YOU GO. THIS OPENS THE PORES AND SOFTENS THE COPPER.