[moliva1568]

i went to carquest to get a timing chain set for pontiac 7.5L 455 (catalina). they wanted $121 for the set, chain and gears. i knew this sounded weird so i declined. on the rock auto website they have sets starting at $22. summit has them starting at like $35. i don't need a performance type set. just a plain one which will last a good amount of time. i see some state "original true roller" and have different types of sprocket material. some say heavy duty and others say double roller. how do i choose? keep in mind that i'm no mechanic so i need something that i won't have to worry about other than at mileage interval checks. also, rock auto has my engine as W or Y. the 5th vin # is a y. should i look under Y parts? what does it matter.

thank you