No, the 455 is an 8 cylinder, with 2 banks of 4 cylinders, so it would be the length of 4 cylinders, right?

You're going to love that conversion. I have a 455 in my Firebird and they are wonderfully torquey motors. That WOULD be a great truck motor.


52 GMC 3/4 ton pickup
68 Big Block Vette
68 455 Firebird