alot of 454 were pigs gm did there best to really kill them with all the smog crap. a guy i worked for in the early 80s had a doudle dipped in UGLY. 73 suburban babby poop paint color and was about 800.pounds lighter by the rot up to the door handles and the door skins would flap in the wind back door handles rotted off . he hauled cars with it.he did get in to many stop lite races with it hauling a car sometimes . did not get beat much just did some very minor things to it