i have a 69 gto with the 400. i just finished restoring the car. i put a new distributor in it which is timed around 12 degrees. i had the Q-jet rebuilt. the car starts great, idels great, overall runs great, but when i put my foot to the floor the car sounds like it is being choked or flooded. with my foot to the floor it does this for a couple seconds, then it screams to life and reallyby gumshoe - Pontiac GTO Forum
i just have two quick questions. If i bore a 455 .060" over what is the displacement? and how much hp would be expected from a 455 bored .060 over with 11.6 : 1 CR, edelbrock heads, intake, carb, and a big cam?by gumshoe - Pontiac GTO Forum
i have the same thing, 69 with a 400 and a auto, i just finished putting on a dual 2.5" exhaust system with x-over and SPINTECH mufflers. These mufflers are mean. it ideals real mello but it sounds unreal when you rev it. When accelerating the mufflers sound like it is open headed, they dont drone like flowmaseters. go to spintechmufflers.com they have a video of a 70 gtx(only video oby gumshoe - Pontiac GTO Forum