The motor in my boat is a rebuild. I got it real quick and cheep. I dont know anything about it. Just thats its 2 carbs (found out yesterday they are 750's) High rise, Tunnel ram, 460, rebuild. Reps show short block exhange for just over $500. Two valves repaired. No other info. I found a number on my heads. Its "20439" Anybody know what that means? Under the valve cover it says "DOOE-R" Whats that? I have a pic of the valve train, Can you tell what valve was cahnged?? http://www.***boat.com/image_center/...hp?photo=16248
Any comments on this? Whats the diffrence in the rockers?