Well my bad, thank you for welcoming me to this forum. The great ratio is 323. The engine is a 4 barrel carb, dual exhaust, that's all I know about it. The power steering was just put on, power brakes are going on now, but I had to go from 14" to 15 tires, which I'm also having to change the axels. It has a 727 trans, and 323 rear. Hope that helps, if you need anything else let me know