1971 455 top end
I am rebuilding the top end of a fresh 1971 455. I have a set of SD Performance CNC ported #96 heads. They flow at 260 cfm +
The rest of my combo is a 67 A-body hdtp 2 door. 3:42's out back in an Oldsmobile "O" axle (you know the wanna be 12 bolt with the 10 bolt ring.) I think it is an 8.5. In front of that is a TH400 with a shift kit and a 2500 stall converter.
Exhaust is exited by a set of Dougs D port headers followed by a full 2 1/2" system with Flowmaster 40's in the middle and tail pipes to the end.
Current carb is an awesome 76 800 Q-jet. Runs great. Sits on top of a Performer RPM with a 1" spacer. (yes the hood closes but the torque pushes the air cleaner top to the hood, there is a witness mark)
BFG's all around on Appliance Wheels (old school)
24" tall 60 series
Best run cool night at sea level is 13.041 at 104 mph
I am trying to choose a cam that will best fit street/strip combo.
I am leaning towards a Ram Air IV cam, but cannot decide beteween Melling's, Comps, Crower's or Lunati's. They have all tweaked the original except for Melling.
I am hoping for a low 12's or high 11's after this swap
What do you think?
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