Kinda depends on the weight of the car, i've run both a tunnel ram with 2 660 ctr. squirters and an 850. the tunnel ram was a little better on top end but suffered on the bottom end. I've ran .595 flat tappet cam to .660 lift roller cam. The one i liked best is .630/.630 roller all the cams have 106 lobe seperation installed at 102. All the cars weighed over 3,000lbs and run from 10.30 to 10.60 qtr. mi. By the way i run 5.43 gears in the Malibu so it goes over 7,000 every pass in the 1/4mi.
JMO
Zip.