I am in the 12 second range right now with my baby..Few weeks ago I ran a 12.47 @ 109 mph. I have stock suspension with the exception to the rear end🙂 I have a 12 bolt rear from a '69 Checelle with 4.10 gears, UMI Perfropmance 12 bolt swap kit...I have cargo coils in the rear and the front springs are prolly as old as the car is. I also have a driveshaft loop as it's needed for my speed. Anything faster then 11.40 nand you need a cage.....Then again, that 12 bolt rear didn't getr me there, the 10 bolt would do the same as well...Nect year I'm going with Moroso trick springs on all 4 crns and 90/10 shocks in the front and 60/40 rears, this should help out a bunch!!
My motor is a sbc that is bored/stroked to 388 ci with 10.1 pump friendly compression....Dart pro-1 200 cc alum. heads with the eddy air gap intake, performer rpm (488-510 lift) cam and a holley 750 dp. I have a 700-r4 transmission with a 3200 converter...MInd you my car weighs 3300 lbs and with me in it were at 3550 or so!!! I drive my car to the track and then drive it home....But I gotta tell you that you won't be happy...Once you get into the 12's, your gonna want the 11's 🙂