I have an 89lx 5.0 automatic. It has Mac shorty headers, Mac o/r H-pipe, Mac Cat-back, Mac cai, MSD cap/rotor/coil, FRPP 9mm wires and 3:73s and I ran a 14.6 at englishtown about 2 months ago with a humid 85 degree track temp. Since then I put on a 76mm mass air flow meter and smog pump eliminator bracket so the smog pump is off, using less power and taking off weight. With cooler weather now and the few things I changed since the 14.6, what do you think my time will be now? Thanks

 

No guess on the time but welcome to the forums.

 

Try the 5.0 section

 

Welcome!