info on mods for 97 GT

[EXAM1999]

3.73s work fine for that automatic because it is technically an AODE-W or 4R70W with a 2.84 1st gear & 1.56 2nd. The AOD & AODEs had a 2.40 1st and 1.47 2nd so 4.10s were necessary to get it to move. A converter, shift kit, cooler & 3.73s will make that car fly off the line and not run that high on the highway because of the .70 O/D gear. The 5 speed has a .67 5th so there isn't that much difference. At 60 mph, my car shows about 2100 rpms and at 75 mph I see about 2600 rpms

------------------
EXAM1999
99 Silver GT
4R70W, Borla Cat-Back, 10.5 ProTorque custom converter, cooler & Transgo Shift kit, Synthetics, Bassani X-Pipe, V2 S-trim, 3.73 gears, FMS 70 mm T/body, FMS Shorty headers, Wolfe Racecraft Adj. upper & lower control arms & ROH ZR6 wheels(17X9.5 & 17X8.5 w/Nitto Extremes)
Dyno 2/25/00
Best:
316 rwhp
332 rwtq
Dyno 3/26/00 After fuel mod, FMS headers & Pro Torque Converter.
338 rwhp
342 rwtq