6th Gear Poster
Join Date: Jun 2003
Location: spring grove, il
Don't Fear the Gear
I just finished swapping my 3.73s for 4.30s (and forced lube mod) and HIGHLY recommend them. I haven't gotten on it yet (break-in), but the car is a lot snappier. Anyone that has a dohc motor should forget about 3.55s, 3.73s, or even 4.10s. The 3.55s and 3.73s are a waste of time and money. Period.
I don't have the coin for a speed-cal at the moment (had the gears in my closet for almost a year, at the time i was turning wrenches and now college=no money), so I just threw in a 23 tooth gear. My speedo is off a little, but nothing that isn't tolerable, in the meantime it should keep me from speeding. I'm going to get a speed-cal in about a month, and am banking on the 23 tooth gear lasting that long.
So far I have had no whining whatsoever which is more than I can say for my old set of used 3.73s (slight whine at 40-45). I took a quick spin with the car and at 60mph (as indicated by the speedo, probably actually around 57mph give or take) i'm only turning about 2400 rpms. In my opinion this is totally liveable and streetable. I would not hesitate to road trip this car as 90mph highway blasts will get you tickets anyway.
I would love to chuck my stock mark 8 converter, but that's not in the near future (tuition money). I like to think of my current trans as a 'fill-in' until I graduate and throw in a T-56 anyway (4.30s may have to be changed again, haven't really looked into that aspect yet). In closing, DON'T FEAR THE GEAR, now I wish I would have put on my big boy pants and went straight for the 4.56s
lowered, koni sport adjustables, 4.30 tl in aluminum housing, mark 8 trans, j-mod, 93 mark viii ds, antenna hole=gone, kooks headers 1.75" primaries, 2.5" catless duals, midmount magnaflow, 96-97 sport wheels with 255/50/16 sumitomo HTR Zs, optima in the trunk, new motor...94 mark 6/6/08