(01-24-2013, 12:39 PM)5spd617 Yes it is a .77 fifth. And a 2.88 rearend so I would call it bonneville gears. 5 is only good for over 68 mph. And at about 80 I'm doing 2600 rpm. And last trip I did from Colorado to Northern California I was getting 30+ mpg.
I've got the 2.88 rear as well (thanks again Richard!)... In 4th I am usually about 32-3300 or so, so 2600 would be nice.. right in the powerband to have decent accel as well if necessary! I am still consdering switching over to a 2.67 (IIRC) rear from an early 126, but will likely wait until I do this mod and increase my power a bit to keep up with that gearing... if it even seems necessary at that point...
W123 Mods: 4 speed ** manual climate control ** '85 Kalitucky intake ** manual windows & full tint ** Euro headlights retrofit w/bixenon projectors ** 4 brake light mod ** Vogtland 50mm drop front & Lesjofors S600 drop rear springs ** 16" rims ** late w126 brake spindles, rotors & calipers ** full suspension rehab ** Bilstein HDs ** AL129X alternator & 1/0 starter and charging cables ** 300GD clutch/flywheel ** AFCO 80103N radiator & Earl's 41610 oil cooler ** custom block-off plate, remote oil filter & t-stat ** MW IP w/ tomnik's 6.5mm 'Holly' elements **
S124 Mods: 400E Rear subframe ** SL600 Brakes ** Late 300E 210mm diff ** SLK230 6 speed ** 17" CLK rims ** Vented RF Fender ** Facelift Hood, Headlights, and Lower Cladding **
OBK# 62