Pontiac Solstice Forum banner

1 - 2 of 2 Posts

·
Registered
Joined
·
848 Posts
Discussion Starter #1
I did a little searching and have not found anything, just would like the gear ratios of the manuals and autos, GXP if that matters, not NA.
 

·
Registered
Joined
·
848 Posts
Discussion Starter #2 (Edited)
Some further searching on the auto tranny yielded this from Wiki:

5L40-E

The 5L40-E was designated in either "M82" (rear-wheel drive) or "MX5" (all-wheel drive) versions for service in BMW vehicles from 2000 model year until the design was superseded by (for BMW) the 6L45E and (for all others) the 6L50E series electronic automatic transmissions in 2007 . It is designed for service in vehicles up to 4000 lb (1814 kg) GVWR and in service was mated to a selection of final drive ratios 3.42:1, 3.73:1, or 3.91:1 depending on the carline. The 5L40-E had been designed for 1.8–3.6 L engines with a maximum of 250 ft·lbf (340 N·m) of torque. A notable failure mode of the assembly is lifetime overtorque in the heaviest carlines wherein the unit is matched with a significantly higher torque-rated powerplant; the transmission is well known for failing between 150,000 km and 200,000 km in the 5 series E39 and X5 BMW'S equipped with their inline 6-cylinder and V-8 powerplants, due to insufficient or contaminated lubrication during operation in cruise overdrive range, and service loads beyond the engineered maximum rating of the unit. Despite this apparent mismatch, and since carmaker BMW does not manufacture the extremely sophisticated 5L40E, BMW customers have reported that Authorized BMW Service will not repair this type of transmission, instead offering to install fully assembled units as replacement (a common practice which entails significant cost to the consumer.)[citation needed] An aftermarket preventive package exists to curtail early failures but is designed to alleviate very specific symptoms and generally is not a prescribed remedy for a manufacturer mismatch.

Gear ratios:
1 2 3 4 5 R
3.42 2.21 1.60 1.00 0.75 3.02


As of '07 GM already had a six speed tranny, but I guess they had leftovers they needed to get rid of. French tranny rated for max. 250lb/ft. lovely. the 6L50 can handle 332 lb/ft and 5k of weight, would be nice to have.

Gear ratios:
1 2 3 4 5 6 R
4.06 2.37 1.55 1.16 0.85 0.67 3.20 Now that I look at the 6 speed I'm not sure I'm digging 2 OD gears (6th would be too deep for our small motors that like RPM), I like these gears better:

Comparison to a 2013 Nissan GT-R:
Gear ratios :)1) 1st 4.056 2nd 2.301 3rd 1.595 4th 1.248 5th 1.001 6th 0.796 reverse 3.383
front final drive ratio :)1) 2.937 rear final drive ratio :)1) 3.700
 
1 - 2 of 2 Posts
Top