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3.70, 3.55, & 4.10 Final Drive Assemblies - (A100)
Price: $0.00

 6 Year, 70,000 Mile Complete Warranty
SHIPPING FROM TWO LOCATIONS, CALIFORNIA AND OHIO TO SAVE TIME AND FREIGHT CHARGES

Over 3000 Units Running; Never a Gear Failure!

These gears fit Oldsmobile Toronado and Cadillac Eldorado 1965-1978
Units are heat treated and certified; material is SAE 8620
If you are pulling a car it is a must to have the 3.55, 3.70, 4.10 gear ratios
Maximum torque is achieved at 2,500-3,000 RPM
These gears will help hold your coach from coasting down hills and save braking on long grades
These gears allow those with a 403 CID engine the ability to keep up with a 455.

We pay for freight, reasonable labor charges and return freight for items under warranty.  Our warranty is 6 years or 80,000 miles!  No one else offers this strong and simple of a warranty!   (On limited slip units the limited slip unit is covered for 2  years or 24,000 miles. 

 
 

ENGINE RPM at ROAD SPEED

GEAR TEETH

Final Ratio

RPM at

RPM at

RPM at

RPM at

RPM at

RPM at

Pinion

Ring

50MPH

55MPH

60MP

65MPH

70MH

75MP

Gear

Gear

Original

3.07

1900

2090

2280

2470

2660

2850

14

43

 

3.42

2125

2350

2550

2760

2980

3150

12

41

 

3.55

2200

2420

2640

2860

3080

3300

11

39

 

3.66

2274

2500

2730

2955

3183

3412

-

-

 

3.7

2300

2530

2760

2990

3220

3450

10

37

 

4.1

2500

2750

3000

3250

3500

3750

-

-

Above figures were derived from various methods. Tires: 8.75 x 16.5 or 225/75 x 16

 

 

FAQs:
Will my gas milage suffer?


Overall driving average would result in same milage or better than before since the distributor vacuum advance will advance more and carburetor will deliver leaner mixture.

Why should I purchase the 3.55 and not the 3.42?
If you are going to get the most for your money, the 3.55 gives you better performance. GMC also had a 3.54 ratio on the drawing board. 3.42 ratio is a standard ratio for General Motors. Yes, you can put lower ratio in the original case than the 3.42. Our 3.55 is a 3.5454 ratio. 3.42 ratio when used with 16" rim will generally not perform better than 3.55. Only the 3.55 and 3.70 have the full 4-year warranty.

Are the teeth on the 3.55/3.70 thinner?
Our gears are as thick as our competitor and backed up by 6-year, 70,000 mile warranty.

Isn't the 3.50 ratio less expensive?
No, by the time you drop the transmission and work on the transmission, the labor cost has driven the overall cash outlay higher. Also the gear reduction is done by speeding up the 1/2 of the transmission which causes more stress on the clutch pack. Temperature of the transmission does not drop as much as those with 3.55/3.70.

Why not the 3.66? 

Cost for the additional final drive of 3.21 will cause a cash outlay of over $700.00 for the unit and the special output shaft.

NOTE ON SHIPPING:  THE FINAL DRIVE UNITS  can be shipped from a facility in Ohio to save freight and core return – Please call us for details!

 

Quantity:
Applied GMC MH - 38424 Cedar Blvd Newark, CA 94560
Phone: 800-752-7502 Fax: 510-742-1118 Email: mail@appliedairfilters.com