[FOR SALE] 3:91 complete third member 489 case

[rrvolare]

700.00 ( suggest pick up only )...

Nothing wrong with assembly updated gears and internals .. removed from my vehicle to install 742 case 3:91

 

[HMBCUDA]

700.00 ( suggest pick up only )...

Nothing wrong with assembly updated gears and internals .. removed from my vehicle to install 742 case 3:91

Any reason you went with the 742 case? i was under the inpression the 489's were stronger/better?

 

[Syleng1]

742 is better than 489 which is better than 741.
Pinion diameter I believe where the bearing yoke bearing sits.

If I am wrong- dont shoot the messenger!

 

[mycuda]

489 strongest pinion. But stock cone style suregrip
742 came stock with clutch type sure grip. But smaller pinion shaft

 

[HMBCUDA]

489 strongest pinion. But stock cone style suregrip
742 came stock with clutch type sure grip. But smaller pinion shaft

OK, Got it, Thanks!

 

[B3422w5]

Not enough difference between 89/42 case to spend the money to make a swap to same gear ratio.
Both have about the same strength to last in a race car, neither will get hurt in a typical street ride.

 

[rrvolare]

Mainly for clutch style was reason for swap

 

[jerkyboy]

Mainly for clutch style was reason for swap

This case has a sure grip?

 

[rrvolare]

cone style ... posi 3:91

 

[Jadaharabi]

489 strongest pinion. But stock cone style suregrip
742 came stock with clutch type sure grip. But smaller pinion shaft

Although the 489 is a 1 7/8 pinion and the 742 is 1 3/4. The 1 3/4 pinion in the 742 has a larger inner pinion bearing for better support.