4.10 vr 3.73

[roderick]

which rear end gear would be better for a low 11 to high 10 sec car . what would be the difference between mph and 1/4 time . and would they both be streetable.

 

[salvageV6]

3.42 assuming a 109 block turbo Buick motor.

 

[buickfreak]

3.42 there is no such things like changing gears on our cars...it's not a Mustang world we live in

 

[matt87]

yup gotta leave the chevy mentality at home with these cars. the 3.42s are fine even down in the 9's.

 

[turbo nasty]

Stick with the 3.42's for sure !!!!
You wanna tweak the ratio some if the tach is not where u want it going through the traps, then change your tire height 26, 26.5, 27, etc.

 

[D.K.]

I did the 4:11 thing in my 86GN about 7 years ago. It was fun when the car was stock but held it back once I started making power. I quickly went back to the stock 3:42 gears and a taller (28") rear tire.
I would leave it alone and spend the money else where.

 

[V8Killer]

Another vote for 3.42's

 

[87natl]

Who needs more low-end on our cars?

 

[chris]

3.73 and a 28" tire works good.

 

[John Wilde]

I have run both the 3.42, 3.73 and 3.90s.
I would have to say that in most cases you are
better off with the stock 3.42 gearing.

On one of the race cars that I work with we are
stepping down from 3.89 to 3.60 to try and pick
up MPH.

 

[toofastforyou]

3.90's...

I have a good set of 3.90's for sale...: $100 Just to let you know if someone wants a set...
Thahks, 'bye!
Claude