Which gears are for me: PRO50 3.73's or 3.90's????

[Dan95-5.0]

i know a guy who has 2 brand new sets of PRO50 gears. one is 3.73's and the other is 3.90's. either way i'm going to get a set off him.

which gears would be better for me?

i dont do alot of highway, but enough not to want the 4.10's

i'm leaning towards 3.90's because its a happy medium between 3.73's and 4.10's

any opinions on Pro50 gears by the way?

mods are in the sig plus i'm getting a crane 2031 cam and looking for a blower the following year.

thanks

 

[mo_dingo]

neither, get some FMS gears for 150 shipped from www.gefracing.com . It makes the install a million times easier and you won't regret it.

Also, go w/ 4.10's, I wish I did.
Scott

 

[Zero Signal]

Have a dyno sheet? You can calculate it, but it's complicated.

 

[95COBRA241]

I'd say the 3.73's would work better with the blower than the 3.90's or 4.10's.

 

[GRGT1994]

With a blower, you should be thinking 3.55 or 3.73.

And get new Ford gears. There is no reason to use anything different, and the benefits of the Ford gears far far outweigh and few bucks you might save.

Forget about 3.90's, they are completely meaningless unless you are building a bracket racer and your setup happens to call for that precise gearing. Otherwise, there is sooooooooo little difference between a 3.90 gear and either way (3.73 or 4.10). You would have a hard enough time telling the difference between 3.73 and 4.10 in SOTP feel. 3.90's are a red herring.

 

[94-302-vert]

I don't see a blower in your sig. So I would say the 3.90's, but would also recomned getting new FMS gears for the install reasons.

 

[GRGT1994]

I don't see a blower in your sig.

looking for a blower the following year

BTW, Ford does not make 3.90's.