Just wondering what kind of gears should i be running in my rear end?motor is built 350sb with cam and alot of extras, tranny is 350th 3 speed with 2500 stall

 

Im guessing ..since you live in adrian.....Is your plan to run it at Milan?

If so, I would Probably throw in a ford 9" rear end (pig type) and run 411,or 456 gear.
Since your monte has a 10 bolt standard rear end. (inspection cover) type. (its not really designed to handle a race set up.) So then I would also consider a 12 bolt...swap!

Youd be all set.... But since you havent really said what your goal is as far as what your trying to accomplish with this gear change....

But if your just gonna be messing around on the streets Id say a 355, depending on what rpms your motor actually spins at...That way you can still run the strip, street and highway....

What also comes into thought as far as what gear to run depends on Lift,duration, rockers, or hydraulic, or solids..Compression, heads,valve size, carburation, etc etc....

Maybe someone else will chime in with some other ideas as well.

 

How high are you going to turn it ?

What tire height?

 

Mostly street??..or strip??..4:56s would shine at the strip but KILL your mileage and driveability on the street...We need a little more info on the intended use of your Monte..thanks..

 

thanks for advice ,it mainly for street but i would like to get timed@the track.i have an 488-509lift 292 duration hydraulic and is an high compression motor(dont know the exact specs right now) bored .60

 

just for some fun on streets but wanna still be able to drive on freeways with no probs to visit family and friends and still attend dream cruise

 

This is an educated guess...

With it bored @ 60 over really doesnt tell me much...what kinda heads? Valves? (size) if say there 202,194's...

I would more than likely for street cruise mode...A strip run for times...
efinately a 355 is the best way to go..IMO...

 

HMMM if knew all specs/info would have said so... was just giving you basics but thx for info ,dont have all info on hand guys who built the motor failed to give me spec list etc,and had to redo things on monte etc long story short had to sue them and prevailed.Monte all together the way she should be except rear end

 

To be safe.then a 355 cant hurt as a rear gear!

 

With the cam specs you listed I assume the engine is built to produce power in the low and mid rpm range. IF the rest of the engine build followed that theme you probably don't want/need to twist it very tight to obtain optimum power and torque. For mostly street use I'd look at gearing right around the 3.73 to 3.90 range.