i found a set of 4.11's for my 9 bolt and is there reason why i shouldn't get them?? i plan on mainly doing suspension mods to my car (sub frame connectors, strut tower brace, urethane bushings, lowering spring, agx shocks, ect) the only engine mods will be exhaust a mild cam, performance ignition and a more free flowing air filter setup.

is 4.11 to low? i mainly want them for freeway pulls but also occasional weekends at the strip/autoX

 

You might be running out of RPMs at the top end of the 1/4 mile. I have 4.11's in the '57, 27" tall DOT slicks, 4000 RPM stall, it goes through the traps at 6000 RPMS @ 106 MPH.

 

according to a speed calculator i found i could do about 130mph in overdrive

 

Is the transmission setup for WOT shifts into overdrive?

 

yes it is it was rebuilt less then a year ago and it goes in to OD at WOT right at redline but acceleration is really slow in OD i know power would help too but i still feel like i need lower gears