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slickster
05-28-2010, 05:52 PM
how much did your rpm's rise after you put 410's in. im thinking about it but affraid i'll be buzing high rpm's at 80mph
BAD MERC
05-28-2010, 05:57 PM
About 500 rpm. The difference is positive in every way for me.
fastblackmerc
05-28-2010, 06:13 PM
About 500 rpm. The difference is positive in every way for me.

200RPM increase after the 4.10's were installed.

I cruise at 80 all day long with no problems.
SpartaPerformance
05-28-2010, 06:15 PM
Rule of thumb is about 250rpm per gear step, so if you have 3.55's next is 3.73 then 4.10 so 500rpm. Go for it, it makes a huge difference and the MPG loss is not noticeable.
babbage
05-28-2010, 06:25 PM
how much did your rpm's rise after you put 410's in. im thinking about it but affraid i'll be buzing high rpm's at 80mph


I'm at 2500 RPM @ 80 with 3.73's - So figure about 2750 with 4.10's.

You'll need a better driveshaft if you go over 100 often.

If you do go with new gears, its a good time to replace axles, seals, and bearings.
SC Cheesehead
05-28-2010, 07:58 PM
Did you find a Marauder yet?
slickster
05-28-2010, 08:39 PM
Did you find a Marauder yet?
well i got 8500 so im looking for one with around 80k miles. when that happends its a done deal. the one in charlotte on cl had that mileage and he sold it for 8500 i forgot about cause he was asking 10.500 for it if i knew that that whould of been a done deal also