Basic story .... 14 track pack .... after a few years CJ FBO I went with a Vortech V3 (3.6) return fuel , 1050x injectors , twin pumps e85 full time always for years (3.31s out back) ... etc etc ... blew up my mt82 (rxt ) a month ago ... went with a Magnum XL (rxt) 2.66 ratio and went 4.10s out back .... I did my math before ordering the kit from JPC and while i knew everything would be a little longer I did not anticipate how it would actually feel .
Feels like the car now is pulling teeth before it gets going , car has plenty of power (695/565) but it feels like a pig and I am 100% sure last months car was faster than today's car.
I re did the math and this time I said screw it I want it to be as close to MT82/3.31 as possible .... and 4.56 and the 2.66 make the combined ratio of 1-4 almost identical in both mt82/3.31 and 2.66/4.56 scenarios .
the question is , is there any mechanical adverse effect of running 4.56 on a daily ... not an expert on rear ends , not sure if the temps go up and the diff needs more cooling with steeper gears .... that is my ONLY concern ... mileage the car has a 6th with .50 ratio so even with my 27.44 tall drag radial daily tires it would still do 65 mph at 1800 RPM with 4.56s ...so that is just fine .
Let me know your opinion please. thanks ( I do realize now I should have done 2.97 and 4.10 and it would have been better than 2.66 and 4.10 ... but 2.66 and 4.56 is still a better combo than both so if I can get away with it win win for me )
Feels like the car now is pulling teeth before it gets going , car has plenty of power (695/565) but it feels like a pig and I am 100% sure last months car was faster than today's car.
I re did the math and this time I said screw it I want it to be as close to MT82/3.31 as possible .... and 4.56 and the 2.66 make the combined ratio of 1-4 almost identical in both mt82/3.31 and 2.66/4.56 scenarios .
the question is , is there any mechanical adverse effect of running 4.56 on a daily ... not an expert on rear ends , not sure if the temps go up and the diff needs more cooling with steeper gears .... that is my ONLY concern ... mileage the car has a 6th with .50 ratio so even with my 27.44 tall drag radial daily tires it would still do 65 mph at 1800 RPM with 4.56s ...so that is just fine .
Let me know your opinion please. thanks ( I do realize now I should have done 2.97 and 4.10 and it would have been better than 2.66 and 4.10 ... but 2.66 and 4.56 is still a better combo than both so if I can get away with it win win for me )
Last edited: