[stal94gt]

Originally Posted by cedsks I would go with the 3.73s, IMO, cheaper, easier to resell if u need less gearing right? Tested true, most S/C stangs putting down alot of power still go with 3.73, from what I have seen on here. Good luck, i know what it is like when parts start coming, I spent a good month debating in my head between 3.73 and 4.10 so I compromised with the 3.90.

i have seen alot of stock motor sc stangs with about 400 rwhp pull 117-118 traps with 3.73's and my car pulls 126-128 in 4th with 3.73's so that does not give me a whole lot of head room for the track considering i make an extra 150 hp over a stock motor sc stang. 3.55's should get me around 138-140 mph which is plenty of head room considering later on i will be making over 600 to the ground once my setup is done. thats not to mention i wont even try to run my car at the track on street tires so it should help my short game out even with the 3.55's in

[cedsks]

Originally Posted by stal94gt i have seen alot of stock motor sc stangs with about 400 rwhp pull 117-118 traps with 3.73's and my car pulls 126-128 in 4th with 3.73's so that does not give me a whole lot of head room for the track considering i make an extra 150 hp over a stock motor sc stang. 3.55's should get me around 138-140 mph which is plenty of head room considering later on i will be making over 600 to the ground once my setup is done. thats not to mention i wont even try to run my car at the track on street tires so it should help my short game out even with the 3.55's in

so ur shooting for 550-600rwhp? Didnt know that, yea 3.55 would be a good gear....

[stal94gt]

Originally Posted by cedsks so ur shooting for 550-600rwhp? Didnt know that, yea 3.55 would be a good gear....

i make mid 500's now with stock cams. im hoping to hit close to 600 with a set of mhs 2.5 cams.

[02gtmustang]

Buddy of mine traps 130 at 10.8 with 3.73's and 28 ete street bias ply's... Hes working on his 60 or hed be in mid -low 10's

[stal94gt]

Originally Posted by 02gtmustang Buddy of mine traps 130 at 10.8 with 3.73's and 28 ete street bias ply's... Hes working on his 60 or hed be in mid -low 10's

he probably pulls a lot more rpm's than i do. i still run stock cams so im limited to 6500 rpm max

[02gtmustang]

Im not sure what he revs to i know tge 28's help him but he doesnt rev it too too high its a 5.4 with stage 3 cams and a 2.3 whipple

[Morelman]

Originally Posted by stal94gt thought this would be funny but wondered what kind of top speed people are getting out of 3.55 gears. im sure there is a calculator some where but i have no clue where. i dont go to the track much and i could give a crap about gas mileage, i just feel i would enjoy longer gear time. i have 3.73's in my car now and im not to happy with how short each gear is at wot. i have just ordered my detroit locker, 31 spline axles, and full rear end re build kit. i need to order my gears and the choice between the 3.55's vs 3.73's is slowing me down

sounds like you already answered your own question.

IMO if your unhappy with your current setup then try the 3.55's out.