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I have 4.10s for my auto and they are bad ass.. though please keep in mind that they are very aggressive and the highway RPMs are pretty silly (2500@60ish), but for acceleration , they are simply irreplaceable. Don't expect your 1/4 times to drop too much on street tires because you'll be fighting for traction for the first 60 ft.
Go with the 3.73. Do you have FI? or do you plan on getting FI? If so defiantly stay with 3.73. While on the subject did anyone catch the brief article in the latest 5.0? I think it was KB who tested performance with and without gears. I was surprised to see the drop in power with gears. The article does state that gears help with accelerating...
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Go:V3 Brenspeed STD, Bassani X pipe, JBA Shorties, FRPP 3.73, Spintech Super Pro Axle back, X3 Tuner, Steeda oil separator. Tune: Brenspeed 91 custom V3 Electronics: Alpine 505P1 nav/dvd, Autometer cobalt wideband+boost/vac Show: Blue LED maps, Halo Fogs, Silverstar bulbs.
Dyno/Installs: GTR
its up to you and which route you decide to take. Both are good choices. N/A go with 4.10's. Hitting the strip alot and FI go with 4.10's. Street/Strip with FI go with 3.73's. I went with 3.73's with my whipple
Our car is a strip only vehicle. We use 3:50 gears
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06GT 76mm turbo, 302 stroker
2008 race season
4r70w(sold), triple fuel pumps(sold), 4:10 gears, spool
10.0@136 mph, 1/4
rwhp: not a clue, only number interested in is ET
2009 race season
built motor rebuilt (after boooom), custom intake manifold, III heads III spr cams,
powerglide transmission done, 3:50 gears, fuel cell build started
rwhp: enough to go low 9s
im leaning more towards the 3.73's but idk the 4.10's sound bad ass
I thought about 3.73s as well, but I am glad I got 4.10s. From a low roll or dead stop I simply FRY the tires if I am not careful. Makes burn outs a peice of cake ( I know, bad, bad, bad!) With some good DRs, I am pretty confident I could make a very high 12 sec pass (12.9)
What are your future plans? If you plan on forced induction you may want to wait for that and see what you trap is like at end of 1/4 mile. A street car would be fine with 3.73 gears.
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FRPP Handling Pack, 95mm CAI, GT-500 throttlebody, FRPP CMCV delete plates, FRPP X pipe, JBA axle backs, Moto Blue UD Pulleys, PowerSurgePerformance 93 octane tune. Ford Racing Parts Dealer!! SpartaPerformance.com 13.05 @ 107.44mph.
4.10 has been working good for me. 1.64 60ft 11.96 @113mph is my best so far but wait until next year when the stang gets a make over, should be in the 10's all motor with 4.10 gears.
But it is up to you on what the main purpose of your car will be. Do you want to just drive it and take it to the track a few times or are going to run it at the track every weekend. if you are going to drive the majority of the time go with 3.73.
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3.73 or 4.10? Which gears?
