This is topic WHAT GEARS SHOULD I GET???? in forum General Talk at Northern California Ford Owners .
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Posted by macthizzle (Member # 3492) on
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I AM LOOKING TO REBUILD MY REAR END AND I HAVE A 86 COUPE WITH 351W SVO BLOCK AND HEADS AND A TREMEC TKO TRANNY.I WAS ORIGINALLY GOING TO PUT 355'S IN BUT NOW THINKING OF 373'S.I ALSO HAVE QA1 KMEMBER A ARMS AND COILOVERS WITH UPPER AND LOWER REAR CONTROL ARMS.I DO WANT TO TAKE THIS CAR TO THE TRACK BUT I ALSO LIKE DRIVING IT ON THE WEEKENDS.MY FRIEND HAS A REAR END FROM A 98 COBRA,I WAS THINKING OF SWITCHING THE INSIDES TO MY SN95 REAREND.
Posted by 90gtvert (Member # 8697) on
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I vote for 3.55's
Posted by Jdub07 (Member # 2728) on
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If your original thought is for 3.55's then go 3.73's if your original thought is for 3.73's then go 4.10's and so on.
Posted by gtowned (Member # 8156) on
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besides gear ratio the cobra rear has the same internals as your current rear end
Posted by JohnB (Member # 969) on
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If you're staying NA, go 3.73s...3.55s for a blown setup. If you drive it alot, stick with 3.55s...you won't regret it. Only difference between a Cobra and SN95 rear is the brakes, most gear ratios are already 3.27s.
Posted by 707vibrantcobra93 (Member # 4702) on
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+1 on 3.73, not like your car is a gas saveer anyway, plus johnb knows his shit, i've known him for a while now, never leads me in the wrong direction, you'll be happy with the 3.73
Posted by Wolfie351 (Member # 651) on
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I have a similar setup and I don't like my 3.73s, it revs way to quickly to make any use of the bottom end torque. Gears are just torque multipliers. If you have a low end/high torque 351w, you don't necessarily need more gear to rev through the RPMs quickly, you already have it in your engine. With that said, I would say the final decision would depend on your engine setup.
Posted by 9svtcobra8 (Member # 8408) on
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373's!!
Posted by 707vibrantcobra93 (Member # 4702) on
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where does your engine make power rpm wise because the gears are going to be two diferent animals as far as street tires around town and slicks at the track
Posted by jaejae (Member # 7958) on
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go with the 3.73's johnb rebuilt my rear end and installed them for a coo price
Posted by STREETFIGHTER50 (Member # 2973) on
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If u do alot of freeway then i'd go 3.55's. just had my 3.73's put in by john b & i kinda regret not taking his advice on 3.55's since the car is a driver/cruiser. feels nice, but the rpm's are a little high with my freeway cruising speed
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