hi
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3.54 gear question!!
What cars came with 3.54 gears? I have a D44 with 3.07's, and I just purchased a Miniram II. Along with the heads, and cam I bought, I have a feeling the 3.07's wont cut it anymore.
I think the 3.54's are a good gear because my 4+3 individual gears are different then the ZF6. They are 2.88/1.91/1.33/1.00.
If you compute those #, and use a 3.54. Its about the same as a ZF6 with 3.73's.
Anyone have any for sale, and what years did they come in? I always see ppl selling 3.45's, but not 3.54's.
Some ppl have commented to me that with a 3.07's i would prob see high 12's, but with a gear like a 3.54 or 3.73's, mid-low 12's are possible. I dont know...........
Rick.
I think the 3.54's are a good gear because my 4+3 individual gears are different then the ZF6. They are 2.88/1.91/1.33/1.00.
If you compute those #, and use a 3.54. Its about the same as a ZF6 with 3.73's.
Anyone have any for sale, and what years did they come in? I always see ppl selling 3.45's, but not 3.54's.
Some ppl have commented to me that with a 3.07's i would prob see high 12's, but with a gear like a 3.54 or 3.73's, mid-low 12's are possible. I dont know...........
Rick.
Last edited by 88BlackZ-51; Nov 22, 2005 at 04:00 PM. Reason: Did not mean to put "hi" as my title.
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Originally Posted by cuisinartvette
what r ur mods 
I got a good deal on a Miniram II, I will be using my Trickflows's that flow 260cfm, and have springs good to .600 lift. I will also be trying out my Accel 219 that I bought a while ago. Those are my main mods.
I will also be using my stock 48mm TB, 1.6 Comp Pro Magnum Rocker, Comp Pro Magnum Lifters.
Still not sure about gasket size as this heads are 62CC and i dont want to loose CR.
Burning Brakes
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From: The land of 10,000 lakes ,Minnesota 89 coupe 6speed with 383 and 89 roadster 6speed bonestock with XXX low miles
I have two 89s 1 coupe 1 roadster both factory 6speeds I have had the build sheet for the coupe for some time now the roadster build sheet just came in the mail yesterday as you can see the two 89s have different rear axle gears
roadster build sheet
coupe build sheet
I think it depends on year and model
One has 3:54 gears the other has 3:33 gears
roadster build sheet
coupe build sheet
I think it depends on year and model
One has 3:54 gears the other has 3:33 gears
Last edited by 89sleeper; Nov 22, 2005 at 11:47 PM.
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Hey there
As I understand it 89 ZF equipped cars had 3.54 gears (and maybe some early 90 cars). 90 ZF equipped cars had 3.33's.
3.07's were never offered with the ZF box from the factory.
BTW, if you are going to make big power or run slicks, I'd look into whether you can get "Super 44" or "Viper" gears for your D44. Stronger gears and they drop right in from my understanding. My friend has a set of these (in 3.92 ratio) in his 91 ZR1.
Nice to see you got a MR.
Andrew
As I understand it 89 ZF equipped cars had 3.54 gears (and maybe some early 90 cars). 90 ZF equipped cars had 3.33's.
3.07's were never offered with the ZF box from the factory.
BTW, if you are going to make big power or run slicks, I'd look into whether you can get "Super 44" or "Viper" gears for your D44. Stronger gears and they drop right in from my understanding. My friend has a set of these (in 3.92 ratio) in his 91 ZR1.
Nice to see you got a MR.
Andrew
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Originally Posted by The Dingo
Hey there
As I understand it 89 ZF equipped cars had 3.54 gears (and maybe some early 90 cars). 90 ZF equipped cars had 3.33's.
3.07's were never offered with the ZF box from the factory.
BTW, if you are going to make big power or run slicks, I'd look into whether you can get "Super 44" or "Viper" gears for your D44. Stronger gears and they drop right in from my understanding. My friend has a set of these (in 3.92 ratio) in his 91 ZR1.
Nice to see you got a MR.
Andrew
As I understand it 89 ZF equipped cars had 3.54 gears (and maybe some early 90 cars). 90 ZF equipped cars had 3.33's.
3.07's were never offered with the ZF box from the factory.
BTW, if you are going to make big power or run slicks, I'd look into whether you can get "Super 44" or "Viper" gears for your D44. Stronger gears and they drop right in from my understanding. My friend has a set of these (in 3.92 ratio) in his 91 ZR1.
Nice to see you got a MR.
Andrew
what do u mean by super 44 or viper?
are these big bucks?
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Its fairly rare to find it, the early ZF's had multiple gearsets offered because GM was trying to find the perfect combination.
Early '89s came with the 3.54 as the OEM standard gear, but it was changed during the model year to 3.33, and from then forwards was only an option for a couple years. 90 got the 3.45 as standard, and from then forward that was the standard gear. A few early LT1 years had 3.54 optionally, and thats it.
Early '89s came with the 3.54 as the OEM standard gear, but it was changed during the model year to 3.33, and from then forwards was only an option for a couple years. 90 got the 3.45 as standard, and from then forward that was the standard gear. A few early LT1 years had 3.54 optionally, and thats it.
Burning Brakes
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From: The land of 10,000 lakes ,Minnesota 89 coupe 6speed with 383 and 89 roadster 6speed bonestock with XXX low miles
Originally Posted by vader86
Its fairly rare to find it, the early ZF's had multiple gearsets offered because GM was trying to find the perfect combination.
Early '89s came with the 3.54 as the OEM standard gear, but it was changed during the model year to 3.33, and from then forwards was only an option for a couple years. 90 got the 3.45 as standard, and from then forward that was the standard gear. A few early LT1 years had 3.54 optionally, and thats it.
Early '89s came with the 3.54 as the OEM standard gear, but it was changed during the model year to 3.33, and from then forwards was only an option for a couple years. 90 got the 3.45 as standard, and from then forward that was the standard gear. A few early LT1 years had 3.54 optionally, and thats it.
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Originally Posted by vader86
Its fairly rare to find it, the early ZF's had multiple gearsets offered because GM was trying to find the perfect combination.
Early '89s came with the 3.54 as the OEM standard gear, but it was changed during the model year to 3.33, and from then forwards was only an option for a couple years. 90 got the 3.45 as standard, and from then forward that was the standard gear. A few early LT1 years had 3.54 optionally, and thats it.
Early '89s came with the 3.54 as the OEM standard gear, but it was changed during the model year to 3.33, and from then forwards was only an option for a couple years. 90 got the 3.45 as standard, and from then forward that was the standard gear. A few early LT1 years had 3.54 optionally, and thats it.
I don't think it is so much a matter of multiple gearsets being offered at any one time but that different gearsets were phased in over the late/early model year build phase. This scenario is relevant to the changeover from 3.54 to 3.33 but not to the changeover to 3.45's.
91 saw the intro of 3.45's on all six speed cars.
Last edited by The Dingo; Nov 23, 2005 at 01:11 AM.
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Originally Posted by 88BlackZ-51
what do u mean by super 44 or viper?
are these big bucks?
are these big bucks?
I figure if it isn't a huge difference in cost why not go for the stronger part?
Last edited by The Dingo; Nov 23, 2005 at 01:13 AM.
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Originally Posted by black_89_vette
I have an 89 with a ZF Z51 option and it has 3.33
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Originally Posted by The Dingo
Sorry but your statement about 90's having 3.45's is not correct (except perhaps on a ZR1 application only). 90 L98's had 3.33's.
http://temp.corvetteforum.net/c4/vader86/rearaxle.html
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Originally Posted by vader86
Thats right, I didnt read my own website.
http://temp.corvetteforum.net/c4/vader86/rearaxle.html
http://temp.corvetteforum.net/c4/vader86/rearaxle.html
vader86 and The Dingo have answered it.