C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

New gears??

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Old Aug 24, 2002 | 11:24 PM
  #1  
Bob88Convertible's Avatar
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Default New gears??

Like to get rid of my 2.59's, whats the next step up. How much will it affect mileage or top end. Will I have to upgrade to dana 44, don't race much, just looking for a little more low end. Whats the approximate cost installed.
Thanks for any info.

Bob
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Old Aug 25, 2002 | 12:41 AM
  #2  
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Default Re: New gears?? (Bob88Convertible)

3.07s would be the next step up, its the perfect gear for the L98, you wouldnt have to switch to D44 if you went with 3.07s.

It wont affect a top end that you never see, youll still top out at about 150, but when do you drive 150mph?

Mileage in mine is 19-20avg, 25hwy, 16-18city. (I have 3.07s in my 86)
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Old Aug 25, 2002 | 11:14 AM
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Default Re: New gears?? (vader86)

3.07s would be the next step up, its the perfect gear for the L98, you wouldnt have to switch to D44 if you went with 3.07s.

It wont affect a top end that you never see, youll still top out at about 150, but when do you drive 150mph?

Mileage in mine is 19-20avg, 25hwy, 16-18city. (I have 3.07s in my 86)
Thanks for the info, Vader. What am I looking at for cost?? How much quicker is your 86 with the 3.07's.

Thanks again.

Bob
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Old Aug 25, 2002 | 12:41 PM
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Default Re: New gears?? (Bob88Convertible)



Contact Wes at Zip Products. I paid under 800 bucks for this 3.54 unit.

I've got a mechanic whose charging $150 to put it in.
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Old Aug 25, 2002 | 02:00 PM
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Default Re: New gears?? (Bob88Convertible)


Thanks for the info, Vader. What am I looking at for cost?? How much quicker is your 86 with the 3.07's.
Well i dont have numbers for comparison, but i can easily smoke the tires. Ive chirped them going into 2nd before. Not sure on cost of a D44 with 3.07s, but if you stayed with the D36 (just never run slicks) it shouldnt be much at all.
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Old Aug 25, 2002 | 02:23 PM
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Default Re: New gears?? (Bob88Convertible)

I paid $900 - best mod so far except for the nitrous. :eek:
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Old Aug 26, 2002 | 10:12 AM
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Default Re: New gears?? (Bob88Convertible)

Bob88Convertible... I to live in Plant City and have been considering the same gear swap. If you would like to get together and share information, please feel free to e-mail me.

Also if you are not participating in any club, but would like to join one checkout our web site http://www.tampabayvettes.com :seeya
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Old Aug 26, 2002 | 10:21 AM
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Hey Polo how does your wife like that thing sitting on the kitchen counter? :D Does it make a good meat grinder for the meantime? :lol:
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Old Aug 26, 2002 | 12:40 PM
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Default Re: (scorp508)

Scorp, She is getting ready to push it on the floor..

She tell's me I'd park the whole thing in the living room If I could.

She probably right :D
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Old Aug 26, 2002 | 02:28 PM
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Default Re: New gears?? (Bob88Convertible)

I have heard that from a 2.59 to a 3.07, it may not be a huge difference in acceleration (low-end), but Vadar knows what he is talking about, so I am probably wrong. hehe
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Old Aug 26, 2002 | 08:58 PM
  #11  
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Default Re: New gears?? (dbwade36)

I have heard that from a 2.59 to a 3.07, it may not be a huge difference in acceleration (low-end), but Vadar knows what he is talking about, so I am probably wrong. hehe
Ok, whats the skinny on this, is 3.07 a big enough change, whats the next step up. Don't want to spend a thousand bucks and be disappointed.

:confused:
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Old Aug 28, 2002 | 12:41 AM
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Default Re: New gears?? (Bob88Convertible)

I have heard that from a 2.59 to a 3.07, it may not be a huge difference in acceleration (low-end), but Vadar knows what he is talking about, so I am probably wrong. hehe

Ok, whats the skinny on this, is 3.07 a big enough change, whats the next step up. Don't want to spend a thousand bucks and be disappointed.

:confused:
I'd like to know too. I'm saving up for a gear change right after I get the car repainted...
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Old Aug 28, 2002 | 01:07 AM
  #13  
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Default Re: New gears?? (Bob88Convertible)

Bob,
Go with 3:54's ! I had a 2:59 and went to 3:54 WOW! :D, unfortunatly they were from Florida Caliper :U broke while driving 40 mph from work. :mad I now have 3:73 from http://www.ikerds.com :cool: Pat Ikerd is who owns the place, he supplies rearends to Mid-America Designs catalog.
My gas milage w/2:59 was about 29mpg with 3:54 about 24mpg and with 3:73 about 22mpg thats with cruise set and NOT getting on it. I average about 18mpg in town with interstate driving. And remember to read my mods list, thats with everything listed, not bad huh?
My tach runs about 2200 rpm @ 60-65 with 3:73, I believe it was 2000 @ 60-65 with 3:54.

I did the swap myself, 1st time about 3.5 hours. 2nd time about 2.5 hours, already knew what to do. I used a Chiltons manual.

You'll enjoy any gear swap!!

Mike
So my advice is at least go with 3:54's and no more than 3:73.
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Old Aug 28, 2002 | 01:09 AM
  #14  
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Default Re: New gears?? (Bob88Convertible)


Ok, whats the skinny on this, is 3.07 a big enough change, whats the next step up. Don't want to spend a thousand bucks and be disappointed.

:confused:
The next step is 3.33s for the D36, then 3.54s. 3.07 is a big enough difference with an L98, for an LT1 it isnt.
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Old Aug 28, 2002 | 08:33 AM
  #15  
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Default Re: New gears?? (CROOZN)

There is no doubt that Ikerds is the place to go. Good quality, great prices and shipped right to the door. Have my 3.07 from them in for over 2 years now.

PS: on the comment on parts in the kitchen and the Vette in the livingroom...like this is unusual!!!!!!!!!!!!!!!!!!!!!!
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