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

Gears for Superram?!

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Old Dec 27, 2003 | 04:13 PM
  #1  
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Default Gears for Superram?!

Hi guys,

I am going to install Superram (base, runners, plenum) to my stock 350 engine with 74219 camsgaft and propably AFR 190-195 cylinder heads (or something cheaper).

(btw I have -88 automatic vette)

I would like to also upgrade my transmission to get the "launching" better.
I am currently running with 3.07 gear ratio and I was wondering would a higher rear end do me any good?? I was browsing TPIS website and saw that they are selling 3.73 gear sets.
I'm also wondering about the torque converter and shift kit. Ive read from past posts that 2200-2400 might be best for my setup?

Was it Transgo who made the best shift kits?

My vette is daily driver during summer. I like to keep it very driveable but it has to have torque and some serious HP!

Any advice would be appreciated :D


[Modified by jutammel, 9:14 PM 12/27/2003]
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Old Dec 27, 2003 | 07:30 PM
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Default Re: Gears for Superram?! (jutammel)

I have a combination that is very similar to what you are going to build. I installed 3.45 gears to help with the holeshot and I installed a 2800 to 3200 RPM stall speed with lockup to help with the 60 ft times. Before I installed the 2800 to 3200 stall speed I had a 2400 RPM stall speed. On street tires I could smoke the tires any time I wanted but with the slicks the engine dogged until 2600 or 2700 RPM and then took off, that is why I went with the higher stall speed. If you are not planning to race the car with slicks, stick with the 2200 to 2400 stall speed.
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Old Dec 27, 2003 | 07:34 PM
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Default Re: Gears for Superram?! (bjankuski)

A 3.73 is going to do nothing for an automatic superram. :cheers:
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Old Dec 27, 2003 | 08:03 PM
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Default Gears for Superram?!

A 3.73 is going to do nothing for an automatic superram. :cheers:
Truer words we're never spoken. A 3.07-3.45 will work best for an auto super ram L98. I prefer the 3.45's. :cheers:
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Old Dec 27, 2003 | 08:57 PM
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Default Re: Gears for Superram?! (Jay 383)

I'm stayin' with the 3.07's in my auto
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Old Dec 27, 2003 | 10:18 PM
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Default Re: Gears for Superram?! (chucks88)

I plan to keep 3.07 gears, with the same combination you're going to be running.

The SR does not NEED gear, youll need to worry about traction with what youve got already.

But do change the TC, 2400 is probably what I will run. Get a tranny cooler, get a tranny cooler, get a tranny cooler!


[Modified by vader86, 10:23 PM 12/27/2003]
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Old Dec 27, 2003 | 10:23 PM
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Default Re: Gears for Superram?! (vader86)

Hehe, last week I ordered a Dana 44 with 3.45 gears. Guess I will be hating/adoring them in the near future :)
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Old Dec 28, 2003 | 05:39 AM
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Default Re: Gears for Superram?! (jutammel)

Thanks guys, I might just keep my 3.07 gears and go with the 2200 torque converter and shift kit.

Oh yeah, and gotta keep in mind that tranny cooler!
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Old Dec 28, 2003 | 11:32 AM
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Default Re: Gears for Superram?! (jutammel)

with a little 350 motor then the 340-350 gears will work out fine in a 383 a 320-330 gears will work nicely and a 406 a 307 is just right now anything larger than a 406 then the 307 will be too much and i would sugest to go larger tires is everybody confused yet :cheers:
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Old Dec 28, 2003 | 11:34 AM
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Default Re: Gears for Superram?! (CORKVETTE1)

but i did run a 307 gear 350 with a converter myself that was only because the 350 motor i knew at the time would be pulled in favor of more cubes later on :D :cheers:
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Old Dec 28, 2003 | 11:55 AM
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Default Re: Gears for Superram?! (jutammel)

Just curious, I though the automatic tranny that comes with the Dana 36 only has gears ratios under 3 and all the Dana 44 had gears ratios over 3?

Could someone correct me if I'm wrong?

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Old Dec 28, 2003 | 12:16 PM
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Default Re: Gears for Superram?! (TheStef)

there was an option 307 gear dana 36 too :cheers:
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Old Dec 28, 2003 | 12:18 PM
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Default Re: Gears for Superram?! (CORKVETTE1)

g92 was the code for it :cheers:
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Old Dec 28, 2003 | 12:26 PM
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Default Re: Gears for Superram?! (CORKVETTE1)

I have the 2.70 gears, does this mean I'm only limited insde the 2.?? ratios or can I go into the 3.** ratios as well?
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Old Dec 28, 2003 | 12:32 PM
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Default Re: Gears for Superram?! (jutammel)

http://temp.corvetteforum.net/c4/bea...eResults.shtml

There is some good reading for you.
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Old Dec 28, 2003 | 12:34 PM
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Default Re: Gears for Superram?! (Corvette0096)

Thanks! I'll read up
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Old Dec 28, 2003 | 02:14 PM
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Default Re: Gears for Superram?! (CORKVETTE1)

there was an option 307 gear dana 36 too :cheers:
G44=3.07

G92 does not necessarily trigger 3.07 in all models.
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Old Dec 28, 2003 | 02:16 PM
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Default Re: Gears for Superram?! (TheStef)

I have the 2.70 gears, does this mean I'm only limited insde the 2.?? ratios or can I go into the 3.** ratios as well?
The 2-series carrier and 3-series carrier for the D36 are supposed to be a bit different, but I dont know enough about it to tell you for sure. I know there are places who build gears lower than 3.07 for the D36 though. (3.33, 3.54, 3.73.....)
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Old Dec 28, 2003 | 03:18 PM
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Default Re: Gears for Superram?! (vader86)

The 3.07 has been proven too many times with the Superram.
I would stick with them.

Vic
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Old Dec 28, 2003 | 10:53 PM
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Default Re: Gears for Superram?! (TheStef)

TheStef wrote:
"I have the 2.70 gears, does this mean I'm only limited insde the 2.?? ratios or can I go into the 3.** ratios as well?"

No, you're not. It's my understanding that there are aftermarket 3.xx gears that were designed to work with the Dana 36 2 series rear ends however, the closer you get to 4.xx, the easier it is to break them. There are more than a few people on the Forum who have done this (upgraded without problems AND upgraded and broken them!). Best bet is to hit the archives. The info is definitely there...
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