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

New Gears...Hypertech prollem?

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Old 06-12-2002, 09:30 PM
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95AquaC4
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Default New Gears...Hypertech prollem?

I am having 3.54 gears installed and I am going to need to flash my PCM with the change, however 3.54's are not in the option list of my Hypertech Programmer!! Now what?
Old 06-12-2002, 09:53 PM
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STL94LT1
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Default Re: New Gears...Hypertech prollem? (95AquaC4)

Just tune it to the nearest available ratio on the Hypertech, it will be close enough.
Old 06-12-2002, 10:37 PM
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jpee
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Default Re: New Gears...Hypertech prollem? (STL94LT1)

You can set it to the closest ratio, then experiment with using different tire diameters & you CAN get it EXACTLY correct..

In my case I installed 3.73 rear, & the closest Hyper has is 3.70 when I had the stock tires on they were 26" diameter but I set the Hyper to 25.5 & my speedo was dead on..

It may take a few tries but just play with the tire size..
Old 06-12-2002, 11:21 PM
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Mr Mojo
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Default Re: New Gears...Hypertech prollem? (Red96Coupe)

I had to do mine the hard way. I actually had to switch the plastic gears in the tranny.
Old 06-13-2002, 12:24 AM
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GS 163
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Default Re: New Gears...Hypertech prollem? (Red96Coupe)

You can set it to the closest ratio, then experiment with using different tire diameters & you CAN get it EXACTLY correct..

In my case I installed 3.73 rear, & the closest Hyper has is 3.70 when I had the stock tires on they were 26" diameter but I set the Hyper to 25.5 & my speedo was dead on..

It may take a few tries but just play with the tire size..
Thats exactly what I did.:)

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