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3649 Views 9 Replies 4 Participants Last post by  GoinManta
OK... I have three simple choices for my Opel swap.

The 240SX used a final ration 4.10:1

The simple choices I have are

I can either install a Impulse Rear end (3.90:1)

Manta Rallye - 3.67:1

Manta Std - 3.44:1

What are the pluses and minuses..?

The 240Sx wighed close to 2900 lbs.. the Manta 2200 lbs

Keeping tires equal, the 240sx did about a 8.9 in the 0-60

What would the Mnata do with the respective different ratios..

Also what about gas mileage.. The 240 got like 24mpg or something..

What do you think I can realizitically expect from the Nissan motor? Given the gears I have.

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With the weight of the Manta you should easily be able to get away with taller gearing. MPG will jump up too. Just a thought, is there any difference in the diameter of the tire on the Manta Vs. the 240?
GoinManta said:
City the 240sx got 22 and Hwy was 28.

The Manta I think would see in the 26 range City and 32 Highway...with the 3.44 Hmmm...
I don't think you can make a direct comparison like that. You need to include the difference in drag coefficient between the body of the Manta and the 240 in your calculations.
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