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Thread: Help with Gearing..

  1. 04-16-2008, 07:25 AM #1
    Mudi
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    Help with Gearing..

    I will soon be installing a 2.7RS engine in the 67S. I don't want to use the original transmission with this engine. What gearing should I be looking for??

    I've been running the car with 205/50/15 tires, I also have a couple of sets of 205/60/15 A008's, but I don't want to use them up..

    I also don't want to modify anything to fit a later transmission, as this is a "temporary" engine until I get the 2.0S engine back together.

    Any and all thoughts are welcome.. Past experience tells me, If I leave the 901 in there as it stands, I'll be out of gearing way before I want to be.
    Bob Petitt
    1967 911S Coupe 307653S, my barn find - 55,000 miles Looking for engine #961269 and trans 901/02 #104337
    1971 911T Coupe 9111120264, my first 911 back in my garage
    1972 BMW 2002, my first car - 350,000 miles and counting
    1972 911T Coupe 9112100970, Sporto, parted it out..
    1983 BMW 320i, my everyday car - 138,000 miles and gutless
    2005 Subaru Outback, the daily driver - boring
    2006 Volvo XC90,

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  2. 04-16-2008, 08:23 PM #2
    tfiv
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    That gearing is actually outstanding in front of a 2.7. You'll run out of aerodynamics before you run out of gears!
    Tom F.

    '67 911S Slate Gray
    '70 911T 2.8 hotrod (in progress)
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  3. 04-17-2008, 01:55 PM #3
    SandyI
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    Quote Originally Posted by tfiv
    You'll run out of aerodynamics before you run out of gears!
    +1.

    A SWB 2.7 at 7200 RPM in 5th gear?!

    Have a fresh set of underwear handy.
    Sandy Isaac
    '69 911E
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  4. 04-17-2008, 05:03 PM #4
    37yrold911
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    you'll be able to pull stumps in 1st

    I don't agree w/others above but you can put up with it until the next rebuild.
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  5. 04-18-2008, 07:50 AM #5
    Mudi
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    thanks for the responses..

    I am concerned i'll run out of gears too fast for the long track we run on.. After all, the 2.0s let go at 7300 rpm, sustained for about 1.5 miles each lap. It was running like a Bat out of Hell, so I'm figuring i'll be hitting the rpm limit even faster..

    How about a 915 installed in a swb car??? What concerns?? What Modifications, etc..
    Bob Petitt
    1967 911S Coupe 307653S, my barn find - 55,000 miles Looking for engine #961269 and trans 901/02 #104337
    1971 911T Coupe 9111120264, my first 911 back in my garage
    1972 BMW 2002, my first car - 350,000 miles and counting
    1972 911T Coupe 9112100970, Sporto, parted it out..
    1983 BMW 320i, my everyday car - 138,000 miles and gutless
    2005 Subaru Outback, the daily driver - boring
    2006 Volvo XC90,

    Registry Membership #202
    Reply With Quote Reply With Quote
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