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MrSkaw

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Posts posted by MrSkaw

  1. There are so many variables to mileage - tire size, ring and pinion gear ratio, tuning, whether your stomping on the gas, etc. etc. I've seen identical motor sizes in different vehicles and some have great mileage and some terrible, so what my gas mileage is won't really be the same for someone else.

     

    I had a 4.3L in before this swap, and that was about the same as the original 3.0 but the 4.3 had a lot more torque and I had gone to 4.88 gears and 33" tires. So far, the Lt1 (5.7) is a bit thirstier than the 4.3L but not by a lot if I take it easy.

     

    The problem is that with all that HP, especially since its like a new toy when I first had it out, it was almost impossible to resist the urge to stomp on the gas pedal.

     

    I've entered into the next phase of the obsession and started to get into PCM tuning with some of the LT1 software. We'll see where that leads and I'll get an update when I get around to doing some serious tuning. Part of the reason I've delayed the tuning is that I'm considering ditching the OptiSpark distributor and going to a full LS based PCM and the 8 individual coils, which allows for major tune-ability over the LT1 PCM

     

    From there I'm looking at a doubler setup with a 241 for reduction, and a NP205 (DSD), and it if makes sense (an doing a lot of homework on it still) going to a 6 speed manual T56 trans, which combined would give me double low gears for off road, and double over drive (the T56 comes with a final overdrive of .62 to .5) for the highway.

     

     

     

     

     

    Awesome

     

    Sent from my XT1254 using Tapatalk

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