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Gear ratio, RPO code
Ok, I looked up my RPO codes to find out what gear ratio I have, come to find out I have RPO code GT4: 3.73 gear ratio, happy with that, then it says"DUP with 5 x 1" what does that mean? I've read all over people saying DUP means duplicate, that has to be false, there is no 5X1 code. And if you...- Lokix27x
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- Replies: 2
- Forum: General Discussion
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MSD ignition 99tahoe...?
Hey guys, I have a 99 tahoe 5.7 vortec 4x4, I've been given a MSD ignition 6al by a buddy of mine, was thinking about installing but I have a few questions... would I need to run 93 octane fuel after installing? Would I improve gas mileage at all? What would the hp/torque gains be? Would it be...- Lokix27x
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- Replies: 23
- Forum: General Discussion
