Thread: 454 B/B chev

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IMO if you have your TBI tuned to optimize your A/F ratio specific to your engine you should get better performance and efficiency with TBI. If your TBI is one of the new self tune units then IMO the TBI will be more efficient with zero hassle. That 700r4 has a 0.70 OD ratio, and coupled with a 3.08 rear gear you should be pretty low rpm at cruise, depending on your rear tire diameter. Are you still up in your power band?

I did not build the truck . But the timing was way off. Its now at o degrees. The rear tires are 255 /70/15. The engine is a 87 b/b. It does run very good. The truck has the orig fuel tank and the fuel gauge seem to be of quite a bit the gauge is an 87 gauge.