updating / backdating engines
Posted: Fri May 09, 2008 11:03 am
i want to run a later model 13B engine in my FB mostly for two reasons, primarily is the higher output, but secondly the 12a engine is hard to find anymore and the parts for them are usually extremely worn. What kind of class bump am i going to experience with this? I was tossing around the idea of a higer gear ratio (4.77) in either stock rear end form or a better 7.5" rear end with the same gearing (junkyard upgrades). If the engine is going to shift me a notch higher, then i might as well go ahead with other modifications, right?