99xcss4
frank'n (truburban) K-2500
that is pretty interesting same speed as the vortecs but the rpms are 1000 lower the vertecs are have hard cut off at 5800 rpm with the black box it can not be set high now if you do a 0411 swap it can be raised or removedThe .bin in my '91 305 is 98 MPH with a 4800 RPM limit and the BPSA .bin in the 7427 for '95 G series van is the same. I haven't studied all the .bins on gearhead efi but the few I have looked at all had 98 MPH speed limiters. I'd be interested in seeing what they burned into a cop car prom.
If you have the ECM# and BCC for the 454SS I may be able to find it and see what they did.
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