[bigred]

does anyone know if you can bump up the timming on a 4.3L to increase the hp

 

[98ZQ8Sonoma]

i believe hypertech has a programmer that will do that for you. Im not positive that it does, but your required to use premium grade feul after it so im guessing it does mess with timings.

 

[blueskyjack]

That's correct.

Either have your computer flash programmed or use a programmer. I think the newer 4.3s even have a lock pin on the distributor so that it cannot be rotated.

 

[vince]

Hey big red,Ihave a hypertech power programmer III for sale, asking $250. Let me know if interested.
Sorry only fits 98s10.