4.8 with rattler cam input

[jpapoi]

i was wanting some input on this tune,its the first ive done. 04 silverado 4.8 with rattler cam and valve springs. truck runs good but is lacking on power.papoitrucktunereducedtimingchopmoreair.hpt

[kevin87turbot]

Depending on what fuel you are using, you can likely add a couple more degrees timing and disable burst knock for some more performance. However, changing the rear gear from 3.42 to 4.10 and adding a higher stall torque converter would really help performance.

[jpapoi]

thank you,ill give it a try!!