- Location
- San Diego
98 Chevy C3500
454 zz502 cam injectors custom tune MSD 6AL etc etc
NV4500 luk clutch
FF14 bolt locked
18 empty 14 with the jeep on the back@ 80+
i didnt think the 454 could get that good of mileage. we have the same 454 vortec in our 96 suburban and get like 13 highway, stock, and empty. easily in single digits towing. but we also have used a hypertech power programmer on it to get a little more power.