5.3 Increasing Compression
They say on average is about 3-4% increase in torque for a full point increase in compression. So you would get a little bit less than that, I would say 5-10 at the most.
Although you will feel it in part throttle driving more than going WOT.
Although you will feel it in part throttle driving more than going WOT.
If you really want to make a difference, go to some small chambered heads. Get up to about 11.3-11.5:1 and you'll have a pretty stout 5.3 if pared with the correct cam and a good tune. Also, correct rear end gearing will make the seat of the pants feel a whole lot different as well.
