Can you calculate how much faster the Z will be 0-60 by knowing how much more HP you upgrade in it? I know the Z is 0-60 in 5.4 Seconds at 287HP, Then by upgrading it to lets say 300HP, is there any way of knowing your 0-60 time without actually trying it? Sorry for the stupid question if this is something I should know but I don't. Thanks.

 

The genenal rule of thumb is One tenth of a second for every ten horsepower added. Also for every 100 pound reduction in weigth it also equals one tenth of a second.

 

I would say a bigger factor is the driver, so the answer IMO is no.