Horsepower change?

New AL block is 105 lb lighter. Lithium battery took off another 25 lb for 130 total, all up front.
Aluminum blocks are argued by some to show less hp, due to ring seal and heat disapation.
Weight distribution is about as good as i can do without adding forward ballast. If i can't get it to hook i may have to go back to a heavier battery or add ballast. I hope to run solid 8.50 in the heat, 3500 da. We will see. All normally aspirated, though if i come up short i could run M5. That fuel is worth a solid tenth ET.