Went 9.40s back in 2021 in my 2009 Ram .with my 463G3BGE block (4.165X4.25) Apache heads,2.225X 6mm Intake valve 1.65X7mm Exhaust Valve. 905 Jesel Dog bone lifters and Harland sharp rockers .,LSM custom grind .700/.715 255/265. Intake manifold was made from 2 RO7 intake manifold...Lots of welding, the Fuel Injectors were 3 inches down from the "carb" mounting pad, Sony's TB
Truck uses a 2X3 Frame from Autoweld out of Danville Pa, the front clip is from art-fiberglass. truck weighs in at 3650. rest of the truck is OEM sheet metal,trans is a modified T56 Best pass was 9.40@ 148 . on the Dyno it made 845Hp@ 8200 , Wallace calc put's its on track hp#s about 20hp Higher then the dyno cell.

the Guy I bought the truck from, ran 9.80s@135 as far back as spring 2016 with a 460CI G3 , 4.20X4.20 (sleeved 6.1) , That combo had Thiket(SP) heads and big .700 lift Custom Comp cams bought through BES and a Dragpak intake, Jesel Lifters and Rockers.

My 488(4.25X4.30) that was built for my truck earlier this year, I got 3 passes on it in April at Island Dragway, 1st pass was 9.90@139 next pass it ran 9.19@150 .Last pass was 9.20 at 149.9. cam broke behind the 1st journal sheared right off.