I am building the fastest full weight SBE 8.1 pickup truck, but to get there, its gonna need some upgrades in the airflow department. The 8.1 vortec is a 496 cubic inch big block that has massive power potential, but is often overlooked in favor of its smaller brother, the LS. To extract all that power however, we are going to need some upgrades in the airflow department.
https://www.tolmanperformance.com/
Raylar aluminum cylinder heads for the 8.1 Vortec
https://www.raylarengineering.com/cylinder_head.html
the Gen7R intake manifold
https://www.raylarengineering.com/intake_manifold.html