447 HP Vortec Small-Block Build - Budget Sledgehammer
After a few preliminary short pulls to check the mixture readings via a pair of wide-band Lambda sensors, we attempted some high-rpm pulls and were disappointed by a premature drop-off in the power curve. Jake suspected the ignition was falling off at high rpm, and replaced the HEI module in the Summit-sourced HEI with a Performance Distributors Dyna-Mod. View Related Article