the 301 turbo was unique in that it had a stronger block with thicker cylinder walls made from reinforced materials compared to the '77-'81 301 naturally aspirated low-deck block, and featured a lower compression ratio (lower compression due to the increased pressure created by the turbo system). further it had newly developed internals such as forged pistons, a relatively mild camshaft, a high pressure oil pump (60 psi) to ensure adequate oil to the oil-cooled garrett tbo-305 turbocharger, a rolled fillet crankshaft with 2 instead of 5 counterbalances, a fully baffled oil pan, and a high pressure fuel pump (10 psi), a unique single plane intake, side and turbo-specific exhaust manifolds, and an electronic spark controller (esc) using a knock sensor to retard timing when detonation is detected.