1000Coupe wrote:
I think its a bit pointless to worry about peak hp figures for an old pushrod n/a 4cyl, as the dyno print will not impress anyone. whats more important is that the basic tuning and breathing mods will make the cars engine more throaty and willing to rev, so more fun to drive.
if u dont want to rebuild the engine because its in good condition already, then using good friction modifying additives like slick 50 or Nulon i find always gives about 5% more power and economy, as well as smoother and cooler running. plus extending the life of the engine.