Effects of performance modifications on engine life.

[BRENT in 10-uh-C]

Hi Todd, it has been over 4 hours since I first read this and I see that no one has posted so let me just offer it this way. Modifications are not the only thing that causes engine failures. It can be the way the engine is operated that causes the problem too.

If the engine was poorly constructed (improper pouring of Babbitt, incorrectly grinding the crankshaft, poor machine work) and you are adding those items, sure it will probably exacerbate the upcoming "death" of the engine. If the engine work was done correctly and the vehicle is driven sensibly, the items you mentioned will not have any adverse effects on longevity.