Performance if both engines are stock the the ecotec has about 15-20kw over the old 3.8's
are ecotec motors really that much better then the buick motors
in terms of:
Performance
Fuel Efficiency
Refinement (smoothness)
How much smaller/lighter are they?
any things else that might be of use....
Performance if both engines are stock the the ecotec has about 15-20kw over the old 3.8's
yes and no.
better flowing heads, 4 bolt mains. weaker rods and pistons (unless you have a l67 botom end). smoother.....maybe a little.
Body by Holden, Soul by Brock
the Legend will live forever
VN exec T5: 15.1sec @92.2mph 1/4 mile, 9.7sec @ 74.6mph 1/8mile, 2.3sec 60ft, 0-60mph 6.827sec 22/11/07 Gtech competition
Stock the ecotecs are better. The buicks run lower compression which means they are more suited towards forced induction.
EG, Stock Buick engine + SC14 setup would cost around $1500-2000 but return around ~175rwkw. More if you upgrade the exhaust.
You wont get a Ecotec to put out that sort of power for that price.
From my experience, the buick engines tend to be a little stronger and simpler. As long as you change the oil occasionally they should last forever...