Originally Posted by 99BonnevilleSE
So when I beat 95% of all the L67'* out there with my Forced Induction stock 100,000 miles L36, I will dispell the durability issue? Along w/ the durability of a 4T65E... I think ZZPerformance also has shows that with the Centrifgal Kit on the GP GT'*, Impala'* and Monte Carlo'*.
And Drifter420, the L67 is more durable because it has forged rods/pistons (8.5:1 CR) and a forged crank which is basically a no brainer on a factory */C engine. And just because it'* forged doesn't mean it going to be more reliable, actually it would be less reliable than a N/A engine.
True indeed the Centrifugal */C will definitely work better then the Roots Eaton we have.. but again... we're now going into aftermarket though.. in which case... all gloves are off in a sense. I am refering to in stock form...
As for forged pistons and all.. why would that be less reliable ?? As far as I know.. the difference is that normal pistons are a bit more giving ( more elastic in a sense ) that if for example you take a normal piston and a forged piston.. and you hit them both with a hammer.. the normal piston would warp and leave the imprint of the hammer hit.. whereas the forged ones will crack. However.. the forged pistons also has a higher heat and abuse rating. I am not trying to argue by the way... I much like most member would just like to learn more so I won't be giving people wrong ideas.
But doesn't the L67 also come with roller rockers and few other goodies that doesnt come stock with the l37'*