Quote:
Originally Posted by Sparks67
Any crankshaft can fail based on too high rpms, but if the part is made inferior then it will fail. Scat crank at 7000 rpm is still with the stated specs. My friend took his big block to 8000 rpm, and the Lunati Pro series crank is still going strong after 13 years. Tell your friend to take to 8,000 rpms and see on how long your scat crank lasts.  The engine has been rebuilt a few times, but he bought a quality USA made crankshaft. The latest upgrade he bought some expensive heads, but he has made 1100 horsepower and 900ft/lbs of torque.
Actually, he has bought cheap parts in the past for drag racing his 69 Camaro, and he had to replace them more times than buying quality parts.
So, in the end it costs you more in racing.
In this thread, though, I go for the LS7. The LS7 can be upgraded in the future for more power. |
Apples and oranges Jeff. An 8000 rpm big block is different than a 7000 rpm setup. Few people would recommend a Scat crank in an 8000 rpm big block. He wasn't building an all out engine, just a nice pump gas big block that was fun to drive. So far it's worked fine, and has worked fine in many other street engines.
I've spent plenty of money in the past with the best parts, but those were for max effort builds. You cannot expect (and don't need) the best parts in EVERY build.