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-   -   pros and cons of a lightweight crank? (http://www.hotrodders.com/forum/pros-cons-lightweight-crank-171263.html)

boredandglued 01-09-2010 09:48 PM

pros and cons of a lightweight crank?
 
can anyone tell me the advantages and disadvantages of running a scat superlightweight crank in a street driven 383 chevy? i know you can rev a little quicker but are the gains worth it? thanks

C-10 01-10-2010 02:19 AM

pro: lightweight
con: expensive
wallet: lighter

A lightweight crank is usually not recommended for the street. The real end result price goes up exponentially if 'heavy metal' has to be added to get a balance. Special bearings with provisions for the bigger fillets usually found on light cranks must be used. For the street, money is better spent on cyliner heads and durability.

engineczar 01-10-2010 05:20 AM

While capable of freeing up some HP going to a lighter crank requires equally light connected parts to make it all work ie rods and pistons. Run of the mill rods and pistons won't get you near the bob weight needed to balance out. So like the previous poster said you'll end up having to add weight back onto the crank which is expensive and negates doing it in the first place.

boredandglued 01-10-2010 09:06 AM

makes sense!
 
thanks yet again!

candy63impala 01-10-2010 02:30 PM

good info to know


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