Skip the auto shop - Our mechanics make house calls

Q: What's the difference between a racing crankshaft and a stock one?

asked by on

I'm rebuilding my engine kinda wanna hop it up a little bit. I'm going to put racing connecting rods but not sure if I need to change the crankshaft as well ?
My car has an automatic transmission.

Most of the time it is unnecessary to use a racing crank in a street motor, unless you are planning on building a 700HP+ motor. The racing cranks are stronger, better balanced, more aerodynamic, and also much more expensive. Most of the time the rods break before the crank does.

If you are planning on using high levels of nitrous, or boost of some kind, then a racing crank may give you piece of mind, but personally, I would spend my money on cylinder heads that are matched to the other components you plan on using. The key to HP is to efficiently get more air into and out of the engine.

If you run into any issues, consider YourMechanic, as a certified professional can come assist you with any problems you may come across. Best of luck.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I have a coolant leak. I'm not sure exactly where. I noticed a small puddle in my driveway and it leaks out intirely in days.

Coolant leaks can come from a number of components. The water pump, an external head gasket leak, radiator or hose can be just a few locations for coolant to leak from. The best way to locate a coolant leak would...

Q: Car lost power & acceleration on the interstate

Hello there, an intermittent car dying issue like you have described is an unusual case. A variety of faults can cause the car to die in this manner such as the fuel pump, battery, wiring, battery cable, or the ignition...

Q: Outside of an engine rebuild, what can I do to get high-end horsepower rather than the low-end torque inherent with american cars?

Hello. Due to the design of the engine, there's not much that can be done, aside from completely rebuilding the engine, to achieve high rpm power. Typically V layout engines are designed to provide low end torque and a smooth...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...