Q: I have a 1979 Chevy 454 big block will it fit in my 1989 chevy

asked by on

I have a 1979 Chevy 454 can I put that motor in my 1989 Chevy 3500 will everything bolt up my transmission excetra

My car has 163000 miles.
My car has an automatic transmission.

Hi there:

In regards to actual fitting issues, it should be good, as long as you use the flywheel that mounted to the original transmission. However, you’re most likely going to have issues with fuel system, and electrical systems matching perfectly, especially if your 89 was fuel injected and the 79 engine is carburetor powered. There would also be throttle linkage problems, EVAP system and other emissions component problems that typically pop up when this type of engine swap is completed. Make sure to purchase a full service manual for your 89 Chevrolet before completing this service.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. I have a 1979 Chevy 454 big block will it fit in my 1989 chevy

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: Q: Motor Oil?

Hi There, Contrary to popular belief, it will not hurt your engine when switching from synthetic to conventional or vice versa. In fact, Synthetic blend oils are actually a mix of conventional oils and synthetic oils. Many synthetic oils are...

Q: Wheres the 89 grand marquis fuse box location?

There is a fuse box below and to the left side of the steering column. That fuse box is covered by an access door that is part of the dash. In addition, there is a fuse box in the engine...

Q: Door stuck closed

Hi, if the door isn't permanently locked, the latching or handle mechanism is most likely broken somewhere. To save on costs, car manufacturers tend to use plastic pieces in conjunction with metal for these assemblies, and over time the plastic...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...