Skip the auto shop - Our mechanics make house calls

Q: my engine went out in m camaro and im wondering could i ut a 5.3l engine out of a tahoe or silverado or impala ss in replace

asked by on

will i have to change the trans to put a bigger engine will a 4.8l v8 in i dont really want anoter v6 in it doesnt hold enough power and couldnt i make a harness myself wouldnt it be cheaper?

A: It is probably "possible" to re-c...

It is probably "possible" to re-configure the mounts, axles, drivetrain, suspension and so forth in order to accommodate an engine other than the one the car was designed for. You would have to add to that workload though, the need to integrate the engine computer that runs the substitute engine into your car's electrical system, not to mention the transmission control module. You would obviously have to completely change out the exhaust system as well. Depending on the state you live in there might be some emissions, registration, and inspection ramifications.

Typically, custom built vehicles have to be inspected by the Highway Patrol before they can be registered. Finally, you will have trouble insuring the vehicle because it essentially would not correspond at all to the VIN number that you have to supply to your agent to purchase insurance. They probably will refuse to insure it as a passenger vehicle because it simply is not the vehicle that the factory sold as the VIN you would be declaring. Were they a loss, they would refuse to pay because the VIN does not "match" the insured vehicle.

With regard to the transmission, you are absolutely right. Transmissions are rated for the maximum horsepower that they can handle before they basically fall apart. Assuming the transmission for the v-6 even fit the proposed engine, the v-6 transmission might not be rated for the horsepower that that v-8 engine could develop. You could definitely, with enough advance planning and engineering knowledge, make the proposed swap, but as far as the result being practical as a street legal passenger car, that is doubtful. Also, the cost will be substantial, exceeding by orders of magnitude the cost to rebuild your existing engine or buy a crate engine.

You are way better off carefully rebuilding what you have and learning from that experience and moving onward and upward from there. If you need assistance with the engine removal and replacement, this is something that YourMechanic could help you with in terms of getting you in touch with local experts who have already gone down this road before and have the experience to do it right. Best wishes with are a very enterprising, ambitious person with good questions!

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・Save up to 30%

Get a quote

What others are asking

Q: Need help removing instrument cluster from the dashboard

First of all, the factory service information warns against unintentional airbag deployment when replacing the instrument cluster, so I highly recommend you have this task performed by a professional. If you decide to tackle the job yourself, make sure to...

Q: Sqealing noise EPC light

Hello. It sounds like it may have a failing alternator. If the alternator is failing or if the belt is loose due to a bad belt tensioner then this will occur. I would check and see if the belt is...

Q: Jerking when accelerating - 2006 Kia Rio5

I would take the vehicle back to where the oil and transmission work were done immediately to have them check it out. It's possible the car wash put water in places it should not be in the engine compartment. On...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.