Skip the auto shop - Our mechanics make house calls

Q: Can I put an XLR v engine in my 2001 caddilac deville. I want more power out of my big caddy.

asked by on

I want to do an engine swap with my deville. I want more power and I want to see if I can swap out the 4.6 liter 275 hp v8 out with a 4.4 liter 443 hp engine from an xlr v. Can this be done? I want to turn my big boat into a power hungry beast that is not too loud. If I can't do the engine swap can you tell me how to add at least 150 hp to my Northstar v8.

My car has 180000 miles.
My car has an automatic transmission.

A: The XLR-V motor is in fact a Northstar type...

The XLR-V motor is in fact a Northstar type engine, so yes it should work, but it will be very expensive. The engine alone will cost quite a bit, and you’re gonna need to run the wiring harness for the XLR as well. There will no doubt be other hurdles along the way. You could also consider supercharging the motor already in there, but you would need to upgrade the fuel system. In either case, with 180,000 miles putting an extra 150 HP to your transmission is asking for failure, so you should upgrade the transmission, axles, suspension, and brakes to help deal with all the extra power. If you need some assistance with these components, consider YourMechanic, as a certified technician can assist you with the necessary upgrades to your vehicle. Good 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 cut off the roof

If you still have the windshield and install a roll bar then you should not have a problem, but if I were you I would check with local ordnance to make sure it is legal.

Q: Car wouldn't go and all of the warning lights came.

Hi there. Either the timing belt came off or the crankshaft position sensor could have failed. Remove the valve cover and crank the engine over. If the engine crank turns and the valve train moves, then the timing belt is...

Q: Overheats When Blowing Warm With Heat & AC But Not When Blowing Cold AC

Hello, thank you for writing in. There are so many different codes being triggered, that it is unlikely all of these systems are having issues at once. We need to focus in on the fact the engine is overheating at...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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.