Question on car values

[blown motor]

If you have a numbers matching car and you stroke the engine it will have more HP but it is no longer factory original. Does that have a positive or negative effect on the car's value? Just curious.

[ToxicWolf]

Is the engine numbers matching to the car?

[ec_co]

the important part is the #s matching drivetrain. you can always destroke it, but you can't replace the original factory installed block.

[blown motor]

Is the engine numbers matching to the car?

Numbers matching as stated.

[ToxicWolf]

Numbers matching as stated.

Gotta learn to read. 

Just hang onto the original parts you replace and it should be fine.  As far as price going up or down because it is stroked, that will depend on who buys the car.  Some people will like that it is stroked and some will see it as work they have to do to get it back to original.  An original car, to me, always is more valuable.   

Of course there are exceptions.   

[69ChargerRT]

when I was looking for my charger and challenger, I only cared about numbers matching on the block and trans.  challenger was mostly original, but my charger had quite a few mods to it.  that was all fine by me, long as the numbers were there

[burdar]

I don't think it will affect the value in a negative way for most cars.  It all depends on the year and how valuable the car is to begin with.  A 72-74 car might actually "gain" value.

[Bart]

What I did with mine I pulled the motor and trans set it aside, find another motor/trans build what you want have fun.......

[69ChargerRT]

What I did with mine I pulled the motor and trans set it aside, find another motor/trans build what you want have fun.......

yeah that's always a good way to go too

[anlauto]

No harm done whatsoever

[blown motor]

I'm not planning on doing it, I just tought of it and was curious what everybody thought.

[BS27R1B]

Modifying any original engine can be a risk to future value. Most times you modify to improve performance and this could lead to testing the limits of the engine.
Take an original block out, set it aside and build what you like.
When it comes to stroking an engine you could have to notch the bottoms of the cylinders for clearance. I personally would not like to buy an original block that has been modified in this manner.

[HemiOrange70]

 

Modifying any original engine can be a risk to future value. Most times you modify to improve performance and this could lead to testing the limits of the engine.
Take an original block out, set it aside and build what you like.
When it comes to stroking an engine you could have to notch the bottoms of the cylinders for clearance. I personally would not like to buy an original block that has been modified in this manner.

 
Numbers matching people like stock, especially if your talking rarer cars like 440 cudas etc. Buy a non #'S block and do whatever you like, but in my opinion, you hurt the overall value modifying the #'s motor

[74 challenge]

I personally do not see the issue with it since it is the original block. What would concern me is the more you modify the engine the higher the risk of failure. So for me personaly the route would be mothball the original engine and throw one in there you can thrash around.

There was a 69 Shelby(I think I'm not a Shelby expert) in my area for sale years ago that was being sold with the cracked but original block to the car on the side, with a non numbers matching block in the car and it still held strong value because at least the engine existed.