Numbers matching and value

[Ghoste]

When it comes to the truly rare, cars that number less than a 100 produced let's say, what percentage do you think having a replacement engine hurts them?

[el dub]

I would think it would hurt plenty. Non original after that, but what do I know. I don't think a rare car would have been driven enough to need a new motor though. Unless it was a racer.

[polywideblock]

think a lot of the rarer ones were race cars or bought to be raced  and quit a few would now have replacement motors 

see it on "what's my car worth " all the time "replacement date coded engine "  as to value   

[Ghoste]

But some opinions as to a percentage?

[dyslexic teddybear]

It will be interesting to hear the answers......I am curious what others think.

At one time "matching" would have been very important to me. Unless it's a "survivor" or somewhat close.....not so much now.

If half the frame/sheet metal has been replaced.....not sure the original engine makes much difference.

[birdsandbees]

Did a warrantee engine get the VIN stamped on it or was the pad left blank?? 

[skip68]

They are blank.  I had one with no stamping

[Chad L. Magee]

It depends on what the car was and what has been put into it to replace the missing equipment.  My guess would be in the 20-25% range if not original engine and transmission, less deduction if only one is missing, if an equivalent (date coded) replacement is installed to match the factory stuff.  There are exceptions (upgrading), like if someone put a nice 426 hemi in place of where a 440-4bbl originally came in an RT.  Same can be said of 440 six pack stuff.  Some buyers would pay more for that, not less...   

[69 OUR/TEA]

You're talking a small number , 100 or less cars , that is just not the norm . If that car still exists , it's valuable just to be here , numbers matching or not . But for me ,  IMO , cars like our 69 Charger R/T , Coronet R/T , Challenger R/T , etc , doesn't get hurt all that much by being matching or not . A non matching R/T is still more valuable than a R/T clone sitting right beside it .
Now , again , IMO , the cars that get affected more  are , I would say are the " unique cars" , Hemi Charger/Cuda/Challenger , A12 cars , and the AAR/T/A's . Especially the T/A 340 motors as they are made/cast " 340 T/A" and are diff from the reg 340's , and their special heads/rockers as well .
I have followed AAR's for awhile , and have seen non matching compared to matching has had ranging values of $20-30k difference .
My 3x9 R/T SE is not matching numbers ( engine , trans is ) , and really doesn't bother me . If someone surfaced with my orig block , I wouldn't be held over the fire for it , might pay couple thousand for it , but that's it .
Of the cars I've had/restored , at the shows/cruises , never had anyone ask me if they were matching numbers .

[triple_green]

I agree with Chad,

On a super rare, low numbers produced.