NOM devaluation
Melting Slicks
Joined: Apr 2001
Posts: 3,399
Likes: 278
From: Olmsted Falls, Ohio
I would have to think about what kind of motor is in there now. And if that would mean anything to me.
I'm not into NCRS correct cars, but I would wantt to know what else has been modified and it's value.
I'm not into NCRS correct cars, but I would wantt to know what else has been modified and it's value.
Safety Car
Joined: May 2008
Posts: 3,747
Likes: 713
From: Lafayette Louisiana
Agree with above, depends on what engine, on a base 350 about 5K delta. On a big block or LT-1, 10++K. Also if replacement engine is "ordinary" or something hp++. So for example, my crystal ball/guesstimate; base 70 convertible with NOM, +/-18, with original engine/4sp 22-25. Lots of variables, winter vrs summer, frame rust condition, options, color, 4sp or auto, location, and Luck, Ha!
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
NOM of a base motor is much less important than the same car with the L71 or LT1 engine missing. I don't think a 70 vert that had a 350-300 and now has a vortec or AFR head roller 383 is worth much if any less than orig. Unless we are talking REALLY orig. Same with LS5 car with a gen 6 502.
Drifting
Joined: Dec 2017
Posts: 1,663
Likes: 417
From: Central Texas
Burning Brakes
Joined: Jan 2010
Posts: 958
Likes: 88
From: Rexburg Idaho
Drifting
Joined: Dec 2017
Posts: 1,663
Likes: 417
From: Central Texas
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Administrator
Joined: Jul 2000
Posts: 53,976
Likes: 6,202
From: About 1100 miles from where I call home.
NOM of a base motor is much less important than the same car with the L71 or LT1 engine missing. I don't think a 70 vert that had a 350-300 and now has a vortec or AFR head roller 383 is worth much if any less than orig. Unless we are talking REALLY orig. Same with LS5 car with a gen 6 502.
While its true that not "every guy wants it," but that has nothing to do with market value. Some "guys want" oddball colors and goofy wings but it doesn't make the car worth more, it makes the incorrect cars a much, much better value for the guy who doesn't care about originality.
Le Mans Master
Joined: Mar 2004
Posts: 7,463
Likes: 1,485
From: Little Rock AR
Matching numbers means more for a rare 100 point car than it does for a more common base engine vette. Cant possibly be the same answer regardless of HP level. If I liked 2 base engine cars but only one had matching number engine it would not make much difference. I would not pay a $5,000 premium. Thats just crazy.
Thread Starter
Instructor
Joined: Mar 2006
Posts: 148
Likes: 2
From: Lake Mary FL
It sounds like the answer is about $5K on an excellent but not concourse level restoration. Hagerty estimates the value at $57K for an excellent car and $32.5 for a good car. The motor was a warranty replacement however the documentation from Chevrolet was lost.
Instructor
Joined: Sep 2017
Posts: 155
Likes: 32
I'd say personally 8k less with NOM. I value my 1969 350/350 at 28k. I think if it had NOM, i'd be more around 20k. IDK, it's just my opinion. On the other hand, my '56 T Bird, wouldn't really bother me that much if it had a NOM. I think it was because GM made such a big stupid deal over matching numbers on everything and it had just stuck with me as being important. I would definitely buy other vehicles with other engines, or LS swaps etc....
Melting Slicks
Joined: Apr 2007
Posts: 3,189
Likes: 111
From: Tolland CT
A local shop once said, rather cynically, the difference in value is the cost to obtain a restamped block and install. If numbers are important, best to be sure there's documentation to back it up, maybe hire an expert to look for evidence of a restamp.
Last edited by BBCorv70; Feb 10, 2020 at 11:15 AM.
Race Director
Joined: Mar 2016
Posts: 14,321
Likes: 8,124
From: Napa Valley California
I paid a couple thousand more for mine with everything numbers matching.
It was important to me because a numbers matching untouched car was what I was looking for so I did not have to worry about having to fix what others had done to the car before I owned it.
If it was a really nice resto/mod or the original engine had been replaced with another big block and the work was professionally done, I might have paid more.
I think the numbers matching concept, is more important to the buyer and he will pay more for his own personal reasons.
It was important to me because a numbers matching untouched car was what I was looking for so I did not have to worry about having to fix what others had done to the car before I owned it.
If it was a really nice resto/mod or the original engine had been replaced with another big block and the work was professionally done, I might have paid more.
I think the numbers matching concept, is more important to the buyer and he will pay more for his own personal reasons.