How do you figure Blue Book value with updated engine?
 

I'm still looking at a '77 911S Targa to buy. A low mileage (under 100k) 3.0 engine was installed which runs strong and smooth. So how do you figure the value of the car, in relation to the Blue Book with the 3.0? Thanks...J.R.

Without the original engine, the blue book at most should be the same and most likely lower then the same car with the original engine. The methods and care a new engine is installed can't be expected to be the same as the factory which would explain the lower value. Doesn't mean there aren't good cars with new engines.

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8 9 9 1 1, The last of the line.

I find it hard to believe that the value of a 2.7 car would be less with a good 3.0 engine in it unless it was a show car. Help me to understand why!! J.R.

I had similar experience. The financial institution TOTALLY disregarded freshly rebuilt engine ( I mean 100 miles on the rebuilt engine) in figuring out the BB.

Go figure!

Sorry for the the bad confirmation. Just sharing my experience!

I would agree. It's like a house with a swimming pool: it cost you $XX,000 to install, but many buyers consider the pool to be a liability. I keep telling people that I spent $60,000 to build a $20,000 car, because that's all my 1983 SC will ever be worth, despite all the mods and improvements. A friend of mine just went to look at a clean '82 SC that was advertised for $9,000, which sounded like a bargain. He took one look at it, saw that it had an '87 engine and offered $5,000. The car remains unsold.

Stephan