P1800ES

Yes, these are highly desirable collectible cars among Volvo aficionados. The prices are not up there with some of the other European cars but a nicely restored example will fetch a fair amount. If you do a really top notch hot rodding job it could be a cool car, I'm into the stock look myself though.

The cars are valued higher than other Volvos of similar years, but I wouldn't approach this car with an idea of fixing it up and making money.

Sounds like it needs a lot of work and time to sort it out, and there are better cars out there to fix up and flog on the market, IF your desire is to make money.

BUT, if you like the car and plan to keep it as a driver, go for it.

Hot rodding it would be OK, as people have been putting small block V-8s in 240s forever.

Here's a link you might find useful...

In factory spec condition yes.

It would not be a travesty, and could result in a fun and useful car. But it would have value only as a parts car for Volvo collectors.

Whether to do it or not reallly depends on your reasons for getting into this. If you are looking to build a sleeper hot rod that you can have some fun with then go ahead.

The resulting car will have value only to those with an interest in Volvo P1800ES cars with high performing Honda motors. Even in pristine rebuilt condition I don't see a car like that appearing on Barrett-Jackson.

I generally agree with the other replies. The S2000 motor might not be such a great idea, though: IIRC this engine has to really scream to make a lot of power, and in a heavier car like the ES it might actually seem slower than the B20E motor in normal driving. I say get the most power from the Volvo engine.