Value of a 1970 440 Roadrunner originally born with a 383

[cegaither]

Hey Guys. What is the value/impact of a 440 375hp engine on a 1970 Roadrunner that was born with a 383 330hp?

 

[cegaither]

Hey Guys. What is the value/impact of a 440 375hp engine on a 1970 Roadrunner that was born with a 383 330hp?

 

[eldubb440]

sweet car! if the original 383 is gone, a 440 is a nice upgrade......it won't hurt it

 

[Jerry Hall]

For numbers guys it's a no-no. In the day it was an acceptable upgrade and still is.

 

[YY1]

The value is that of a 383 RR without it's original engine plus 50% of the retail value of the 440 and it's parts.

 

[Rusty knuckles]

Just sold one here yesterday on an auction for 50k. Looks very comparable. Not sure you'd get there in a private sale as auctions tend to have folks get crazy.