No, the Hemi is a 426.
the 426 hemi is the best and only true hemi, these new so called hemi engines are really not true hemi's.
Hot Rod magazine added 259hp with a 8-71 to a 426 crate motor- 753hp
The 426 Hemi developed 425 H.P. The 440 developed 390 H.P. They both developed 490 lb/ft of torque. Installed in the same body with the same gear ratio and same transmission the 426 Hemi will be faster.
426 hemi
The # 1 position on the distributor cap of a 1970 - 426 Hemi : faces to the front and slightly towards the passenger side
426 pounds
480 pounds
a 426 hemi.
sure, it will fit as the hemi was an option on the 71 challenger but back in 71 you had to get the R/T to get the hemi.
Chrysler 426 Hemi engines can be purchased from a number of online stores. Amazon, eBay, Craigslist, and the official Chrysler website, for example, each sell this item.
375 horse with the 440 engine and 425 horse with the 426 hemi.