What was the last year for the slant?

Palmetto what are you working on/planning to do, why specifically are you looking for the last of the Slant 6's?

and RaniDart70 ,the ratings did change in 1972. The '71 225 Slant Six was rated at 145HP/215 LB-FT of torque and the '72 225 Slant Six was rated at 110HP/185 LB-FT of torque but the difference had to do more with the amount of parasitic loss from the underhood accessories the engine had to move such as, water pump ,fan blade, powersteering, alternator etc not from rear wheel ratings. I can tell you that my '72 Valiant with the 225 slant 6 dynoed at the rear wheels to the tune of 79HP and 140 LB/FT of torque and before you go saying that is low...the car is no slouch (considering the Slant 6..LOL) it ran 17.8 at 75MPH in the 1/4 mile so if you are correct where is the other 30HP that I theoretically am supposed to have. By the time the awesome Slant got through turning/moving all the underhood accessories and the rear wheels it lost about half of its gross HP rating, well at least in my case! Its still a torque monster:cheers: