Suggest some hard rocking stuff I may not be aware of

[Breakfastime]

Trapeze 'Medussa' is one that was 'old' when we were kids but it sure sounded cool

Iggy and the Stooges 'Raw Power' is a brutal metallic sleaze-fest

Rory Gallagher 'Stage Struck' just overflows with burning hot guitar

Pink Faries 'Kings of Oblivion' was another 70's favorite that i didn't discover until the 80's

as was Dust who made two albums that are obscure but cool

Not as obscure is Jeff Beck group 'Truth' and 'Beck-Ola' if you haven't heard these, you're in for a treat

[Jay G]

Might want to also check out Uriah Heep.  Sometimes can be prog other times similar to Purple.  Some stuff like July Morning and Easy Livin are quite heavy.

[maybeyes]

Check out a band called Crack The Sky - Animal Notes and Safety in Numbers as well as the self titled debut are good.  Sort of a prog hard rock band.  I really enjoy them and have quite a few of their albums, but AN and SiN are the ones that continually find their way back to the turntable.

Streetheart was a pretty good Canadian band as well.  First album released late 70's.  My fave Drugstore Dancer came out in 81. 

[pprovost]

Rory Gallagher 'Stage Struck' just overflows with burning hot guitar

  Damn right!!

I would add:

Johnny Winter - Captured Live - Johnny is SMOKIN!!
Triumph - S/T, Rock N' Roll Machine, and Progressions of Power - Emmett kicked ass on these early albums
Blackfoot - Strikes - Train, Train and Highway Song are on this... nuff said
Ted Nugent - S/T - Among Ted's best work
Moxy - Ridin' High - Kind of if you took early Aerosmith and put Brian Johnson on vocals
Sweet - Desolation Boulevard - Tons of great guitar from a band trying to move out of the pop band image.
Bachman Turner Overdrive - Four Wheel Drive - This and Not Fragile have some of the heaviest riffs ever.
Mother's Finest - S/T and Another Mother Further - Funk Rock with lots of guitar
Al Di Meola - Elegant Gypsy - Jazz Rock Fusion guitar at it's best. Al is just ridiculously good.
Al Di Meola, John McLaughlin, and Paco DeLuca - Friday Night in San Francisco - You will sell your guitars after listening to this.
Aldo Nova - S/T - Poppy, with lots of guitar
Early Heart - Their early stuff is easily their best
Early Pat Benatar - Neil Giraldo burns it up on the early stuff
Nazareth - Snaz - Nazareth sounded much fuller and tighter live. Manny and Billy Rankin are GREAT!
Pat Travers - Go For What You Know - The album that made Pat famous.
Robin Trower - Bridge of Sighs - If you like Trower, this is in his top two or three.

Oh, and forgot one from the early 70s, Focus - Hocus Pocus - Jan Akkerman was never better.

[guitarrednfeathered]

Rory Gallagher 'Stage Struck' just overflows with burning hot guitar

 Johnny Winter - Captured Live - Johnny is SMOKIN!!

    All things Johnny Winter are smokin! 

[Isaac]

That's cool Isaac, but he wants hard rock from the early 70s.

Oops. Totally missed that 70s part.  My bad.

[T-MAN]

EugenicScum had some great suggestions...Lucifer's Friend is a cool band.

http://www.youtube.com/watch?v=b5DpOdf-_yM

[jebbudda]

Every Dino needs to own a copy of Deep Purple Machine Head and Made in Japan .

I'm also a big fan of Robin Trower . Bridge of Sighs is a must have .

Get your hands on some Pat Travers too .

Lets not forget Frank Marino ....The Live album rules .

[Sancho]

Every Dino needs to own a copy of Deep Purple Machine Head and Made in Japan .

And Burn. Definitely Burn.

[otcconan]

RUSH.  Everything they did in the '70's.

End of lesson.

[Isaac]

RUSH.  Everything they did in the '70's.

End of lesson.

Seconded. Rush's 70s output is some of the greatest rock ever recorded IMO.