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Topic: 1972 454 Versus 1971 454

in Forum: C3 Engines


1972 454 Versus 1971 454

Posted: 1/2/03 10:55am Message 1 of 2
Former Member
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Joined: 5/15/2002
Posts: 50
I have a 1972 LS5 (454). Can anyone tell me what, if any are the differences between the 1971 454 and the 1972 454. They both have 8.5/1 compression ratio, but are vastly different in their horsepower rating, 365/270. Any information would be greatly appreciated. Thanks, Jimmie


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1972 454 Versus 1971 454

Posted: 1/2/03 7:23pm Message 2 of 2
Former Member
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Joined: 9/29/2002
Posts: 26
Vette(s): 1972 vert. ZR-1
First thing is that in 72 they changed how hp was rated, 2nd there was a little more anti-smog equip't put on the 72 so if you compared apples to apples the gross hp would be just a little less in 72 from 71.


in Forum: C3 Engines


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