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Blazer1970 · 01-04-2004, 10:38 AM

For '70 and '71, the 4 bbl 350 truck motor was rated at 255 gross hp. For the '72 model year, GM changed their hp ratings from gross to net , and the same motor was rated at 175 net hp.

01-04-2004, 10:38 AM	#8
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	For '70 and '71, the 4 bbl 350 truck motor was rated at 255 gross hp. For the '72 model year, GM changed their hp ratings from gross to net , and the same motor was rated at 175 net hp. __________________ Tim