Stock 350 hp and tq numbers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Southpa · 04-13-2006, 05:30 PM

You can get specific info from here. Engine suffix code should be stamped on a flange located on front pass. side of engine. A lot of changes were made between 70, 71 & 72yrs. Front discs, 5 lugs, as well as HP ratings. My 1970 350 suffix code (TBC) shows 255HP, was wondering why it was so high compared to later years (avg. 165 HP) and thought I had a special engine for a while.

Later I learned about the "gross" to "net" HP change over. Found more detailed reading here:

http://www.novaresource.org/rnrarchives02.htm

about half way down the page.

04-13-2006, 05:30 PM	#1
Southpa Registered User Join Date: May 2000 Location: Victoria, BC, Canada Posts: 2,409	Re: Stock 350 hp and tq numbers You can get specific info from here. Engine suffix code should be stamped on a flange located on front pass. side of engine. A lot of changes were made between 70, 71 & 72yrs. Front discs, 5 lugs, as well as HP ratings. My 1970 350 suffix code (TBC) shows 255HP, was wondering why it was so high compared to later years (avg. 165 HP) and thought I had a special engine for a while. Later I learned about the "gross" to "net" HP change over. Found more detailed reading here: http://www.novaresource.org/rnrarchives02.htm about half way down the page. __________________ 1970 GMC 1500 Custom Original 350/TH350 Victoria, BC, Canada You can wish in one hand and crap in the other. See which one gets filled first.



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