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#1 |
Registered User
Join Date: Aug 2009
Location: Tomball, TX
Posts: 578
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horsepower?
does anybody know what the factory horsepower/torque rating was for the '68 350 with a quadrajet?
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'68 C10 LWB 6.2NA/NP833 3.73's |
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#2 |
Senior Member
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Location: Austin, TX
Posts: 1,079
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Re: horsepower?
IIRC, for 1970 it was 255hp net 300hp gross, and 300lb-ft net, 350lb-ft gross,
according to Chevy's sales brochure, but I'm not exactly sure. but IIRC thought that 350's weren't available until '69, are you sure you don't have a 327???
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-- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted |
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#3 |
Registered User
Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,269
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Re: horsepower?
350 was a camaro thing until 69 right? Jim
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#4 |
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Location: Austin, TX
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Re: horsepower?
that's what I was thinkin'!!
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-- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted |
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#5 |
Registered User
Join Date: Nov 2008
Location: Bernardsville, NJ
Posts: 164
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Re: horsepower?
Here is a picture of my Brouchure for GMC Truck engines
350 V8 9 to 1 compression 255HP gross at 4600 RPM 195HP net at 4000 RPM 355 # torque gross at 3000 RPM 305 # torque net at 2400 RPM |
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#6 | |
Registered User
Join Date: Aug 2009
Location: Tomball, TX
Posts: 578
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Re: horsepower?
Quote:
this may be a stupid question but what's the difference between gross and net horsepower?
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'68 C10 LWB 6.2NA/NP833 3.73's |
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#7 |
Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,134
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Re: horsepower?
Gross is an ideal HP with minimal accessories and no trans/rear drag. Its the hp at the flywheel under optimal conditions with headers no air cleaner or power draining accessories.
Net is with all the accessories, air cleaner , stock exhaust and is the more realistic of on the road daily driving HP measured at the flywheel. |
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#8 |
Senior Member
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Location: Austin, TX
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Re: horsepower?
that, I believe, is what my '70 chevy brochure says, or pretty close to it
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-- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted |
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#9 | |
Senior Member
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Location: Austin, TX
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Re: horsepower?
Quote:
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-- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted Last edited by americanmusc1e; 12-01-2009 at 11:59 AM. |
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#10 |
Registered User
Join Date: Aug 2009
Location: Tomball, TX
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Re: horsepower?
where's the casting number located on the engine?
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'68 C10 LWB 6.2NA/NP833 3.73's |
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#11 |
member #16
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Re: horsepower?
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john http://67-72chevytrucks.com/vboard/showgroups.php board vendors ![]() http://www.flickr.com/photos/1745471...7602865984234/ |
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#12 |
Registered User
Join Date: Aug 2009
Location: Tomball, TX
Posts: 578
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Re: horsepower?
ok I found the casting number, 3970010, I plugged it in to a couple different site all I could find was it was a 1968 327 or a '69-'79 350, I also found next this next to it, 39GM, I have no idea what that means, any help?
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'68 C10 LWB 6.2NA/NP833 3.73's |
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#13 |
Senior Member
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Location: Austin, TX
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Re: horsepower?
try the heads, sometimes they will help you narrow it down.
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-- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted |
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#14 |
Registered User
Join Date: Aug 2009
Location: Tomball, TX
Posts: 578
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Re: horsepower?
you mean the one inside the valve covers?
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'68 C10 LWB 6.2NA/NP833 3.73's |
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