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rocketman
Joined: 15 May 2008
Posts: 6
Location: Ontario,Canada
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| Posted: Mon May 19, 2008 3:43 pm Post subject: found the cowl/body tag |
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Well found the cowl tag and need help understanding it.
ST71-34257Z06559
TR977B80 67E PNT
04E 286321
320343
Also got this number off the engine will this tell the horsepower
395558. And a number 7 of the head .
Any info would be a great help.
Thanks |
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88 Coupe
Joined: 15 Feb 2004
Posts: 2985
Location: Southern California
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| Posted: Mon May 19, 2008 8:40 pm Post subject: Re: found the cowl/body tag |
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Hi rocketman,
Welcome to TOC.
For your cowl tag codes, go here. One of the handiest tools you will ever use.
395558 = block casting number, used for 350 CI engines, from '68-'72. Your '71 is defined by, how was machined and the parts that were used in its assembly.
# 7 = head casting number, used for 350 CI engines, only in '71.
Advertised HP for the '71 Olds 350:2 barrel carb = 155 BHP 4 barrel carb = 180 BHP
Be aware, that factory HP numbers did not necessarily match the actual power output.
Norm |
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rocketman
Joined: 15 May 2008
Posts: 6
Location: Ontario,Canada
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| Posted: Tue May 20, 2008 8:11 am Post subject: Re: found the cowl/body tag |
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Thanks 88 Coupe
What do you mean by.
Be aware,that factory HP numbers did not necessarily match the actual power output. My Cutlass has a 4 barrel carb.
Dan |
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88 Coupe
Joined: 15 Feb 2004
Posts: 2985
Location: Southern California
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| Posted: Wed May 21, 2008 12:50 pm Post subject: Re: found the cowl/body tag |
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There were several reasons. Some were related to casting, forging, and machining during production. This could account for, as much as, a plus or minus 10% difference between two "identical" engines.
Starting in the early fifties, the numbers began to reflect marketing needs rather than actual power output. It got pretty outrageous by 1970, but the excesses stopped, right after that, when the Federal Government set testing guidelines.
Norm |
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Brianritchie21787
Joined: 07 Feb 2004
Posts: 270
Location: Tolland, CT, USA
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| Posted: Mon May 26, 2008 1:07 pm Post subject: Re: found the cowl/body tag |
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| were those numbers taken at the flywheel or somthing? its not really uncommon for a car company do that these days either. My sentra is rated at 125, according to nissan... but only makes 100 at the wheels. :blush: |
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88 Coupe
Joined: 15 Feb 2004
Posts: 2985
Location: Southern California
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| Posted: Mon May 26, 2008 11:07 pm Post subject: Re: found the cowl/body tag |
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Brianritchie21787 wrote: were those numbers taken at the flywheel ........
Yes. An engine dyno is used to determine an engines power output.
Brianritchie21787 wrote: ........ My sentra is rated at ........
By definition, "rated" says that the figure is an estimate. It may or may not be accurate.
Brianritchie21787 wrote: ........ 125, according to Nissan ........
Likely within a couple of HP of your engine, when it was installed.
Brianritchie21787 wrote: but only makes 100 at the wheels.
Numbers vary, from car to car, but a 20% power loss between the crank and the ground, seems reasonable.
Norm |
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