Chevy 8.1

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Apr 3, 2008 | 09:44 AM

#76

HarleyFXDL

Senior User

Joined: Mar 2008

Posts: 171

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5.93L = 361.870 cu. in. This does not include the volume of the heads.

Apr 3, 2008 | 09:46 AM

#77

HarleyFXDL

Senior User

Joined: Mar 2008

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Here is the site to convert Liters to CID

Liters to Cubic Inches conversion calculator - Volume conversions

Apr 3, 2008 | 12:41 PM

#78

birddog16

Senior User

Joined: Nov 2004

Posts: 273

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GM 2005 Powertrain here is a link to gm power guide. find the L18. the interesting part can be found under the preformance plot under silverado HD. I don't recall seeing a tq curve that flat for a gas engine in a long time.

Apr 3, 2008 | 06:45 PM

#79

pagnew

Senior User

Joined: Jun 2007

Posts: 224

Likes: 0

From: West Michigan

Quote:

Originally Posted by HarleyFXDL

Here is the site to convert Liters to CID

Liters to Cubic Inches conversion calculator - Volume conversions

Thanks - I can now say my 5.0 stang is really a 4.95

Maybe the volume of the heads will make 'er a true 5.0 - I don't know

Apr 3, 2008 | 09:23 PM

#80

HarleyFXDL

Senior User

Joined: Mar 2008

Posts: 171

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Quote:

Originally Posted by pagnew

Thanks - I can now say my 5.0 stang is really a 4.95

Maybe the volume of the heads will make 'er a true 5.0 - I don't know

That's what it is. You need to account for the volume of the heads as well.

Apr 3, 2008 | 09:36 PM

#81

pagnew

Senior User

Joined: Jun 2007

Posts: 224

Likes: 0

From: West Michigan

Quote:

Originally Posted by HarleyFXDL

That's what it is. You need to account for the volume of the heads as well.

Cool...Thanks - never knew that

Apr 4, 2008 | 10:31 AM

#82

GVS

Senior User

Joined: Nov 2003

Posts: 221

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Quote:

Originally Posted by HarleyFXDL

That's what it is. You need to account for the volume of the heads as well.

Don't think so.

Apr 4, 2008 | 12:59 PM

#83

akford351

Posting Guru

Joined: May 2002

Posts: 1,589

Likes: 1

From: AK

Quote:

Originally Posted by GVS

Don't think so.

I don't think so either... isn't engine size the bore x stroke x # cylinders.

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Apr 4, 2008 | 02:02 PM

#84

Richard_cranium

Junior User

Joined: Feb 2008

Posts: 59

Likes: 0

According to ford my 6.8L V10 is 415 ci. According to the calculator it is 414.96 so there is no added calculation for the head.

Apr 4, 2008 | 02:05 PM

#85

pagnew

Senior User

Joined: Jun 2007

Posts: 224

Likes: 0

From: West Michigan

Quote:

Originally Posted by akford351

I don't think so either... isn't engine size the bore x stroke x # cylinders.

As far as engine size I know that my engine size is 302 (4.9ishL). I don't really know if the added volume in the heads (dish above the cylinder) when bolted on would make it a '5.0'. Interesting thought I guess. But as stated on my part - I don't really have a clue on that. So....cheers to y'all too!!

Apr 4, 2008 | 03:43 PM

#86

scottman70

Posting Guru

Joined: Oct 2006

Posts: 1,714

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Quote:

Originally Posted by HarleyFXDL

That's what it is. You need to account for the volume of the heads as well.

Not Correct, head volume has nothing to do with figuring displacement. Stoke & Bore............

Follow the LINK:

Engine Design Equations Formulas Calculator Cubic Inch Displacement Bore Stroke

Apr 4, 2008 | 04:40 PM

#87

capn kirk

Posting Guru

Joined: Dec 2006

Posts: 1,118

Likes: 1

yeah alot of it is marketing...chevy sells a 5.7 350 so ford makes a 5.8 351...numbers dont always match the tags in the brochure

Apr 4, 2008 | 05:53 PM

#88

HarleyFXDL

Senior User

Joined: Mar 2008

Posts: 171

Likes: 0

Well I couldn't figure out where the loss of displacement came from and I assumed it came for the heads. I very well might be wrong.

Apr 6, 2008 | 07:23 PM

#89

capn kirk

Posting Guru

Joined: Dec 2006

Posts: 1,118

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my best understanding is the the CI size given is usually close to correct but the liter measure that is put out has alot of marketing involved

Apr 7, 2008 | 07:29 PM

#90

bigrigg1

New User

Joined: Dec 2007

Posts: 13

Likes: 0

i drive an 02 V-10 for fun and drive an 8.1 at work, i think the Ford is a little quicker off the line and i know i like the Ford for the mileage. (about 13 w/ the v- 10 and 6 or 7 EMPTY w/ the 8.1)