conversions?

Subject: conversions? November 18th 2009, 12:22 pm

Is there a table, chart or a thread with info on liter to cubic inch conversions on here yet? We are having a debate over here on the mathmatical formula to figure that out and I cannot seem to find it....

you know, like how the GM 5.7l is equal to the 350 and stuff..... we are arguing over what the CI value is for a 6.8l V8. Anyone?

Admin Posts : 2938 Age : 38 Location : Taunton, MA

61 cubic inches in a liter. The debate comes from rounding. Because of the conversion factor of 10ths (as in 5 & 7ths liters) VS actual inches some overlap up to 6 inches can occur. For example, a Chevy 350 is a 5.7L, but so is a LS1 that displaces 346 cubic inches. As long as the tenths dont exceed 6 cubic inches, you can have two different cubic inch engines with the same displacement.

I'm assuming your 6.8L is the Ford V10 and I can tell you it displaces 415 cubic inches. I dont know of anyone making a 6.8L V8.

Subject: Re: conversions? November 18th 2009, 7:32 pm

No. GM has a new monster V8 in the Sierra pushing 408hp and we wanted to know what the displacement was. I just saw the commercial for it the other day.... now I could be wrong, you know GM better then most people, they may have said 6.2l V8... see now you have me doubting myself...... LOL

Moderator Posts : 1955 Age : 39 Location : levittown, PA

it is more then likely an ls1 powered seira..

Subject: Re: conversions? November 18th 2009, 7:45 pm

Its a 6.2l V8, 403 HP in the new GMC Sierra Denalli. Optional on the lower models.

http://www.gmc.com/sierra/1500/specsStandard.jsp

and appearently also uses that E85 crap, so I am no longer as impressed....LMAO

Moderator Posts : 1955 Age : 39 Location : levittown, PA

that e85 crap is what gives it its power.. it gives you an instant 10-15 hp after you convert it cause its a higher octane. its almost like a 93 octane and race gas mix..

Admin Posts : 2938 Age : 38 Location : Taunton, MA

The 6.2L is a 379 cubic inch engine and is a beast. There are a bunch of different engine codes for it but it is used in the Camaro, Corvette, Escalade, The Denali series, and the CTS-V, its a true work horse engine.

Joe, the LS1 was 346 Cubic inches (5.7L) and production stopped in 2004.

E85 is roughly 105 octane but it has a lower energy content and is more corrosive then Gasoline. Like all fuels it has its disadvantages and benefits. Just dont expect to see me using it.

Subject: Re: conversions? November 21st 2009, 8:45 am

i know 7.3 is 444.xx and 4.9 is 300
I think a 5.0 is = to a 302

Admin Posts : 2938 Age : 38 Location : Taunton, MA

johnboggs21 wrote:: 4.9 is 300
I think a 5.0 is = to a 302

See, that is a great example of rounding. 302/61= 4.94 but because Ford already had a 4.9L (the 300) they didnt want people getting confused, and called it the 5.0