422 or 423ci

[wadesfarm1]

I am building a 4.110 bore 3.98 stroke fe, I was just wondering what 422.42ci should be rounded off to so I can write it on my car.

[Heo]

Well its closer to 422 than 423 ....but Nortons 850 was 820
So i gues you can go up to 500 even

[Drew Pojedinec]

Call it a 428

[427LX]

390..then you will be a legend among your friends!

[wadesfarm1]

390..then you will be a legend among your friends!

But they know what I am doing and there saying 'why'

[fastback 427]

Call it a 352 police or a 332 cj. When they ask why tell them so the chevies can keep up

[Joe-JDC]

For rounding purposes, it is closer to 422, and would be called 422.  Having said that, some places require that any part of a cubic inch above a whole number must be rounded up to the next number, ie. EMC rules.  Technically you have a 422 cubic inch engine, but if you were to enter it in EMC competition, you would have to declare it as 423 cubic inches.  Actually, what you have is a 410 that is +.060".  What do you want it to be?  That is the real answer.  Joe-JDC

[wadesfarm1]

For rounding purposes, it is closer to 422, and would be called 422.  Having said that, some places require that any part of a cubic inch above a whole number must be rounded up to the next number, ie. EMC rules.  Technically you have a 422 cubic inch engine, but if you were to enter it in EMC competition, you would have to declare it as 423 cubic inches.  Actually, what you have is a 410 that is +.060".  What do you want it to be?  That is the real answer.  Joe-JDC

423 it is Thanks.

[tomsfe64]

I personally like to use the original cubic inch designation so people know what it came from.. such as a 427 fe. It's more informative to know it's a 427 than 430 etc.

[ScotiaFE]

I call them all 390ish. 

[Lenz]

My 445 car wears 390 badges.  I replaced the 427 badges that were on it to stop purists from looking for evidence of cross bolted mains.  Now, the only problem I have is what to do about the "X" (352) in my VIN or the fact that I'm running a toploader in place of the original automatic .  In the end, I say call it what you want to.  When you essentially assemble your own that's how it should be anyway IMO.

[ChiefDanGeorge]

Can you get Mileage Maker Six badges?
That would really confuse people.

[Tommy-T]

When I had a .030 427 block and a 428 crank in my Mustang it was a 454 incher.

When guys would ask how big my motor was I'd say "60 over 390".

They didn't realize I meant 60 cubic inches bigger.

[Drew Pojedinec]

Right on Tommy....
plus if you said it was a 454, someone certainly would have spouted off about how "You got some common sense throwing a Chevy engine in dat car."

[wadesfarm1]

Thanks for all the idea's, i'd post a picture but that's not working. 64 galaxie convertible x code.