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Dumb Question Here - Are the 6.1's 370 ci?

7K views 24 replies 15 participants last post by  MrDolomite  
#1 ·
Are the 6.1's 370 ci?
 
#2 ·
I dunno and come to think of it what is the displacment of the 5.7's I wanna have it pinstriped on the side of my shaker.

sorry to kinda hijack but sum1 will most likley answer both:)
 
#6 ·
TY
 
#5 ·
the formula is liter x 62 i believe
 
#15 ·
according to your math formula its abotu 378ci which is a little off, but it should be close. More like a 60.66 * Liters

according to my math 60.66 * 6.1 liters = 370ci

R/T 5.7liters * 60.66 = 346ci

its close to that lol
 
#9 ·
any other forum give ya 7 answers in ten min?
 
#12 ·
I heard it'd 350/370 5.7/6.1
and 62 would be rough cuz that would come to roughly 60.6 per liter on the 6.1L.
Not trying to call you out, just saying it's not that reliable. and 60.6 isn't reliable either because it wouldn't match up on the 5.7L comes out to 61.4.
So there has to be some other way, or just that it's a matter of the engines maker.
 
#16 ·
Here are the ones I KNOW and I've used them to calculate a mulitplier for others. Some of these are "old school" engines I already know: (sorry no Mopars, my engine experience is with boats which were mainly Chevy based)

Chevy 305 5.0
Ford 302 5.0
Chevy 350 5.7
Ford 351 5.8
Chevy 454 7.4
Chevy 496 8.1
Chevy 502 8.2
 
#18 ·
I've been wondering the same thing about cubic inches vs. liters for decals, badges, etc.

According to google's calculator - http://www.google.com/search?hl=en&q=6.1+liters+in+cubic+inches&btnG=Search

6.1 liters = 372.244839 cubic inches
5.7 liters = 347.835341 cubic inches
3.5 liters = 213.583104 cubic inches
2.7 liters = 164.764109 cubic inches​

But I have seen the 6.1L referred to as a 370 or 372, and the 5.7L as a 345 or 347. And since I haven't been able find a definitive source at dodge.com, I'm still up in the air about how many cubic inches to use. I'll prolly just use liters. :eek:
 
#19 ·
#24 · (Edited)
Ok, at least on the web, 6.1L = 370 cu in
The best way is to take the bore and stroke of engine and calculate the cubic inches.

it's ((bore/2)*(bore/2))*pi*stroke*#_of_cylinders

so the 5.7 HEMI has a bore of 3.917" and a stroke of 3.578"

((3.917/2)*(3.917/2))*3.142*3.578*8 = 344.972 Cubic Inches = 5.65 liters

The 6.1 HEMI has a bore of 4.055" and a stroke of 3.578"

((4.055/2)*(4.055/2))*3.142*3.578*8 = 369.71 Cubic Inches = 6.058 liters
This is good info ^^^

Remember that 5.7 and 6.1 are approximations, so if you're using that as the starting point for the calculations, you'll be off from the start. 6063ccm (or 6059) does not equal 6.1L precisely.

EDIT: But yes, the 6.1L is generally accepted to be a 370ci, as the 5.7L is a 345 (or 346).
 
#20 ·
The best way is to take the bore and stroke of engine and calculate the cubic inches.

it's ((bore/2)*(bore/2))*pi*stroke*#_of_cylinders

so the 5.7 HEMI has a bore of 3.917" and a stroke of 3.578"

((3.917/2)*(3.917/2))*3.142*3.578*8 = 344.972 Cubic Inches = 5.65 liters

The 6.1 HEMI has a bore of 4.055" and a stroke of 3.578"

((4.055/2)*(4.055/2))*3.142*3.578*8 = 369.71 Cubic Inches = 6.058 liters
 
#22 ·
#23 · (Edited)
CID (Cubic Inch Displacement) for 6.1L 5.7L 3.5L 2.7L engines

Here's an official answer from Chrysler, and I found it right on my window sticker, over on the right side in the fuel economy box. I checked a dealer new inventory for online window stickers and filled in all the current engines. N-Joy! :eek:

6.1L = 370 CID
5.7L = 346 CID
3.5L = 215 CID
2.7L = 165 CID

Edit: As stated above, the Liter to Cubic Inch math is fuzzy at best both due to the conversion factors and the vagueness of the original displacement numbers. The info above was from the window sticker, but YMMV.