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robert1839
Tristan Cook
5579 Timber Ridge Dr, Mt Vernon, Skagit, Washingto
(118 posts)

Registered:
05/06/2013 11:11PM

Main British Car:
MGB GT 1972 Buick 215

3.0 v6 v.s 3.0 v8
Posted by: robert1839
Date: August 02, 2014 02:55AM

so a friend and i are discussing the diff between a 3.0 v6 and a 3.0 v8. we are under the impression that all 6 cylinders put to gather will make 3.0 liters and on the v8 all 8 cylinders put to gather will make 3.0 liters this correct right? so if that is right then witch is more power full assuming both have the same stroke length?


MG four six eight
Bill Jacobson
Wa state
(324 posts)

Registered:
10/23/2007 02:15AM

Main British Car:
73 MGB Buick 215, Eaton/GM supercharger

Re: 3.0 v6 v.s 3.0 v8
Posted by: MG four six eight
Date: August 02, 2014 12:18PM

Tristan,

All things being fairly equal, generally speaking the engine fewer cylinders will produce more torque (at a lower RPM). While the engine with more cylinders will produce more peak horse power (at a higher RPM).
A comon expample of this would be street bike or snowmobile engines. Where Japanese engine manufactures will build a 4 cylinder engine the same displacement as a big twin in order to achieve more peak horse power (more cylinders and valves to get air/fuel in/out of the engine equals more peak HP).

Bill


joe_padavano
Joseph Padavano
Northern Virginia
(156 posts)

Registered:
02/15/2010 03:49PM

Main British Car:
1962 F-85 Deluxe wagon 215 Olds

Re: 3.0 v6 v.s 3.0 v8
Posted by: joe_padavano
Date: August 03, 2014 04:43PM

With the stroke held the same, the V8 would have smaller bores to achieve the same 3.0 liter displacement. The smaller bore restricts valve size and flow, which would limit HP. The more usual way to do it would be to use a smaller stroke with more cylinders, allowing higher RPMs and reducing reciprocating mass.


quietone
Larry Mimbs
Tennille, Ga.
(93 posts)

Registered:
07/13/2013 04:22PM

Main British Car:


Re: 3.0 v6 v.s 3.0 v8
Posted by: quietone
Date: August 03, 2014 05:22PM

Interesting !


robert1839
Tristan Cook
5579 Timber Ridge Dr, Mt Vernon, Skagit, Washingto
(118 posts)

Registered:
05/06/2013 11:11PM

Main British Car:
MGB GT 1972 Buick 215

Re: 3.0 v6 v.s 3.0 v8
Posted by: robert1839
Date: August 07, 2014 03:08PM

ok thank you i think i understand a bit more now


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