3v bottom end vs. 2v
Banned
Joined: May 2007
Posts: 4,064
From:
The theory that they are using is, with more efficient heads you will lessen the strain on the short block. Instead of dumping 13lbs of boost into the cylinder to make 500hp, you might only need to use 8lbs. Lower cc pressure, lower stress on the rotating assembly.
ding ding ding ding... the same reason you can 450 rwhp on a cobra and 400 on a GT. And its not that 500 rwhp is the safe limit on a 3v... you just might be able to get away with it, just like lots of cobras and even GTs are able to get away with it.
Thread Starter
2nd Gear Member
Joined: Jan 2008
Posts: 406
From:
makes sense. typically 10#'s of boost on a 3v wll give u around 465 rwhp but on a very safe and fat tune. i dont know a hole lot about wut 2v's can handle buti havent seen to many stock bottom end 2v's with 465 rwhp expecially at 10#'s. so i can c y u would need more boost meaning more stress on the engine to even come close to those #'s.....i love 3v's
Joined: Mar 2007
Posts: 1
Here's the answer
The 3V bottom ends are far superior to the 2V bottom ends, and it has nothing to do with the heads. The rods in the 6 cylinder 05+ are forged. The rods in the rods in the v8 05+ are Cracked powdered metal with floating wristpins.
Here is a really good stat sheet on the 05+
http://www.musclemustangfastfords.co...ive/index.html
Here is a really good stat sheet on the 05+
http://www.musclemustangfastfords.co...ive/index.html
5th Gear Member
Joined: Nov 2005
Posts: 4,412
From: MN
The 3V bottom ends are far superior to the 2V bottom ends, and it has nothing to do with the heads. The rods in the 6 cylinder 05+ are forged. The rods in the rods in the v8 05+ are Cracked powdered metal with floating wristpins.
Here is a really good stat sheet on the 05+
http://www.musclemustangfastfords.co...ive/index.html
Here is a really good stat sheet on the 05+
http://www.musclemustangfastfords.co...ive/index.html
Banned
Joined: May 2007
Posts: 4,064
From:
The 3V bottom ends are far superior to the 2V bottom ends, and it has nothing to do with the heads. The rods in the 6 cylinder 05+ are forged. The rods in the rods in the v8 05+ are Cracked powdered metal with floating wristpins.
Here is a really good stat sheet on the 05+
http://www.musclemustangfastfords.co...ive/index.html
Here is a really good stat sheet on the 05+
http://www.musclemustangfastfords.co...ive/index.html
well considering the v-6 isn't a 3v, and the V8 doesnt have forged rods, I dont know where your going with this. I am not sure I believe that the v-6 has forged rods, that article may have been writing based on different information, there was supposed to be a twin turbo v6 engine version to come out, and I thought that they built that v6 motor in anticpation of using it for that also, but since I dont know what happened to that plan, Im not sure if they made it into production with forged internals, I looked at some v6 pages and found lots of people swapping in forged internals into their 2005+ v6 stangs... so I dont know
Banned
Joined: Apr 2006
Posts: 1,631
From: Goodyear, AZ
The biggest difference is the pistons!! The 3V's are a better design/material then the 2V piston.
It is rare for us to see a piston go bad before the rod "makes a window"
. The 2V is just the opposite. They always crack / break the top ring land. That is why you rarely see broken rods in the 2V...pistons let go first.
Casey
It is rare for us to see a piston go bad before the rod "makes a window"
. The 2V is just the opposite. They always crack / break the top ring land. That is why you rarely see broken rods in the 2V...pistons let go first.Casey
3rd Gear Member
Joined: Oct 2007
Posts: 885
From:
If you look at pictures, the 3v rods actually look a whole hell of alot worse off than the 2v ones...
as everyone else said, its the heads..
Same reason you see cam, blower 2v cars, making in the upper 400s and lasting..
same reason you see 4v cars run 500ish rwhp and not have a problem...
as everyone else said, its the heads..
Same reason you see cam, blower 2v cars, making in the upper 400s and lasting..
same reason you see 4v cars run 500ish rwhp and not have a problem...
