Telling 4V heads - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland Tech
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 09-28-2002, 06:17   #1 (permalink)
Registered User
 
Join Date: Jul 2002
Location: Brisbane\Gold Coast
Posts: 33
Telling 4V heads

Well, I've been told 10 different stories todfay :) well not hat many, but here goes,

Cleveland 4V heads, the cast marking on the end of the head says 4 but i dont believe these heads are 4V and that marking tells me nothing but some guys say it does mean 4v, What do the markings mean and there any other ways of telling 4V other than the inlet size

ps. does anyone have the inlet size handy for 2v and 4v
FordMatty is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 09-28-2002, 06:45   #2 (permalink)
Veteran Ford Member
 
Join Date: Jul 2001
Location: In a Dark Cave
Posts: 5,316
chances are if it has 4 on it , it will be 4v ... 4v heads have big valves .. big ports ..and usually closed chambers.
I dont have port sizes handy...but if you can look at the inlet ports and they are massive..then they are 4vs..if they look big but not huge..2v's
xacoupe is offline   Reply With Quote
Old 09-28-2002, 07:01   #3 (permalink)
Ford Member
 
Join Date: Aug 2002
Location: Sydney
Posts: 302
Ford Matty,

For american built engines.
From what I have read and seen, the casting marks, 4V, on the heads mean they are american 4v heads. If there are no markings then they are 2v.

For aussie built engines, a 4v engine came with a 4 barrel mainfold and carb, and the 2v was a 2 barrel manifold and carb.

Anyone else know if I'm right?? (Don't mind being proven wrong).
Chris Nee is offline   Reply With Quote
Old 09-28-2002, 13:50   #4 (permalink)
Registered User
 
Join Date: Aug 2002
Location: New Zealand
Posts: 220
All american manufactured cleveland heads have either a 2 or a 4 cast into the head. It is located on the flat surface of the head at either end where the head surface meets the intake manifold and the rocker cover gasket rail curves around.

All aussie cast heads had just a flat surface with no numbers in this particular location.

Valve size for 2V = 2.05 intake, 1.65 exhaust
Valve size for 4V = 2.19 intake, 1.71 exhaust

Note that both 2V and 4V came in open and closed chamber, and the 1974 4V heads had 2V valve sizes.

You can alwayss tell the 4V heads by looking at the exhaust port shape. 2V = true oval shape, 4V = almost square shape with an intrusion for the exhaust manifold bolt boss in one top corner.

Good luck
Tris
xafalcon is offline   Reply With Quote
Old 10-07-2002, 04:19   #5 (permalink)
Registered User
 
Racer's Avatar
 
Join Date: Oct 2002
Location: Sydney
Posts: 992
To add to that, there are also 4. (dot) heads.
Apparently they are all open chambered but the only ones I have seen have been closed chamber. Can anyone clear this up?
__________________
Old School Cortina: 9.87@138
The "other" car: 10.41@127
Racer is offline   Reply With Quote
Old 10-07-2002, 05:50   #6 (permalink)
Veteran Ford Member
 
Join Date: Jul 2001
Location: In a Dark Cave
Posts: 5,316
4. is supposed to be closed chamber AFAIK .. my XB had factory 4. and they were closed
xacoupe is offline   Reply With Quote
Old 10-07-2002, 05:59   #7 (permalink)
Registered User
 
Join Date: Mar 2002
Location: Liverpool , Sydney
Posts: 212
One way I tell when they are on the engine is to look at the intake runner as it enters the head.If it is broad(about 60mm or so)then it is 4V. I have seen 4 stamped on 2V closed chamber so the numbers aren't always reliable.

I have a couple of pics of heads I want to post but dont know how to do it.
__________________
Getting Old Beats Not Getting Any

AU Forte, EL GT Intake Snorkel and EF Airbox with more mods to come
Great White is offline   Reply With Quote
Old 10-07-2002, 06:01   #8 (permalink)
[V8]Ford Power
Guest
 
Posts: n/a
the number isn't stamped... it is cast - eg. raised above the level of the metal around it. Mine are cast on 4's.
  Reply With Quote
Old 10-07-2002, 23:09   #9 (permalink)
Ford Parts Interpretor
 
ADZ351's Avatar
 
Join Date: Mar 2002
Location: New South Wales
Posts: 184
mine are cast 4. (with a dot after the 4) they are open chamber but I also have a set of closed chamber with just the 4
__________________
There's no substitute for cubic inches!
ADZ351 is offline   Reply With Quote
Old 10-08-2002, 00:51   #10 (permalink)
Veteran Ford Member
 
Join Date: Jul 2001
Location: In a Dark Cave
Posts: 5,316
Quote:
Originally posted by ADZ351
mine are cast 4. (with a dot after the 4) they are open chamber but I also have a set of closed chamber with just the 4
seems that there is no apparent reason for the dot.... I always assumed it was for closed chamber but that's since been proven worng
xacoupe is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
AFR versus TFS Alloy Heads - AP Still Reckons TFS is the Go Aussie Pete Windsor Tech 24 06-09-2003 23:40
Cleavland Heads 4v AU1SIXA General Tech 3 05-02-2002 07:20

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 12:37.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.