PONTIAC ZONE TECH FORUMS
 

Go Back   PONTIAC ZONE TECH FORUMS >
Engine Tech
> Iron D-Port Heads
User Name
Password

Iron D-Port Heads All iron d-port heads, flow number and performance results

sponser links

Reply
 
Thread Tools
Old 10-28-11, 01:24AM   #1
SDGOAT619
Registered User
 
Join Date: Aug 2011
Location: San Diego, CA
Posts: 17
Default need advise

So after much research and so far spot on advise I have decised that for the mean time to stay with the iron heads. Now to choose the best heads for my stock 455 block. First question can heads intended for 400's be used on a 455 block? If so I have found two very clean heads already magnafluxed and ready to go (7k3)2.11/1.77 96cc[$450] and (6x-4)2.11/1.66 93.74cc[$400]. Are these good prices and what should I expext as far as preformance over my 114cc 4x-1h heads.

Thanks as always
SDGOAT619 is offline   Reply With Quote
Old 10-28-11, 01:55AM   #2
Dragncar
Registered User
 
Join Date: Aug 2005
Location: Mcinleyville CA
Posts: 647
Default

All D ports flow the same.
Use the smallest chamber you can.
If you want to run race gas, do it.
If you want to run pump gas dish the piston.
Dragncar is online now   Reply With Quote
Old 10-29-11, 02:22PM   #3
1971WARBIRD
Registered User
 
1971WARBIRD's Avatar
 
Join Date: Dec 2008
Location: tipp city,ohio
Posts: 20
Default

the hardest part about using the 7K3 heads, is they don't have the last holes for using headers if that is what you want. they don't even have the metal there to drill. they do make an L bracket you can bolt on but the 6X4 would work easier.
__________________
Freedom isn't Free
1971WARBIRD is offline   Reply With Quote
Old 10-29-11, 03:53PM   #4
Gach
Administrator
 
Gach's Avatar
 
Join Date: May 2003
Location: ....
Posts: 18,601
Default

Definitely the 6X-4 heads.
__________________
The things they hide, the way they spin things, the excuses that they make and the things they omit.
Gach is offline   Reply With Quote
Old 10-29-11, 08:23PM   #5
SDGOAT619
Registered User
 
Join Date: Aug 2011
Location: San Diego, CA
Posts: 17
Default

yeah I think that the way I will go 6x-4 converted to 1.77
SDGOAT619 is offline   Reply With Quote
Old 10-29-11, 10:02PM   #6
Gach
Administrator
 
Gach's Avatar
 
Join Date: May 2003
Location: ....
Posts: 18,601
Default

Their one of the best flowing d port heads. The most sort after by the Super Stock racers because the port is so good.
__________________
The things they hide, the way they spin things, the excuses that they make and the things they omit.
Gach is offline   Reply With Quote
Old 11-02-11, 07:01PM   #7
SDGOAT619
Registered User
 
Join Date: Aug 2011
Location: San Diego, CA
Posts: 17
Default

Is there a great difference between the 6x-4 vs the 6x-8 besides chamber size. would one be better than the other on the 455.
SDGOAT619 is offline   Reply With Quote
Old 11-03-11, 12:49PM   #8
Jeffs 64
Registered User
 
Jeffs 64's Avatar
 
Join Date: Jun 2007
Location: Pgh, Pa
Posts: 476
Default

I have 6x8 but the 6x4s are better.. Use a nice street cam like the Crower 60919 and you'll be in good shape with 89-91 gas. I have that cam in my 462 and love it!.. Your cam is going to be a big factor in compression too!
Jeffs 64 is offline   Reply With Quote
Old 11-03-11, 01:27PM   #9
Ken Keefer
Registered User
 
Join Date: Apr 2011
Location: Brooksville, Fl.
Posts: 164
Thumbs up

Quote:
Originally Posted by SDGOAT619 View Post
yeah I think that the way I will go 6x-4 converted to 1.77
x 2 for the street in an iron factory head.
and cheaper to purchase on the open market then the pre 71 heads.
__________________
Ken's Speed & Machine Shop
512 S. Main St.
Brooksville, Fl. 34601
1-352-796-8800
pdsales@tampabay.rr.com
http://Pontiacdude.cc
Your ATI ProCharger dealer for Pure Pontiac Blow thru applications.
Ken Keefer is offline   Reply With Quote
Old 03-30-12, 01:44AM   #10
SDGOAT619
Registered User
 
Join Date: Aug 2011
Location: San Diego, CA
Posts: 17
Default Update

After a lot of waiting I just picked up some 6x-4 heads that are in need of some work but for $150 not a bad deal at all. I cant wait to get these on the 455
SDGOAT619 is offline   Reply With Quote
Reply


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

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
12 bolt dif/ advise FireBird455 Engine Tech Discussion - Street or Strip 0 11-17-09 11:19AM
Installing plate set-up. Need some advise. Sergef Engine Tech Discussion - Street or Strip 19 11-05-08 09:49PM
carb advise scott s Carburetion & Fuel sytems 33 09-09-08 12:30AM
Need some advise on my new Bird! imported_MikeC Engine Tech Discussion - Street or Strip 19 03-28-07 01:02AM
advise on a GT-37 pontiaclover 1958 - 1981 Pontiac Tech & Restoration 12 02-19-07 02:06AM


All times are GMT -3. The time now is 06:39AM.

Featured Ads
Ken's Speed & Machine
Mayhem Turbocharging

Carter Cryogenics.  What can we freeze for you?

Pacific Performance Racing

Central Virginia Machine Service.  Home of the Injun Engine!

All Pontiac Engine Kits

Larry's Auto Machine.  Full serivce auto, marine machine shop, domestic and foreign.

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
2001 - 2007 PontiacZone.com
Page generated in 0.12062 seconds with 33 queries