older style heads on newer block - 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 > 429-460 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 01-09-2011, 06:32   #1 (permalink)
Registered User
 
Join Date: Jan 2011
Posts: 1
older style heads on newer block

i have a 1985 460 i wish to replace existing heads with heads pre EGR. My question is will the older heads prior to 71 72 simply bolt to my 85 block and if so, for low end torque which heads would you recommend?
chipewaflash is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-25-2011, 09:39   #2 (permalink)
429/460 Fanatic
 
Paul Kane's Avatar
 
Join Date: Sep 2004
Location: San Francisco Bay Area
Posts: 548
cool Re: older style heads on newer block

Quote:
Originally Posted by chipewaflash View Post
i have a 1985 460 i wish to replace existing heads with heads pre EGR. My question is will the older heads prior to 71 72 simply bolt to my 85 block and if so, for low end torque which heads would you recommend?
Your 1985 460 came from the factory wtih D3VE heads. The heads that you might be interested which would raise compression ratio are the C8VE, C9VE, or D0VE heads. All these heads are essentially the same overall configuration.

Also, all the heads in question have E.G.R. (Exhaust Gas Recirculation).

If you mean that you want to get rid of the air pump (A.I.R. = Air Injector Reactor), then the C8VE and C9VE heads are non-A.I.R. The D0VE heads may or may not be drilled with A.I.R.

All that being said, if the heads are drilled with A.I.R., this does not in-and-of-itself hurt performance.

If you want low end torque, I would recommend that you install a set of early style heads (C8VE, C9VE, or D0VE) that have been bowl blended on the intake and exhaust bowls. The early-style heads will raise the compression ratio on your 1985 engine from 7.7:1 up to 9:1. The increased compression ratio combined with the valve bowl work will dramatically improve torque.

Additionally, the 1985 engine has a timing chain in it that retards cam timing by 8* relative to the crankshaft. Install an aftermarket double roller chain and position the cam back to the earlier straight up position and more torque will be realized.

Paul
__________________

We're on the web; click below:
High Flow Dynamics
Performance Components for the 429/460 Engine Family
Paul Kane 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 > 429-460 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


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 17:00.



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.