Overall Best Cam for STOCK EFI 460 Engine - 460 Ford Forum
460 Ford Forum  
Go Back   460 Ford Forum > Tech Topics > Engine Tech

Engine Tech A place to discuss all 385-series engine tech and theory.

460Ford.com is the premier 460 Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 09-22-2010, 12:57 PM
jonbar87's Avatar
jonbar87 jonbar87 is offline
Member
 
Join Date: Aug 2010
Posts: 50
jonbar87 First On Race Day
Default Overall Best Cam for STOCK EFI 460 Engine

I know there are tons of "which cams are best" threads out there, but for about the last two weeks I've been researching which cam would be best for a STOCK 97 460, and have come up thousands of combinations for everyone's specific engine setup, but none for just a stock 460. What I'm wondering is what would be the best cam (lift, duration, etc....) without hurting low end torque. I understand that if you go with too big of a cam at low rpm you'll get valve overlap which will hurt torque. Is there a bit of room to increase the cam without getting valve overlap? Not looking for big power, just something that would keep my torque from dropping off severely at 3500rpm.

Any suggestion is greatly appreciated.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 09-22-2010, 01:07 PM
Brad Johnson Brad Johnson is offline
Senior Member
 
Join Date: Jan 2006
Posts: 860
Brad Johnson Driving a Ford
Default

In the case of an EFI motor the liming factor is what the computer will tolerate. EFI motors are notoriously picky critters. They'll puke an electronic hairball at the slightest provocation.

IIRC Randy, Dave, and Scott have all built EFI motors with success. They should be able to give you some direction.

Brad
Reply With Quote Quick reply to this message
  #3  
Old 09-22-2010, 03:07 PM
jonbar87's Avatar
jonbar87 jonbar87 is offline
Member
 
Join Date: Aug 2010
Posts: 50
jonbar87 First On Race Day
Default

Quote:
Originally Posted by Brad Johnson View Post
In the case of an EFI motor the liming factor is what the computer will tolerate. EFI motors are notoriously picky critters. They'll puke an electronic hairball at the slightest provocation.

IIRC Randy, Dave, and Scott have all built EFI motors with success. They should be able to give you some direction.

Brad
Thanks, although the computer will not be a problem. I've converted over to SEFI and run a fully standalone AEM EMS computer. I just need to know what cam would be beneficial for a stock setup. Once I find out, I'll be able to tune it for whatever it needs.




Went from 321 torque, to 329, to 341 just from tuning. Not bad IMO considering it's got 35's along with stock exhaust manifolds and cat.

http://www.youtube.com/watch?v=RDqLJDqSXlA





I'm hoping to pickup another 10 - 15ft lbs of torque with a full exhaust setup.

Here she is:

Last edited by jonbar87; 09-22-2010 at 03:27 PM.
Reply With Quote Quick reply to this message
  #4  
Old 09-22-2010, 03:25 PM
GGrahn GGrahn is offline
Member
 
Join Date: Apr 2010
Location: University Place, Wa
Posts: 51
GGrahn First On Race Day
Default

I would think that, though more expensive, porting the top end will help more then the cam at this point.
Reply With Quote Quick reply to this message
  #5  
Old 09-22-2010, 10:38 PM
rmcomprandy rmcomprandy is offline
Senior Member
 
Join Date: Jan 2006
Location: Roseville MI
Posts: 9,894
rmcomprandy Bleeding Blue
Default

You said you have converted to SEFI and a computor isn't a problem so, now you can use whatever cam you choose if you are able to tune the system.
Whether using EFI or carb, any camshaft CAN be used.
If you are skilled with tuning it then for pure torque, I like the CompCams #34-223-4; 255DEH.
__________________
www.rmcompetition.com

R.M. Competition - The finest Custom Engine Building for any venue ... !
Selling Parts and Supplies from companies I use ... 1(586)909-1591

CUSTOM ground camshafts
Carburetor modifications for specific applications
CNC porting
Reply With Quote Quick reply to this message
  #6  
Old 09-22-2010, 11:27 PM
jonbar87's Avatar
jonbar87 jonbar87 is offline
Member
 
Join Date: Aug 2010
Posts: 50
jonbar87 First On Race Day
Default

Ok cool. I just don't want to have to upgrade my valve train or anything like that.....i didn't know how big you could go before the valves would hit the pistons. basically i just want to go with the biggest cam i can without having to change anything else....
Reply With Quote Quick reply to this message
  #7  
Old 09-22-2010, 11:40 PM
Mark Miller Mark Miller is offline
Senior Member
 
Join Date: Jan 2006
Posts: 1,642
Mark Miller Driving a Ford
Default

Quote:
Originally Posted by jonbar87 View Post
Ok cool. I just don't want to have to upgrade my valve train or anything like that.....i didn't know how big you could go before the valves would hit the pistons. basically i just want to go with the biggest cam i can without having to change anything else....
I don't have a cam recomendation but that is a very nice and high truck you have,Later Mark.
Reply With Quote Quick reply to this message
  #8  
Old 09-23-2010, 11:18 AM
rmcomprandy rmcomprandy is offline
Senior Member
 
Join Date: Jan 2006
Location: Roseville MI
Posts: 9,894
rmcomprandy Bleeding Blue
Default

Quote:
Originally Posted by jonbar87 View Post
Ok cool. I just don't want to have to upgrade my valve train or anything like that.....i didn't know how big you could go before the valves would hit the pistons. basically i just want to go with the biggest cam i can without having to change anything else....
"Most TORQUE" and "Bigest Cam to fit" won't be the same thing...
__________________
www.rmcompetition.com

R.M. Competition - The finest Custom Engine Building for any venue ... !
Selling Parts and Supplies from companies I use ... 1(586)909-1591

CUSTOM ground camshafts
Carburetor modifications for specific applications
CNC porting
Reply With Quote Quick reply to this message
  #9  
Old 09-23-2010, 01:13 PM
jonbar87's Avatar
jonbar87 jonbar87 is offline
Member
 
Join Date: Aug 2010
Posts: 50
jonbar87 First On Race Day
Default

Quote:
Originally Posted by rmcomprandy View Post
"Most TORQUE" and "Bigest Cam to fit" won't be the same thing...
very true. What I should have said is the "biggest cam" that won't hurt my low end torque too badly while still giving me some mid-high end gains...
Reply With Quote Quick reply to this message
  #10  
Old 09-24-2010, 08:09 AM
jonbar87's Avatar
jonbar87 jonbar87 is offline
Member
 
Join Date: Aug 2010
Posts: 50
jonbar87 First On Race Day
Default

Quote:
Originally Posted by rmcomprandy View Post
You said you have converted to SEFI and a computor isn't a problem so, now you can use whatever cam you choose if you are able to tune the system.
Whether using EFI or carb, any camshaft CAN be used.
If you are skilled with tuning it then for pure torque, I like the CompCams #34-223-4; 255DEH.
I was doing some research on that particular cam and came across this...anyone else heard of that happening with a CompCams Cam? (post #4)

Last edited by jonbar87; 09-24-2010 at 08:39 AM.
Reply With Quote Quick reply to this message
  #11  
Old 11-11-2010, 12:00 AM
jonbar87's Avatar
jonbar87 jonbar87 is offline
Member
 
Join Date: Aug 2010
Posts: 50
jonbar87 First On Race Day
Default

Any other suggestions?
__________________
The chance that higher life forms might have emerged from a bowl of soup is comparable to the chance that a tornado sweeping through a junk yard might assemble a Boeing 747 from the materials therein.
Reply With Quote Quick reply to this message
  #12  
Old 11-11-2010, 07:25 AM
darrin1999 darrin1999 is offline
Senior Member
 
Join Date: Oct 2006
Location: fargo, nd
Posts: 1,654
darrin1999 First On Race Day
Default

cams break down like that from improper break-in... usually either too high spring pressure (if you are going dual spring take out the inners for break-in) or lack of zinc in modern oils (they sell zddp additive for break-in) or they dont do the rev guidelines for break-in (bring it immediately to 2000rpm and bounce it from 2000-2500rpm for 20-30 min... no idling/driving)
__________________
just another dual quad 545 :-)
Reply With Quote Quick reply to this message
  #13  
Old 11-11-2010, 11:13 AM
rmcomprandy rmcomprandy is offline
Senior Member
 
Join Date: Jan 2006
Location: Roseville MI
Posts: 9,894
rmcomprandy Bleeding Blue
Default

AS been said, porting the lower intake manifold has a big benefit. It is terrible in stock form for anything other than "off idle" and highway cruising engine speeds.

The Lunati cam #06169 shifts the power a LITTLE higher than that Comp grind. Both can use all stock valve train.
__________________
www.rmcompetition.com

R.M. Competition - The finest Custom Engine Building for any venue ... !
Selling Parts and Supplies from companies I use ... 1(586)909-1591

CUSTOM ground camshafts
Carburetor modifications for specific applications
CNC porting
Reply With Quote Quick reply to this message
  #14  
Old 11-11-2010, 12:35 PM
jonbar87's Avatar
jonbar87 jonbar87 is offline
Member
 
Join Date: Aug 2010
Posts: 50
jonbar87 First On Race Day
Default

Thanks for the info everyone. Keep it coming.
__________________
The chance that higher life forms might have emerged from a bowl of soup is comparable to the chance that a tornado sweeping through a junk yard might assemble a Boeing 747 from the materials therein.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the 460 Ford Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may post new threads
You may 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

Forum Jump


All times are GMT -5. The time now is 01:11 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.