Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > 335 Series- 5.8/351M, 6.6/400, 351 Cleveland
Sign in using an external account
Register Forgot Password?


Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 11-05-2013, 08:25 PM
jvilseckjr jvilseckjr is offline
New User
 
Join Date: Nov 2002
Location: Somerville Tn.
Posts: 3
jvilseckjr is starting off with a positive reputation.
351M rocker arms

Are the 351M and 351C rocker arms the same? I just installed a Comp Xtreame Energy XE274H-10 cam in my 79 351M. I was wondering if I could put 351C roller rockers on it?
Reply With Quote
  #2  
Old 11-06-2013, 09:08 PM
dimora's Avatar
dimora dimora is offline
Senior User
 
Join Date: Mar 2004
Posts: 203
dimora is starting off with a positive reputation.
Quote:
Originally Posted by jvilseckjr View Post
Are the 351M and 351C rocker arms the same? I just installed a Comp Xtreame Energy XE274H-10 cam in my 79 351M. I was wondering if I could put 351C roller rockers on it?
Yes. You want 1.73 ratio.
__________________
78 Ford LTD: Ford 400 Bored out .030 - 408 CI, Edelbrock #2171 Intake Manifold, Edelbrock #1805 650 CFM Thunder AVS Carb, Edelbrock #8844 water pump, TMeyer spec KB2344 pistons, Aussie Cleveland 302C "Quench" TMeyer heads, Custom Comp Hyd Roller Cam (216 / 224 @.050", 108LSA), Lunati Roller lifters, Scorpion Roller Rockers. Got M? More is better. Mods in Garage
Reply With Quote
  #3  
Old 11-07-2013, 08:39 AM
baddad457 baddad457 is offline
Post Fiend
 
Join Date: May 2003
Location: south louisiana
Posts: 6,546
baddad457 has a good reputation on FTE.baddad457 has a good reputation on FTE.baddad457 has a good reputation on FTE.
The rockers are the same, but check the fulcrums. The Clevelands had aluminum fulcrums, the late 351M's had iron fulcrums. The iron are what you want. They can also be sourced out of a 370/429 truck engine.
__________________
89 Ranger supercab-- 302-4bbl-- 4 speed 68 Mercury Monterey 390 4 bbl C-6 77 F100 400M C-6 67 Mustang fastback 427 2-4
Reply With Quote
  #4  
Old 11-10-2013, 12:02 PM
beartracks's Avatar
beartracks beartracks is offline
Postmaster
 
Join Date: Nov 2000
Location: Albuquerque
Posts: 4,357
beartracks is starting off with a positive reputation.
the roller rockers will be the same and are all the same ratio. If you don't put in studs for adjustments you could have problems with geometry.
__________________
Bear Tracks

1977 F-100 Ranger XLT,400,C6,GV
Mod's Listed in Gallery

Click Here To Help Support FTE
Reply With Quote
  #5  
Old 11-10-2013, 05:39 PM
jvilseckjr jvilseckjr is offline
New User
 
Join Date: Nov 2002
Location: Somerville Tn.
Posts: 3
jvilseckjr is starting off with a positive reputation.
Rockers

Thanks for the info.. Will the 1.73 give more lift on the cam? adv dur is 274 286 with .562 .565 lift
Reply With Quote
  #6  
Old 11-11-2013, 11:37 AM
baddad457 baddad457 is offline
Post Fiend
 
Join Date: May 2003
Location: south louisiana
Posts: 6,546
baddad457 has a good reputation on FTE.baddad457 has a good reputation on FTE.baddad457 has a good reputation on FTE.
Quote:
Originally Posted by jvilseckjr View Post
Thanks for the info.. Will the 1.73 give more lift on the cam? adv dur is 274 286 with .562 .565 lift
No, that's the stock ratio for all the Cleveland/Modifieds
__________________
89 Ranger supercab-- 302-4bbl-- 4 speed 68 Mercury Monterey 390 4 bbl C-6 77 F100 400M C-6 67 Mustang fastback 427 2-4
Reply With Quote
  #7  
Old 11-12-2013, 11:35 AM
BuzzLOL BuzzLOL is offline
Senior User
 
Join Date: Dec 2012
Location: Toledo, Ohio
Posts: 420
BuzzLOL is starting off with a positive reputation.
.. Yes, that cam already shows good lifts... that same cam in a SBChevy with stock 1.5 rocker arms would spec. out at much lower lifts...

.. As BearTracks hinted at, rocker fulcrum shims may be needed or changed to get proper hydraulic lifter preload...

.. If you're not satisfied with the performance of your 351M with that cam, it's prolly because the compression ratio is too low and that's difficult to fix with available off-the-shelf 351M pistons, hence why everyone converts 351M's to 400's...
Reply With Quote
Old 11-12-2013, 11:35 AM
Reply

Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > 335 Series- 5.8/351M, 6.6/400, 351 Cleveland

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
351w Roller Rockers hunnterr4 1987 - 1996 F150 & Larger F-Series Trucks 2 04-15-2013 03:41 PM
C4, C6, OR AOD? jrockdiddy 1948 - 1956 F1, F100 & Larger F-Series Trucks 15 04-03-2013 10:14 AM
Just a few questions on 351w SD EFI rocker upgrade. SCRebel 1987 - 1996 F150 & Larger F-Series Trucks 6 01-17-2013 09:51 AM
Parts interchange oddfordjunkie 335 Series- 5.8/351M, 6.6/400, 351 Cleveland 6 01-13-2013 11:43 PM
351w torque specs moneypitf150351w 1987 - 1996 F150 & Larger F-Series Trucks 4 08-11-2012 11:04 PM



All times are GMT -5. The time now is 05:35 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup