TheAMCForum.com Homepage
Forum Home Forum Home > The Garage > AMC 6 Cylinder Engine Repair and Modifications
  New Posts New Posts RSS Feed - 232/258 headers
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Click for TheAMCForum Rules / Click for PDF version of Forum Rules
Your donations help keep this valuable resource free and growing. Thank you.

232/258 headers

 Post Reply Post Reply Page  <12
Author
Message
Greyhounds_AMX View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Nov/14/2009
Location: Kansas City
Status: Offline
Points: 1268
Post Options Post Options   Thanks (0) Thanks(0)   Quote Greyhounds_AMX Quote  Post ReplyReply Direct Link To This Post Posted: May/10/2021 at 6:34pm
It seems like the cost of the headers would justify the swap to a 4.0L head.
1968 AMX 390 w/T5
Back to Top
farna View Drop Down
Supporter of TheAMCForum
Supporter of TheAMCForum
Avatar
Moderator Lost Dealership Project

Joined: Jul/08/2007
Location: South Carolina
Status: Offline
Points: 19608
Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: May/11/2021 at 5:40am
That's what I always recommend! Better head and valve cover, and a factory header to boot, all for about the same price as a new Clifford header. It's a bit more work, but at that point worth it. Change the cam while you have the head off and you really get a boost in power! The head and header alone only give a 3-5 hp boost, regardless of the "25-30 hp" you sometimes read about on the Internet. Those guys are swapping the entire EFI system and head. They also may have had other issues with the carb and/or ignition system (you have to change ignition when swapping to EFI) which makes it feel like a lot more power than swapping to a well tuned carb engine with systems in good condition.

Ollie, Jack Clifford passed away some time ago. Clifford Research changed hands, I think before his death. I don't think anyone from the family is working there, but I'm not sure. I seem to recall that ownership passed to what was his shop foreman though.
Frank Swygert
Back to Top
Ollie View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Sep/17/2012
Location: Brandon, MS
Status: Offline
Points: 2801
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ollie Quote  Post ReplyReply Direct Link To This Post Posted: May/11/2021 at 6:45am
Originally posted by farna farna wrote:

..................Ollie, Jack Clifford passed away some time ago. Clifford Research changed hands, I think before his death. I don't think anyone from the family is working there, but I'm not sure. I seem to recall that ownership passed to what was his shop foreman though. 

At the time I was dealing with them, Frank, his son Larry was running the show. That's been at least 5 years ago........

I just found this post June 8, 2015, listed in member's projects; Ollie's 66 American Convertible.
That's when I got my Clifford Headers


Having AMC Fun,
Ollie


Edited by Ollie - May/11/2021 at 6:54am
1966 American Convertible -- "The Rambler"..SOLD
1974 Postal Jeep -- "Rapid Delivery"...SOLD
1969 Rambler 220 post car--"Road Warrior"
1989 Jeep Comanche Pioneer, 4.0L, auto, 2wd
Back to Top
 Post Reply Post Reply Page  <12
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.03
Copyright ©2001-2019 Web Wiz Ltd.

This page was generated in 0.172 seconds.
All content of this site Copyright © 2018 TheAMCForum unless otherwise noted, all rights reserved.
PROBLEMS LOGGING IN or REGISTERING:
If you have problems logging in or registering, then please contact a Moderator or