|
|
|
Your donations help keep this valuable resource free and growing. Thank you.
|
343 heads |
Post Reply 
|
Page 12> |
| Author | |
jlswaggers 
AMC Apprentice 
Joined: Dec/22/2008 Location: hudson, nc 2863 Status: Offline Points: 187 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: 343 headsPosted: Mar/27/2015 at 6:49pm |
|
i am rebuilding my 68 343, what are pros and cons of stock head bolts. should i have machine shop rework heads to use 1/2 bolts. should i re-use stock head bolts. i am rebuilding as close to stock as i can
|
|
 |
|
|
gremlinsteve
AMC Addicted 
Joined: Dec/16/2008 Location: houston Status: Offline Points: 884 |
Post Options
Thanks(0)
Quote Reply
Posted: Mar/27/2015 at 7:17pm |
|
What are they going on
|
|
|
|
|
FASTNASH
AMC Apprentice
Joined: Jan/30/2011 Location: York PA Status: Offline Points: 156 |
Post Options
Thanks(0)
Quote Reply
Posted: Mar/27/2015 at 8:44pm |
|
If you want to replace bolts. ARP has them. Real cheaper. I have 7/16 bolts on 4 cars. Never blew head gasket yet. Put them in 80's. Still going strong. And them originals. So that my two cents.
|
|
|
AMO#3040 NAMDRA#1115 AMC's are just like potato chips you just can't have one.
|
|
|
|
|
WesternRed
AMC Addicted
Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5799 |
Post Options
Thanks(0)
Quote Reply
Posted: Mar/28/2015 at 1:45am |
|
Probably not worth the effort upgrading to 1/2", just put some 7/16" ARP bolts in it if you want a little extra piece of mind.
|
|
|
|
|
Boris Badanov
AMC Addicted
Joined: Dec/14/2013 Location: NH USA Status: Offline Points: 4209 |
Post Options
Thanks(0)
Quote Reply
Posted: Mar/28/2015 at 6:14am |
|
I never liked re-doing a 7/16-14 to a 1/2-13, the holes
are compramised by remnents from the original threads. 1/2-13 has a minor diameter of .421 and 4/16-14 has a major diameter of .4375 Typically 7/16-14 taps run .442 outside diameter, you will never clean it up completely. +1 on the above, use good studs and forgeddaboudit....
|
|
|
Gremlin Dreams
|
|
|
|
|
amcglass
AMC Addicted
Joined: Dec/11/2011 Location: NW Ohio Status: Offline Points: 2588 |
Post Options
Thanks(0)
Quote Reply
Posted: Mar/28/2015 at 6:24am |
|
use the ARP bolts and don't machine the heads
|
|
|
Javmanpres
BBG Mark Donohue 401 74 Jav/AMX 71 Matador 2dr sedan delivery wagon 1902 Rambler Runabout 70 T/A Javelin |
|
|
|
|
KLW
AMC Nut
Joined: Sep/02/2012 Location: MN Status: Offline Points: 488 |
Post Options
Thanks(0)
Quote Reply
Posted: Mar/28/2015 at 10:49am |
|
I agree. A good set of ARP 7/16 bolts will take you a long way. That's what I have on my 567 hp 420 inch stroker
|
|
|
1981 Spirit
(420 cu in stroker - 570 hp) 1966 Ford Fairlane Convertible (331 Cu In - 450 HP) |
|
|
|
|
jlswaggers
AMC Apprentice
Joined: Dec/22/2008 Location: hudson, nc 2863 Status: Offline Points: 187 |
Post Options
Thanks(0)
Quote Reply
Posted: Mar/28/2015 at 11:07am |
|
thanks for the replys. pretty much what i was thinking. why not machine the heads?
|
|
|
|
|
Ken_Parkman
AMC Addicted
Joined: Jun/04/2009 Location: Ontario Status: Offline Points: 1814 |
Post Options
Thanks(0)
Quote Reply
Posted: Mar/28/2015 at 1:02pm |
|
To do it right is actually a very difficult thing to do, and unless the guy doing it is very good (and therefore expensive) there is a high probability of screwing it up. The 7/16 are fine, a lot would say better, so there is no reason to take the risk.
|
|
|
|
|
Class Guy
AMC Addicted
Joined: Jul/02/2007 Location: Arkansas Status: Offline Points: 969 |
Post Options
Thanks(0)
Quote Reply
Posted: Mar/28/2015 at 2:56pm |
|
For comparison and consideration: ALL small block and big block Chevies use 7/16" bolts. 1/2" bolts are overkill.
|
|
|
|
|
Post Reply
|
Page 12> |
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Click for TheAMCForum Rules
Topic Options