|
426 Hemi rocker question
#2549207
09/12/18 02:02 PM
09/12/18 02:02 PM
|
Joined: Aug 2003
Posts: 1,547 Mattituck NY.
FJ6AAR
OP
pro stock
|
OP
pro stock
Joined: Aug 2003
Posts: 1,547
Mattituck NY.
|
Hi, I probably already know the answer to this but I'm wondering what others have to say. My rocker arm assemblies for my 426 hemi are drilled out for 1/2" head bolts. They are not the assemblies that were on the engine the last time it ran. My block is still the standard 7/16". First off, will these work with 7/16" head bolts and maintain proper oil pressure? If not, does anybody know of a crafty fix to try before I search for four oiler rocker stands? thanks in advance, Rob
I want to add that I have a CNC and a few endmils at my disposal so I could machine a bushing for each stand - but I'm hoping somebody has used this combo with success first.
Last edited by FJ6AAR; 09/12/18 02:25 PM.
1970 Hemi 'Cuda hard top clone
1971 Hemi 'Cuda Convertible clone
|
|
|
Re: 426 Hemi rocker question
[Re: FJ6AAR]
#2549240
09/12/18 03:26 PM
09/12/18 03:26 PM
|
Joined: Aug 2003
Posts: 43,195 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,195
Bend,OR USA
|
I would fix it The stock steel stands where machined for them,7/16 head bolts with washers and the stock head bolt shoulder size, not bushed, if I'm remembering correctly All the after market stands I've seen had bushings in them
Last edited by Cab_Burge; 09/12/18 06:26 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: 426 Hemi rocker question
[Re: FJ6AAR]
#2549429
09/12/18 11:28 PM
09/12/18 11:28 PM
|
Joined: Aug 2003
Posts: 1,547 Mattituck NY.
FJ6AAR
OP
pro stock
|
OP
pro stock
Joined: Aug 2003
Posts: 1,547
Mattituck NY.
|
Thank you for the replies Cab_Burge and Transman. It doesn't appear as though the oil passages in the stands were drilled too. Does anybody know the stock size of those passages so I can measure mine to be sure? If they were not drilled out as well, then I should be good to go.
1970 Hemi 'Cuda hard top clone
1971 Hemi 'Cuda Convertible clone
|
|
|
Re: 426 Hemi rocker question
[Re: FJ6AAR]
#2549459
09/13/18 12:53 AM
09/13/18 12:53 AM
|
Joined: Mar 2011
Posts: 3,077 Michigan
A727Tflite
master
|
master
Joined: Mar 2011
Posts: 3,077
Michigan
|
A .250” drill bit fits nicely in those oil passages.
Last edited by Transman; 09/13/18 12:53 AM.
|
|
|
Re: 426 Hemi rocker question
[Re: FJ6AAR]
#2549553
09/13/18 11:46 AM
09/13/18 11:46 AM
|
Joined: Jan 2012
Posts: 2,652 Stuttgart, Arkansas
rickseeman
master
|
master
Joined: Jan 2012
Posts: 2,652
Stuttgart, Arkansas
|
Everything will probably work fine. I would be more concerned with that washer on top having to span a bigger hole. I would be inclined to use this opportunity to acquire a set of those sexy anodized aluminum rocker stands for 7/16" head bolts.
2011 Drag Pak Challenger
|
|
|
Re: 426 Hemi rocker question
[Re: FJ6AAR]
#2549556
09/13/18 12:05 PM
09/13/18 12:05 PM
|
Joined: Aug 2003
Posts: 1,547 Mattituck NY.
FJ6AAR
OP
pro stock
|
OP
pro stock
Joined: Aug 2003
Posts: 1,547
Mattituck NY.
|
Transman, thank you, I will try one today and hopefully it fits just right.
rickseeman, that was on my mind too. If I had the additional funds I would buy a nice sexy set...lol I'm going to look at McMaster-Carr and try to find a hardened - larger diameter washer with the same ID for just that purpose.
Last edited by FJ6AAR; 09/13/18 12:05 PM.
1970 Hemi 'Cuda hard top clone
1971 Hemi 'Cuda Convertible clone
|
|
|
|
|
|