Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > Tech / General Engine
Register Forgot Password?

Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by Weld Racing
Click Here

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, 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 free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 02-12-2008, 09:07 PM   #1
Senior Member
 
Join Date: Jun 2005
Location: webster
Posts: 264
Car: 1991 Formula
Engine: 5.7
Transmission: 700R4

Classifieds Rating: (1)
Send a message via AIM to specvgini Send a message via Yahoo to specvgini
self aligning rocker arms?

How do i know if i need the self aligning ones or non self aligning? I have a 4 bolt 350 with a flat tappet cam and oem chevy heads. cam is very mild. looking to get some roller tip rockers arms.
__________________
1991 Formula -14.2@97 mph

Current mods: rebuilt 350 .030 over, edelbrock performer rpm intake manifold, edelbrock performer 4brl 750cfm carb, edelbrock intake filter, slp 1 3/4 headers and y pipe, flowmaster american thunder catback, holley FPR, holley external fuel pump, MSD 8.5mm wires, all new brakes, KYB GR2 shocks, lakewood lower control arms, new kickdown cable,new throttle cable, and B&M shift improvement kit.
specvgini is offline vBGarage Page   Reply With Quote
Old 02-12-2008, 10:50 PM   #2
Senior Member
 
Join Date: Apr 2005
Location: CT
Posts: 1,459
Car: 92 trans am clone
Engine: LO3
Transmission: 700r4

Classifieds Rating: (6)
Re: self aligning rocker arms?

pull a valve cover off and check the hole which the pushrods go through. if they barely fit side to side then non self aligning but if its a big hole then youll need either self aligners rockers or guide plates.
vipershark11 is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 08:42 AM   #3
Senior Member
 
Join Date: Jun 2005
Location: webster
Posts: 264
Car: 1991 Formula
Engine: 5.7
Transmission: 700R4

Classifieds Rating: (1)
Send a message via AIM to specvgini Send a message via Yahoo to specvgini
Re: self aligning rocker arms?

ok, so really this is a matter of keeping the pushrod aligned correctly with little play.. So the hole in which the pushrod feeds through on the head is the one i need to look at correct? And if the pushrod looks like it is snug with no room to play then i don't need self aligning. righ tso far?
specvgini is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 10:26 AM   #4
Supreme Member
 
Sonix's Avatar
 
Join Date: Jul 2004
Location: Calgary, AB, Canada
Posts: 10,763
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73

Classifieds Rating: (1)
Re: self aligning rocker arms?

Correct.
If it's a slot then normal rockers, if it's a round hole, then self aligning.

Pre 1987 factory heads typically used normal rockers, after that, or aftermarket heads usually need the SA rockers (or guideplates).
Sonix is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 10:40 AM   #5
Senior Member
 
Join Date: Jun 2005
Location: webster
Posts: 264
Car: 1991 Formula
Engine: 5.7
Transmission: 700R4

Classifieds Rating: (1)
Send a message via AIM to specvgini Send a message via Yahoo to specvgini
Re: self aligning rocker arms?

i'll have to take a valve cover off and look, but i know the heads are pre 87.
specvgini is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 10:48 AM   #6
Senior Member
 
Join Date: Jun 2005
Location: webster
Posts: 264
Car: 1991 Formula
Engine: 5.7
Transmission: 700R4

Classifieds Rating: (1)
Send a message via AIM to specvgini Send a message via Yahoo to specvgini
Re: self aligning rocker arms?

one more quick question, should i buy new pushrods when i change the rocker arms? if so is there a standard size, or does it vary from engine?
specvgini is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 11:27 AM   #7
Supreme Member
 
Sonix's Avatar
 
Join Date: Jul 2004
Location: Calgary, AB, Canada
Posts: 10,763
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73

Classifieds Rating: (1)
Re: self aligning rocker arms?

I wouldn't bother.

If you feel like it, you can get a pushrod length checking tool and use that, then get custom made ones that are EXACTLY the right length. But if you've got a normal (non-custom) shortblock then normal pushrods should be "right".
Sonix is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 11:35 AM   #8
Member
 
chesterfield's Avatar
 
Join Date: Feb 2005
Location: California
Posts: 475
Car: Pontiac

Classifieds Rating: (0)
Re: self aligning rocker arms?

Quote:
Originally Posted by Sonix View Post
Correct.
If it's a slot then normal rockers, .....
I thought that myth was busted. GM used SA rockers with narrow slots. I'd call the rocker mfg and ask what they say.

Click the image to open in full size.
chesterfield is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 12:26 PM   #9
Supreme Member
 
Sonix's Avatar
 
Join Date: Jul 2004
Location: Calgary, AB, Canada
Posts: 10,763
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73

Classifieds Rating: (1)
Re: self aligning rocker arms?

Uhh, yea, that's right. Ok, well most of the time the slots were used with normal non SA rockers.
And if you have giant gaping holes, you CAN'T use non-SA rockers. That's the gist of it.
Sonix is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 01:23 PM   #10
Member
 
chesterfield's Avatar
 
Join Date: Feb 2005
Location: California
Posts: 475
Car: Pontiac

Classifieds Rating: (0)
Re: self aligning rocker arms?

Quote:
Originally Posted by Sonix View Post
Uhh, yea, that's right. Ok, well most of the time the slots were used with normal non SA rockers.
Not from 87 and later. Here's a pic of 350 TPI 083 heads with the slots. You can see from the pic that they are narrower than the studs. i believe these heads also came with SA rockers.
Click the image to open in full size.
chesterfield is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 01:35 PM   #11
Supreme Member
 
Sonix's Avatar
 
Join Date: Jul 2004
Location: Calgary, AB, Canada
Posts: 10,763
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73

Classifieds Rating: (1)
Re: self aligning rocker arms?

Ok, so like I said earlier:
pre 1987 - non-SA rockers
Post 1987 - SA rockers

Right?
Sonix is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 01:37 PM   #12
Senior Member
 
Join Date: Jun 2005
Location: webster
Posts: 264
Car: 1991 Formula
Engine: 5.7
Transmission: 700R4

Classifieds Rating: (1)
Send a message via AIM to specvgini Send a message via Yahoo to specvgini
Re: self aligning rocker arms?

so the first pic was an example of a tight slot pushrod hole that doesn't need self aligning rockers? anyone have an example of the two.. just to make it perfectly clear..
specvgini is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 01:44 PM   #13
Supreme Member
 
Sonix's Avatar
 
Join Date: Jul 2004
Location: Calgary, AB, Canada
Posts: 10,763
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73

Classifieds Rating: (1)
Re: self aligning rocker arms?

Both pictures are examples of the tight pushrod slot.
The other one is.... picture a 1/2" drill bit going through the center of that slot. That's what it would look like. It's REALLY easy to tell the difference, one is a giant ROUND hole, the other is a SLOT.
Sonix is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 02:06 PM   #14
Member
 
chesterfield's Avatar
 
Join Date: Feb 2005
Location: California
Posts: 475
Car: Pontiac

Classifieds Rating: (0)
Re: self aligning rocker arms?

Quote:
Originally Posted by Sonix View Post
Ok, so like I said earlier:
pre 1987 - non-SA rockers
Post 1987 - SA rockers

Right?
Yes, but is there any reason to say pre 1987 heads with the slots use non SA rockers? Its true they didn't come with them, but GM didn't have any prior to 87. I don't see any reason to make a distintion. Are you aware of any reason to say "pre 1987 - non-SA rockers" other than they weren't available at that time?
chesterfield is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 02:37 PM   #15
Supreme Member
 
Sonix's Avatar
 
Join Date: Jul 2004
Location: Calgary, AB, Canada
Posts: 10,763
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73

Classifieds Rating: (1)
Re: self aligning rocker arms?

Oh, I see what you're driving at. I suppose not. Typically self aligning is more expensive, and if they didn't need them from the factory, then I wouldn't go out of my way to get them.
Sonix is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 04:08 PM   #16
Supreme Member
 
Join Date: Dec 2005
Location: Macon, GA
Posts: 6,063
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70

Classifieds Rating: (3)
Send a message via AIM to InfernalVortex
Re: self aligning rocker arms?

If you need self alligning rockers, you can also use guideplates with normal rockers instead. Guideplates mean you should use hardened pushrods, though. So keep that in mind.
InfernalVortex is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 10:13 PM   #17
Junior Member
 
slow89's Avatar
 
Join Date: Jul 2006
Location: Fort worth Tx
Posts: 90
Car: 89 irocz
Engine: 305
Transmission: 700R4
Axle/Gears: 373

Classifieds Rating: (0)
Re: self aligning rocker arms?

hear is a pic of a 96 head
im using these heads on my build so would i want SA rockers?
Attached Images
File Type: jpg jakepics 016.jpg (78.6 KB, 215 views)
slow89 is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 10:25 PM   #18
Moderator
 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Rio Oro de Santa Ana, San Jose, Costa Rica
Posts: 20,979
Car: 1984 Z28 Hardtop / 1988 IROC T-top
Engine: 383 Carb / 305 TPI
Transmission: 4L60 / T-5
Axle/Gears: 3.54 Dana 44 / 3.08 10 bolt

Classifieds Rating: (0)

Re: self aligning rocker arms?

That head has guideplates, so you want non-SA rockers.
Apeiron is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 10:37 PM   #19
Junior Member
 
slow89's Avatar
 
Join Date: Jul 2006
Location: Fort worth Tx
Posts: 90
Car: 89 irocz
Engine: 305
Transmission: 700R4
Axle/Gears: 373

Classifieds Rating: (0)
Re: self aligning rocker arms?

Quote:
Originally Posted by Apeiron View Post
That head has guideplates, so you want non-SA rockers.

could i still use the SA rockers or would that hurt me in any way?
slow89 is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 10:53 PM   #20
Moderator
 
Apeiron's Avatar
 
Join Date: Jan 2000
Location: Rio Oro de Santa Ana, San Jose, Costa Rica
Posts: 20,979
Car: 1984 Z28 Hardtop / 1988 IROC T-top
Engine: 383 Carb / 305 TPI
Transmission: 4L60 / T-5
Axle/Gears: 3.54 Dana 44 / 3.08 10 bolt

Classifieds Rating: (0)

Re: self aligning rocker arms?

The two alignment methods might disagree and you'd have things binding.
Apeiron is offline vBGarage Page   Reply With Quote
Old 02-13-2008, 11:08 PM   #21
Junior Member
 
slow89's Avatar
 
Join Date: Jul 2006
Location: Fort worth Tx
Posts: 90
Car: 89 irocz
Engine: 305
Transmission: 700R4
Axle/Gears: 373

Classifieds Rating: (0)
Re: self aligning rocker arms?

i will defently go with the non SA rockers now thanks alot for ur help
slow89 is offline vBGarage Page   Reply With Quote
Old 02-14-2008, 12:24 PM   #22
Senior Member
 
Join Date: Jun 2005
Location: webster
Posts: 264
Car: 1991 Formula
Engine: 5.7
Transmission: 700R4

Classifieds Rating: (1)
Send a message via AIM to specvgini Send a message via Yahoo to specvgini
Re: self aligning rocker arms?

cool i have a pretty clear answer now and understanding of self aligning rockers. thanks guys.
specvgini is offline vBGarage Page   Reply With Quote
Old 02-14-2008, 12:24 PM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Tech / General Engine

Tags
350, aligning, alinging, arm, arms, body, narrow, problems, rocker, rockers, roller, sa, selfaligning, tip, what
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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 03:58 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.5.2
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details