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LS to AMC rocker conversion

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jcisworthy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Topic: LS to AMC rocker conversion
    Posted: Mar/07/2014 at 3:19pm

I am looking into using the LS factory 1.7 ratio rockers on the AMC style bridge heads. So far it looks like an easy conversion. The spacing on a stock LS rocker shim per pair of valves is identical to AMC bridges so all you have to do is cut the LS factory rocker spacer in 4 pieces to make them fit and replace the LS 8mm bolts with a 5/16 course grade 8 cap screw and small washer. The advantages are, more lift LS rockers are 1.7 ratio, less weight over the valve if you are running a roller tip rocker, cheap, free to 50 dollars used, roller fulcrum good to .600 lift as is, easily upgraded with a Comp cams trunion kit for lifts above .600, very strong, no need for guide plates or drilling and taping for studs. I will keep you posted but it is going to be a little while before I have time to mock it up on an engine.

   

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1greasygt View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 1greasygt Quote  Post ReplyReply Direct Link To This Post Posted: Mar/07/2014 at 3:49pm
    And I will be watching. Thanks.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken_Parkman Quote  Post ReplyReply Direct Link To This Post Posted: Mar/07/2014 at 3:58pm

Fantastic info - THANKS!

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jcisworthy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Mar/07/2014 at 5:07pm
No problem, I thought it was pretty cool when I looked at it. Makes the bridge style heads a lot more desirable real quick. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Slate Quote  Post ReplyReply Direct Link To This Post Posted: Mar/07/2014 at 5:08pm
It's AMC heaven if it works out. Cheap and effective. Thanks for sharing whatever comes.

S
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jcisworthy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jcisworthy Quote  Post ReplyReply Direct Link To This Post Posted: Mar/07/2014 at 5:37pm
Oh its going to happen, geometry is too close not to do it. If anyone has something together that they cam mock up sooner than I can, do it! Also opens  possibilities to use offset 1.8 rockers on the intake off an LS 7 set up. I have look at the offset on them thought I think the offset is in the wrong direction, may not work.  
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 232jav3sp Quote  Post ReplyReply Direct Link To This Post Posted: Mar/07/2014 at 6:42pm
heck yeah! Keep us updated! Been kicking around the idea of using the stock iron heads on the 360 I have from a Wagoneer. Just having a hard time justifying the Edel heads. But, I'm a long way off from that...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Traveller Quote  Post ReplyReply Direct Link To This Post Posted: Mar/07/2014 at 6:50pm
Worthy idea.    They don't break often at all, and they're available cheap for sure.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote A0M797X112187 Quote  Post ReplyReply Direct Link To This Post Posted: Mar/07/2014 at 6:50pm
Subscribing.....
-D Payne     AMO 2834 ( Expired )     NAMDRA 3770
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 74Bubblefender Quote  Post ReplyReply Direct Link To This Post Posted: Mar/07/2014 at 7:11pm
Make sure they clear the spring and youll probably need to open up the pushrod hole quite a bit.
We are just about to forge new AMC V8 crankshafts.. please check here
http://www.bulltear.com/forums/showthread.php?19564
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