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LS to AMC rocker conversion |
Post Reply | Page 123 10> |
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jcisworthy
AMC Addicted Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
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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
AMC Nut Joined: Jun/26/2013 Location: Florida Status: Offline Points: 304 |
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And I will be watching. Thanks.
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Ken_Parkman
AMC Addicted Joined: Jun/04/2009 Location: Ontario Status: Offline Points: 1815 |
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Fantastic info - THANKS! |
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jcisworthy
AMC Addicted Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
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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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Slate
AMC Addicted Joined: Feb/28/2012 Location: Airyzona Status: Offline Points: 2783 |
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It's AMC heaven if it works out. Cheap and effective. Thanks for sharing whatever comes.
S
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jcisworthy
AMC Addicted Joined: Jul/23/2009 Location: North Carolina Status: Offline Points: 2805 |
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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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232jav3sp
AMC Addicted Joined: Jan/09/2013 Location: Texas Status: Offline Points: 2451 |
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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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Traveller
AMC Addicted Joined: Feb/26/2011 Location: Idaho Status: Offline Points: 1011 |
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Worthy idea. They don't break often at all, and they're available cheap for sure.
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A0M797X112187
AMC Nut Joined: Mar/18/2009 Location: Belton, MO Status: Offline Points: 278 |
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Subscribing.....
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-D Payne AMO 2834 ( Expired ) NAMDRA 3770
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74Bubblefender
AMC Addicted Charter Member Joined: Jun/29/2007 Location: The AMC form Status: Offline Points: 2589 |
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Make sure they clear the spring and youll probably need to open up the pushrod hole quite a bit.
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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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