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2013-14 Shelby GT500
Ford gt engine troubles
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<blockquote data-quote="Bad Company" data-source="post: 15566453" data-attributes="member: 141815"><p>Hey Snoopy</p><p></p><p>I realized that the gentleman was working with a Ford GT engine with the larger valve covers.</p><p></p><p>There is no upgrade primary chain for the Ford GT. You're stuck using the stock primary chains regardless of which timing chain system you decide to use, as nobody markets a performance chain upgrade for the Ford GT engines.</p><p></p><p>The Ford GT primary chain is an upgrade for the GT500 primary chain, but this requires the valve covers to be changed to accommodate the larger primary sprockets at the exhaust camshafts. </p><p></p><p>If you talk to the engineers at Cloyes about the kit they produce, it is for the Ford GT engine. It will require a valve cover change on a GT500 engine. Cloyes will also tell you that the kit they produce uses both the Ford GT stock primary chains and the stock secondary gauge size chains when comparing gauge size. In fact the engineer I spoke with at Cloyes stated that Cloyes buys the primary chains for this kit from the same manufacturer that Ford purchases them from. They do have available as an upgrade a Z-Racing chain that can be bought separately from the kit to upgrade the secondary chains. From my understanding this was going to be something in the future that would become a standard part of the kit. Unfortunately the secondary Z-Racing chain was NOT increased in gauge size, so the increase in structural strength of these over the stock secondary chains would steer me towards the secondary chains sold by Accufab for a substantial increase in strength when you see the difference in the gauge size The larger gauge secondary chains are required with aftermarket camshafts with higher valve lift, along with the corresponding increase in valve spring seat pressure. Otherwise the stock gauge secondary chain becomes a weak link in the system at high RPM</p><p></p><p>I noticed that he is working with M2K, I was surprised at the fact the engine wasn't an Accufab build to start with. M2K just set a new Texas Mile record with a Accufab engine at 293.6mph in a Ford GT with twin turbos and a MoTec fuel system. It won't be long and 300mph will be surpassed. I think John has an idea from Shawn Fischer about building a unique Lenco that might help, especially since John bought out Lenco on Jan 1.</p></blockquote><p></p>
[QUOTE="Bad Company, post: 15566453, member: 141815"] Hey Snoopy I realized that the gentleman was working with a Ford GT engine with the larger valve covers. There is no upgrade primary chain for the Ford GT. You're stuck using the stock primary chains regardless of which timing chain system you decide to use, as nobody markets a performance chain upgrade for the Ford GT engines. The Ford GT primary chain is an upgrade for the GT500 primary chain, but this requires the valve covers to be changed to accommodate the larger primary sprockets at the exhaust camshafts. If you talk to the engineers at Cloyes about the kit they produce, it is for the Ford GT engine. It will require a valve cover change on a GT500 engine. Cloyes will also tell you that the kit they produce uses both the Ford GT stock primary chains and the stock secondary gauge size chains when comparing gauge size. In fact the engineer I spoke with at Cloyes stated that Cloyes buys the primary chains for this kit from the same manufacturer that Ford purchases them from. They do have available as an upgrade a Z-Racing chain that can be bought separately from the kit to upgrade the secondary chains. From my understanding this was going to be something in the future that would become a standard part of the kit. Unfortunately the secondary Z-Racing chain was NOT increased in gauge size, so the increase in structural strength of these over the stock secondary chains would steer me towards the secondary chains sold by Accufab for a substantial increase in strength when you see the difference in the gauge size The larger gauge secondary chains are required with aftermarket camshafts with higher valve lift, along with the corresponding increase in valve spring seat pressure. Otherwise the stock gauge secondary chain becomes a weak link in the system at high RPM I noticed that he is working with M2K, I was surprised at the fact the engine wasn't an Accufab build to start with. M2K just set a new Texas Mile record with a Accufab engine at 293.6mph in a Ford GT with twin turbos and a MoTec fuel system. It won't be long and 300mph will be surpassed. I think John has an idea from Shawn Fischer about building a unique Lenco that might help, especially since John bought out Lenco on Jan 1. [/QUOTE]
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