LS7 and LS1 cam fitment questions
Thread Starter
Teching In
Joined: Jan 2010
Posts: 7
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From: asheville NC
LS7 and LS1 cam fitment questions quick question- I a LS7 stock cam and a LS1 stock cam in my garage packed up and was wondering if either of these will not fit in any other LS motors (5.3, LS6, LS2, LS3 etc). I'm planning on putting an LS motor in my 63' C10 and was wondering if either of these cams could go in anything I ended up with. thanks for your help in advance.
TECH Fanatic
Joined: Jul 2007
Posts: 1,800
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From: Wilmington, De
The LS7 is a Gen IV camshaft, which means it doesn't have the groove on the back of the camshaft for the cam sensor. If you want to put it in a Gen III engine, you will need a Gen IV timing cover and 1x cam gear.
TECH Fanatic
Joined: Jul 2007
Posts: 1,800
Likes: 327
From: Wilmington, De
Yep. The physical dimensions remained the same.
The changes were in the cam sensor location. In a nut shell, a Gen III cam will work in a Gen IV block without issue, but a Gen IV cam requires the Gen IV timing cover and cam gear to work in a Gen III block due to the sensor being moved to the front of the motor. You will obviously also need an extension harness.
The only other thing to look out for if you select a Gen IV engine is, if you plan on using a throttle cable, to make sure the crank has a 24x reluctor wheel on it. If it has a 58x reluctor, you need to remove the crank and switch to a 24x reluctor or get the Lingenfelter crank signal conversion box. In my opinion, the conversion box shouldn't even be considered as it just adds a point of failure.
The changes were in the cam sensor location. In a nut shell, a Gen III cam will work in a Gen IV block without issue, but a Gen IV cam requires the Gen IV timing cover and cam gear to work in a Gen III block due to the sensor being moved to the front of the motor. You will obviously also need an extension harness.
The only other thing to look out for if you select a Gen IV engine is, if you plan on using a throttle cable, to make sure the crank has a 24x reluctor wheel on it. If it has a 58x reluctor, you need to remove the crank and switch to a 24x reluctor or get the Lingenfelter crank signal conversion box. In my opinion, the conversion box shouldn't even be considered as it just adds a point of failure.
