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LS7 Triggers and VVT


Grant Baker

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Hi

Has anybody got any base maps or info on setup of an LS7 with VVT?

Specifically the VVT setup... Doesn't seem to be a specific LSx VVT Control mode.

The system seems to have a PWM control which varies Cam from 7 deg advance to 45 deg retard.

Any other issues with stock injectors, coils or sensors on the LS motors?

Thanks in advance

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LS7 is a hand built performance engine, dry sump etc, it only came in the Z06 corvette or as a crate engine, none of them had VVT as far as I know.  

What engine do you actually have?  Maybe you have one of the "displacement on demand" truck engines?

Can you attach a triggerscope.

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Ok, if it is an LS7 engine it will not have VVT, sounds like you need to have a closer look to confirm what you actually have. 

Obviously VVT is not common in a single cam engine as both intake and exhaust lobes will move together.  Some of the LS based truck engines did have a form of VVT but I think that was only on the engines that had "displacement on demand" where some cylinders were disabled by holding the valves open during cruise conditions to make it more economical.

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