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LS7 valve springs

This is a discussion on LS7 valve springs within the Internal Engine forums, part of the LSx Technical Help Section category; Just wondering are ls7 valve springs interchangable with ls2 heads? I want to rise redline to 7000 rpm and retain ...

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    Question LS7 valve springs

    Just wondering are ls7 valve springs interchangable with ls2 heads? I want to rise redline to 7000 rpm and retain factory like operation and longevity.

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    Slow'er'Ass Mr. Luos's Avatar
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    yes. goal is the move peak hp/tq higher in the rpms but keep over all power profile. I like the flat factory torque curve, consistant power application to wheels. (custom cam grind probably).

    Planning FI, I want to be able to hold first until 55 - 60 mph.

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    Slow'er'Ass Mr. Luos's Avatar
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    FI normally doesn't require revs.

    I am not certain, but I don't believe the LS7 springs fit. What about the Comp 918's??

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    how many miles are the 918's good for? My car is DD and I average a 1000 miles per month. I read some where that aftermarket springs are good for about 30000 miles. I am still new to modding and trying to gather as much info before forking over all that cash for parts.

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    Slow'er'Ass Mr. Luos's Avatar
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    Depends on the cam.

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