How big of a lift can these springs handle? These supposedly came on my heads I got last year, GM pt no. 12556463. I'm also planning on putting on the LT4 hotcam and a a TPiS Miniram intake. Would this cam be ok with on the stock 1.5 rocker?

 

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They work to at least 0.530" lifts. They don't quite fit the stock 1¼" spring pockets. Mine measured closer to 1.280" OD.

With 1.5:1 rockers, the LT4 "Hot" cam produces a net lift of around 0.493"

 

So you are saying that they will work on my 113 Corvette heads with the oem LT4 springs with no problems?

I'm definately gonna change to a MiniRam once I figure out where I can get it for cheap...

As for now, my motor is totally stock, but just with Corvette L98 aluminum heads + those LT4 springs...

Also with a .493 lift, could there be possible piston-valve interference?

How much work is needed to change just the cam and intake?

Thanks a lot.

 

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