Well.. I want to rev my (future) engine up to 6500 rpm (6600 fuel cut off) instead of the stock 6000 rpm. The stock springs are suposed to hold up (on a DD) to 6200 rpm (6300 fuel cut off) from what i hear. No cam change, just milling the heads to 10.7-12.0 CR and a custom Tune.

So... any negative experiences or advice on the springs?

 

buy a set of stock ls6 yellow springs, 50 bucks ebay....

 

whatever you do, get the correct compressor for your springs.. < like the one i am selling > i tried it once with a shitty spring compressor and ended up not changing them until i got a better tool.

the right tool makes any job easier, and those yellow z06 springs are rated for around .550 lift, i dont know how high they would rev?

 

So no Problems with the 4 Locking Lifters?

 

nope not yet, getting ready to take it and get it tuned, cant hardly imagin whats its gonna run like then, the cam made alot more power just from feel of driving it,