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Discussion Starter #1
I'm building a head to put on my K24a1 block with tsx internals, I have stage 3 Brian Crower cams and i was wondering if the stock AP1 s2000 stock valve springs would be able to handle up to 8800-9000rpms on the BC stage 3 cams? Any info would help! Thanks in advance!
 

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S2k springs have about 80lbs of seat pressure I guess you would have to find out where they bind at but if it was me I would just fork out the cash for the right parts.
 

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Discussion Starter #5
thats nice to hear man. i just order the 95lbs supertech dual valve springs, just a little daily driver all motor i have in process. not planning to rev over 9k just yet due to stock tsx bottom internals =(
 
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