What springs to Use
Thread Starter
Cruising
Joined: May 2020
Posts: 12
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What springs to Use
Hey guys I placed an order with TSP for my LS7 and was just confirming that everything seems in check. I ordered the solid ss valves over the hollow as the tech said it shouldn’t really make a difference. The part where I’m a bit confused is I have the 248/260, .657"/.655", 111 LSA, 108 ICL cam with their PAC .660 lift springs and titanium retainers. In a bit worried about the high lift for the cam and heavier valves. Should I upgrade to the .700 springs or will the .660 be good? Also do you guys think it’s worth upgrading to the hollow stem ss valves? I’ve read that 8k rpm benefits but below that solid ss are good. Thank you guys!
Race Director
Joined: Dec 2013
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Only one question, and how do you plan to get the motor to breath to 8K in the first place, since there is just not enough room under the hood to pull that off short of a blower to force feed air into the motor isntead?
As for springs, would go with the .700's to buy you some over sling shot room with the motor reving at 8K.
As for springs, would go with the .700's to buy you some over sling shot room with the motor reving at 8K.
Race Director
Joined: Mar 2011
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From: SW Florida
2021 C6 of the Year Finalist - Modified
Racer
Joined: Oct 2006
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From: FL
