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  • Valve spring height

    So I decided on a set of PSI 1511's that are on the way from BTR as I type this. They will be replacing a 12 year old set of Comp 987's (albeit only 12000 miles) that are still holding up, but are making me nervous.*

    My question is, what install height do you think would work best on a cam with only .569 lift (TR227)? I've read dozens of topics about this, mostly with regard to Comp 918's, but couldn't find a solid answer. I feel like they'd be ok installed at 1.800, as the seat and open load of the PSI's is greater than the 987's. Perhaps it'd be safer to install at 1.750 since I have such a low lift cam?

    Sorry for rambling on, and thanks in advance for the feedback!

    Sent from my Nexus 5X using Tapatalk
    2002 Pontiac Trans Am WS6 (Tang)

    Mods: Fikse Profil 10, GTP stage 2 heads, TR227 cam, Kooks 1 3/4 headers with ORY, Corsa catback, SLP Blackwing lid, SLP smooth bellows, Thunder Racing CNC ported stock throttle body, BG Ram Air, GM 4.10's in 10 bolt, B&M Ripper shifter, ATI 25% UD Super Damper, BMR Suspension, Tuned by Dr. Phil

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