243 heads, valve events, PTV
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243 heads, valve events, PTV With a stock LS6, how many degrees from TDC can the EVC and IVO events get (@ 0.050) before PTV becomes a problem?
I realize the only way to really know is to measure, but I won't be able to do that until I've already bought the cam... So I'm looking for a rough idea before I buy the cam, in hopes of not buying a cam that fails that test.
Thanks!
I realize the only way to really know is to measure, but I won't be able to do that until I've already bought the cam... So I'm looking for a rough idea before I buy the cam, in hopes of not buying a cam that fails that test.
Thanks!
Thread Starter
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Joined: Jan 2018
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Your cam has 10 degrees IVO and 7 EVC, and I'm pretty sure mine will be closer to 6 and 2, so if yours works I'm in no danger.
I'm guesstimating at most 232/238 at 114+4, maybe a little smaller. Definitely nowhere near 17 degrees of overlap.
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From: White Bear, Mn
That's great, thanks... and that's huge. Are you really running that with 5.7 liters?
Your cam has 10 degrees IVO and 7 EVC, and I'm pretty sure mine will be closer to 6 and 2, so if yours works I'm in no danger.
I'm guesstimating at most 232/238 at 114+4, maybe a little smaller. Definitely nowhere near 17 degrees of overlap.
Your cam has 10 degrees IVO and 7 EVC, and I'm pretty sure mine will be closer to 6 and 2, so if yours works I'm in no danger.
I'm guesstimating at most 232/238 at 114+4, maybe a little smaller. Definitely nowhere near 17 degrees of overlap.
It really flies above about 6300 rpms. I spin it to 7100 and think it would love to be spun a bit higher but I'm still on stock rod bolts. Last season I was running a 4000 stall and the transmission let loose which is fine because my setup needed a bit more rpms on the shift extensions so I had it restalled to a 4400. Shooting for around 10.7 - 10.8 @ around 125 mph at close to full weight.
