Comp valve spring question
Comp valve spring question My current set up includes a MTI Stealth II cam w/.581 lift and stock heads with Comp 915 springs. This winter the engine comes out for a new clutch, stage 2 5.3l ported heads, and LT headers.
My question is, I got the heads with no springs on them and since they seem to be doing fine on the stock heads and only have a few k on them, I was thinking about transfering them to the ported heads. Any body got an opinion on if they are adaquate for my new set up or should I go for a better spring. Typically the motor dosn't get run too hard, rev limiter is set at 6200 RPM, and I might goto the track maybe once a year. It's main task is as a DD.
Re'
My question is, I got the heads with no springs on them and since they seem to be doing fine on the stock heads and only have a few k on them, I was thinking about transfering them to the ported heads. Any body got an opinion on if they are adaquate for my new set up or should I go for a better spring. Typically the motor dosn't get run too hard, rev limiter is set at 6200 RPM, and I might goto the track maybe once a year. It's main task is as a DD.
Re'
The 915's are light springs that will float with a decent sized cam, I'm surprised you haven't had any with your current cam. I ran the 915's about 6 years ago with a small cam, but when I went to a TR 224 I had float with them.TSP duals for <$300 are great.
I would get the PAC 1518's if you are going to swap. They are an endurance spring and have surface treatments for longer life. The use of the 915's, if they are OK now, will likely be a function of the valve weight in the new setup vs. the old. You may be able to just buy titanium retainers (if you don't have them already) and continue to use the springs.
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