Back from the dyno, out of timing and boost.

[GTPpower]

The 90#s being enough is definitely controversial. They have a very fast ramp rate and have proven to be very effective in the 3800 world. The biggest downfall is the ramp rate beats up the chains and dampeners. Luckily for me I pull the engine every season at least the last 2 and this winter again for a TEP trans so I do all that maintenance then.

As far as intercooler efficiency, you mean heat exchangers? I monitor all temps post blower and IC and under cool conditions add timing to the IAT tables or decrease them when hot just like an external IAT setup (just higher numbers) point being its running at 120ish degrees under boost which i find pretty decent. That should go down substantially with the meth.

I ran 90# springs for a year or 2 with the xp cam. I was always chasing kr problems and just suffered from a lack of power. As I started to learn more about valvetrain control and geometry, I took a closer look at my car. It was really easy to see how bad the valves were floating by watching the boost gauge and then comparing map vs maf. If kpa is increasing and the maf has stopped increasing, you have valve float. No one recommends running 90's with the xp anymore. Yeah, they used to, but that was before we found out how much power you pick up from heavier springs.

As far as the intercooler, you probably won't see much of a gain on the dyno. But on a 1/4 mile pass, I'd bet your temps are creeping. A better pump is needed to keep the fluid moving through. (The flojet people use doesn't flow anywhere close to enough.)

Your next upgrade would be the heat exchanger, but if imagine the frozen boost unit is pretty decent.

[94GrandPrixSE]

[QUOTE=GTPpower;1466687]I ran 90# springs for a year or 2 with the xp cam. I was always chasing kr problems and just suffered from a lack of power. As I started to learn more about valvetrain control and geometry, I took a closer look at my car. It was really easy to see how bad the valves were floating by watching the boost gauge and then comparing map vs maf. If kpa is increasing and the maf has stopped increasing, you have valve float. No one recommends running 90's with the xp anymore. Yeah, they used to, but that was before we found out how much power you pick up from heavier springs.

As far as the intercooler, you probably won't see much of a gain on the dyno. But on a 1/4 mile pass, I'd bet your temps are creeping. A better pump is needed to keep the fluid moving through. (The flojet people use doesn't flow anywhere close to enough.)

Your next upgrade would be the heat exchanger, but if imagine the frozen boost unit is pretty decent

Did you test your spring pressure after putting some miles on the 130#s? I remember Will saying this My personal experience with 130# CompCam in my own vehicle, when I had the springs tested during a head rebuild, the springs had weakened to 115# at 1.80" when they should be 130ish. I couldn't quote the mileage but it was roughly a year of service time. Very disturbing so I never ran them again.

[GTPpower]

[QUOTE=94GrandPrixSE;1466728]

I ran 90# springs for a year or 2 with the xp cam. I was always chasing kr problems and just suffered from a lack of power. As I started to learn more about valvetrain control and geometry, I took a closer look at my car. It was really easy to see how bad the valves were floating by watching the boost gauge and then comparing map vs maf. If kpa is increasing and the maf has stopped increasing, you have valve float. No one recommends running 90's with the xp anymore. Yeah, they used to, but that was before we found out how much power you pick up from heavier springs.

As far as the intercooler, you probably won't see much of a gain on the dyno. But on a 1/4 mile pass, I'd bet your temps are creeping. A better pump is needed to keep the fluid moving through. (The flojet people use doesn't flow anywhere close to enough.)

Your next upgrade would be the heat exchanger, but if imagine the frozen boost unit is pretty decent

Did you test your spring pressure after putting some miles on the 130#s? I remember Will saying this My personal experience with 130# CompCam in my own vehicle, when I had the springs tested during a head rebuild, the springs had weakened to 115# at 1.80" when they should be 130ish. I couldn't quote the mileage but it was roughly a year of service time. Very disturbing so I never ran them again.

No I didn't. They were older comp springs. I put I think over 50k on them, and never had a float problem again. It's going to depend a lot on the quality of the spring you buy. I wouldn't buy comps anymore. Pac and Manley seem to do well.