Blower Cam Specs - Mine too small?

[QC97Z]

Hey guys-

My motor is out of my car right now, sa I've decided to make a few changes and a couple of minor repairs, but they couldn't be done unless the motor was out of the car (steam pipe -AN fix).
My setup is pretty wild, and I'm curious as to why I'm not making more power than I am. The more I talk to people with superchargers, the more it seems my cam is pretty small.
It was custom spec'd by Lloyd Elliot. It's a 219/230 .565/.565 on 114 LSA.
The car was built to be a potent street car that may see some track time a couple of times a year. I refuse to put a cage in it, so I know tech will boot me every time for running too fast :devil:
If I'm going to change out the cam, now's the time (unless I pull the motor for something else in the future).
Any thoughts on a different or better cam for my setup?

Forged 383, -31cc pistons
AFR 210 Comp. Ported "eliminator" heads
1.6 Harland Sharp rockers
LS7 lifters
Edelbrock Air Gap LT4 intake
58mm TB
F1A Procharger w/ FMIC

648 RWHP, 585 TQ. 15psi at 6500 RPM.

My other question is this: If I went with a different cam, could my tune just be changed for the new cam specs, or would I need a full dyno tune again? I work with Speed Inc on my tune, and I'm about 3 hours away from there. I have to borrow a trailer every time I take it up there for dyno. If I can just send in the PCM, that would be ideal.

[thewizard]

How much more power are you looking to make?

[Fastbird]

On that kind of a setup....ALWAYS have it fully retuned when making a change to a component that will affect the VE of the motor.

I like the cam design. Looks great to me. If you wanted to go bigger, look for 230's/240's duration. remember that on a blower car a good NA cam will usually be a good blower cam.

[QC97Z]

How much more power are you looking to make?

MORE. 700-ish at the same-ish RPM and PSI.


On that kind of a setup....ALWAYS have it fully retuned when making a change to a component that will affect the VE of the motor.

I like the cam design. Looks great to me. If you wanted to go bigger, look for 230's/240's duration. remember that on a blower car a good NA cam will usually be a good blower cam.

Thanks for the tip. I'm just in doubt because there's others out there with less of a setup than me, and making almost as much power.
I may leave it alone.
However, I'm thinking about changing out for the 4.25 pulley, but I'm wondering how much boost it will make at the top end.
That also leads me to get this train of thought: With a bigger cam, it will flow more (provided that there's still room to flow in the heads). More flow would create less boost PSI with the same pulley and RPM. So, if I went with a bigger cam AND went with the smaller pulley, I'm wondering if I'd still make about the same boost at the same RPM, but just higher power numbers.
Am I even on the right track with my thought process? Or am I just batshit crazy?

[thewizard]

Sounds on track to me. When you say "bigger" though, a bunch more lift isn't going to help a lot with the blower. As mentioned by Fastbird, look into more duration, and possibly a smaller LSA for more top end power.

If you really want to get fancy throw some methanol at it with a good progressive controller and it will allow you to hopefully jack your WOT timing up a handful of degrees as well as adding great torque under the curve.

[QC97Z]

Sounds on track to me. When you say "bigger" though, a bunch more lift isn't going to help a lot with the blower. As mentioned by Fastbird, look into more duration, and possibly a smaller LSA for more top end power.

If you really want to get fancy throw some methanol at it with a good progressive controller and it will allow you to hopefully jack your WOT timing up a handful of degrees as well as adding great torque under the curve.

Thanks for the thought. And yes, when I said bigger, I was moreso meaning more duration and a slightly smaller LSA, only a bit more lift.
I'm thinking more like a 224/236, .585/.585 lift, 113 LSA.

I'm not really interested in Methanol, it's just not something I want to do to further complicate the setup. My main idea behind my build was to make big power with a fairly simple setup.

[ZGOBYBY]

I'm looking into running the LPE 74219 cam which is 219/219 .560/.560 112 LSA, good cam for F/I from what I have heard. I wanted something with a small LSA, so I thought this sounded pretty good.

[RealQuick]

Thanks for the thought. And yes, when I said bigger, I was moreso meaning more duration and a slightly smaller LSA, only a bit more lift.
I'm thinking more like a 224/236, .585/.585 lift, 113 LSA.

I'm not really interested in Methanol, it's just not something I want to do to further complicate the setup. My main idea behind my build was to make big power with a fairly simple setup.

I think you'll be wasting money by switching out to that mild of a cam. You might as well leave in what you got and pulley up the blower to see what happens.

Now, if you wanted to go bigger, the 23x/24x is probably the way to go with lift in the .590-.610 range to compliment the head flow.

[QC97Z]

Man...the temptation is killing me.
But then I'd have to have it tuned again...:cry:

[AChotrod]

Speedinc will hook ya up cheap. You dont need to pay the full cost again.

[QC97Z]

Even so, I'm not sure if I have the time (vacation time from work) or the resources ($ for gas and tune, and borrowing a trailer AGAIN) to have it tuned again. Although this would be a great time to change out the cam, I think at this time I'll have to leave it alone. Maybe next year or something.

[MoeHorsePower]

Just so you can compare, Mine was 383 LT, 12lbs Boost, Supercharged, 9.4.1 compression, Ported LT4 Intake/Heads, cam 230/244, 612/615 lift on a 112 LSA, made 648 RWHP/612 Tq on Pump Gas.

[QC97Z]

hmmm....I'm boosting just a bit more, also on pump gas, with a smaller cam, and making just as much power. Just a bit less torque though.

Moe - Check out my other post "to pulley or not to pulley" and see what you think. It's been up a couple of days and I haven't gotten any responses.