Pimpium57

iTrader: (104)

Help guys, I'm building my '01 M6 car as a weekend street warrior. I've decided to stay low-profile with a Z06 or other small cam to accompany the full bolt-ons, suspension and spray.

I'm looking to spend as little money as possible on the heads while still seeing some *decent* gains. Would you guys recommend porting my stock 241 heads or grabbing a pair of used, untouched 243 LS6 heads? Would there be siginificant gains in porting the LS6s compared to untouched ones? Any other suggestions or advice would be appreciated. Thanks!

mike c.

iTrader: (1)

if you going to spend all that time,why would you put in a zo6 cam? the power difference is not worth it. low profile if you want a small cam a 224/114 lob would drive and idle way close to stock,but make more power. in a few weeks i have a set of ported heads comming off my car. they are r.g.r st2 heads from speed inc(look on their web page)they are ls1 heads and have 2.02 1.57 valves and have new comp 921 springs in them. i'm selling for around $1,000 i made 424hp with a 224 cam and want 11's on motor. i'm selling becausi i now own arf heads.

white2001s10

iTrader: (4)

How about the LPE GT2-3 camshaft.
207/220 .571/.578 w 1.7 rocker 118.5 CL

Really good quality head work with the porting and valve job should be well worth the trouble power-wise with either head you decide to go with.
The LS6 has the advantage, but of course more money than porting your stockers.

JBsZ06

I'd say buying worked ls1 heads mentioned in the above post for a grand plus the 224/224 114lsa cam would be the best way to go ..

Lots of guys are always selling mild cams like that on this site from what I see in the used parts section...

Good luck...

caminls1

How much power difference is there between the LPE GT2-3 and the TR 224? Wouldn't the GT2-3 work better on the bottle because of the difference in intake/exhaust duration?

white2001s10

iTrader: (4)

a longer period cam will always make more power on a dyno than a smaller one, but the question you've got to ask is which one will make your car run quicker and how you want it to.
Splits like that with a wide LSA generally do produce better on the bottle.

Pimpium57

iTrader: (104)

Thanks for the input so far guys, I'm leaning towards the LPE cam with some ported LS6s. Another question tho, comparing the 224/224 and the 224/228........the /224 would be better for NA and the /228 for the bottle, but what power band and peak gains would be produced while BOTH off the bottle?

white2001s10

iTrader: (4)

Not that easy to predict at all. You'd have to know and post the exact opening and closing events for each one.
The 228 on the exhaust may actually have the exhaust open later than the 224 cam.
The exact points of opening and closing determine more how the cam will perform than just given the periods of each.

Pimpium57

iTrader: (104)

Like I said, I'm pretty much set on the LPE GT2-3. When it comes to the heads, how do I know how far to go without being overkill? I get really lost when it comes to choosing them. Since it's a small cam, would I benefit well enough from ported stockers or mildly ported LS6s compared to, say, heavily worked LS6s or AFRs?

equandt

iTrader: (2)

LPE CNC's the GMPP LS6 heads. These heads would be killer with the GT2-3 cam.

Other good heads would be a set of TEA 5.3 stage 1.5 heads.

With the smaller street cam you'll want to focus on getting a head with a relatively small port volume (<225) and get your compression in the 10.8 - 11.0 range.