Milled GMPP head combo..
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From: The Confederacy
Milled GMPP head combo.. I've decided to keep my wife's WS6 so I'm going to "remod" it. I had some ported 241's and a mild cam in it before.. but sold all that stuff. I'm going to stick some extra parts I have around on it and see how it turns out. The only thing I'm concerned about is P/V clearance with the milled GMPP LS6 heads. Below is the combo..
GMPP true LS6 heads with Z06 valves and PRC Dual spring kit.. Milled .055
GM MLS gaskets
Comp 220/222 .581/.581 116lsa 115icl cam
Comp 7.35 pushrods
Pacesetter longtubes/offroad Ypipe into hooker catback
LS6 intake, ported TB, TSP lid
Powerbond underdrive pulley
TCI SSF3500 stall
Stock 10 bolt with 3.42's out of a 6 speed car
I want this thing to drive damn near stock. This is "her" car and she bitched alot with the last cam I had in there.. so I took it back to stock. I'm sure the little comp cam will give me a good idle and nice street manners. I'm just worried about the P/V clearance. I don't want to tear into this thing and have to flycut her pistons. Anybody want to venture a guess on my P/V concerns?
GMPP true LS6 heads with Z06 valves and PRC Dual spring kit.. Milled .055
GM MLS gaskets
Comp 220/222 .581/.581 116lsa 115icl cam
Comp 7.35 pushrods
Pacesetter longtubes/offroad Ypipe into hooker catback
LS6 intake, ported TB, TSP lid
Powerbond underdrive pulley
TCI SSF3500 stall
Stock 10 bolt with 3.42's out of a 6 speed car
I want this thing to drive damn near stock. This is "her" car and she bitched alot with the last cam I had in there.. so I took it back to stock. I'm sure the little comp cam will give me a good idle and nice street manners. I'm just worried about the P/V clearance. I don't want to tear into this thing and have to flycut her pistons. Anybody want to venture a guess on my P/V concerns?
Last edited by gomer; Feb 8, 2006 at 10:42 AM.
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From: New Zealand
Its gonna be pretty tight, I just put 0.060" milled heads on with TR224 cam 0.563 lift and only had 0.050 clearence on inlet side , plenty on exhaust side.
Ended up retarding cam timing 4deg and that streached cleareance out to 0.073 .
Just measure it up - you may need thicker head gaskets or a little tweeking with cam timing.
Ended up retarding cam timing 4deg and that streached cleareance out to 0.073 .
Just measure it up - you may need thicker head gaskets or a little tweeking with cam timing.
A While Back There Was A Guy Running An F11 Cam With Those Heads I Think You Should Be Fine.i Have Those Same Heads Im Going To Put Those On A 408 Lme Iron Block W/wiseco 7 Or 8cc Pistons Reworked About 3cc More To Lower Compression And Clearance.i Bought The Heads A Couple Years Back With Different Intentions,i Know There Going To Choke It Up Abit But Oh Well.brian At Lme Said I Should Be Fine With Clearance.THE CAM IS AN FMS 246 250 DUR. 627/633 LIFT AT A 112 +3 W/ COMETIC .45 GASKETS TO GET A 40 QUENCH.
Last edited by wicked z28; Feb 9, 2006 at 04:21 PM.
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From: The Confederacy
Originally Posted by Slowhawk
I'd be more worried about the intake lining up.The Cam will be tight depending on the lobe rate grind.
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Staging Lane
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From: Nortern Idaho
Originally Posted by gomer
It is an X-er cam. I can do some "slotting" if the intake acts like it won't line up. I've ran a set of these .055 milled heads with a Z06 cam on another car and the intake didn't have any trouble.
with Hotcam and 1.8rr's. I was concerned with P/V clearances when I did this
and didn't know as much about LS engines then. I'm thinking about a bigger cam so interested about the clearances.
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Last fall I got the same heads on an 02 LS1, Comp 224-228, 538 lift on a 112 LSA. Car already had Stainlessworks LT's with cats, LS-6 intake, stock TB (unported) and SLP pulley. Made 400 RWHP and about 370 RWTQ on a Mustang dyno. 
On street tires and no suspension mods went 12.80 @ 115.55.
Let us no how it works as I'm thinking about the Comp 228 - 230, 575 lift on a 112. If it would fit, would I get much benefit?
On street tires and no suspension mods went 12.80 @ 115.55.
Let us no how it works as I'm thinking about the Comp 228 - 230, 575 lift on a 112. If it would fit, would I get much benefit?
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From: The Confederacy
Originally Posted by slonomo
Last fall I got the same heads on an 02 LS1, Comp 224-228, 538 lift on a 112 LSA. Car already had Stainlessworks LT's with cats, LS-6 intake, stock TB (unported) and SLP pulley. Made 400 RWHP and about 370 RWTQ on a Mustang dyno.
On street tires and no suspension mods went 12.80 @ 115.55.
Let us no how it works as I'm thinking about the Comp 228 - 230, 575 lift on a 112. If it would fit, would I get much benefit?
On street tires and no suspension mods went 12.80 @ 115.55.
Let us no how it works as I'm thinking about the Comp 228 - 230, 575 lift on a 112. If it would fit, would I get much benefit?
I'm doing all of it this coming weekend of the 18th.. along with a Racetronix PnP fuel system, SVO 42lb injectors, and a dry nitrous kit. If the P/V issues work out ok.. I'll have numbers by that next Monday.