Ported heads with stock cam?
Along these same lines, how much would you want to mill the heads on a stock cammed setup...I guess I don't know what the DCR is stock, so I wouldn't know what it would go up to with milling.
Stock DCR with 98-00 cam is around 7.0:1
You can mill to 59cc and still stay not approach 8.5:1 DCR with stock cam. Milling is a great idea when doing heads-only.
You can mill to 59cc and still stay not approach 8.5:1 DCR with stock cam. Milling is a great idea when doing heads-only.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Originally Posted by MeentSS02
Wow...didn't know stock DCR was that low...is it the same for the 01-02 cams?
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Originally Posted by 2000TransAmWS6
while i would agree with you that you can add a "stealth" cam and pick up your power alot more, i would have to disagree that the main benefit of the heads are lost with a stock cam. just because you're not getting to the peak flow of the heads doesn't mean that they're not able to help make alot more power. with a set of aftermarket heads your flow is also increased at the lower lift values (.200+) and you're essentially able to fill the cylinders with air and fuel easier. so essentially the main benefit of the heads are still being used, just that they are not used at the peak flow.
i did heads only on the wife's car. picked up 37 rwhp. drove and sounded like stock. just with the added hp. yeah yeah, more expensive than doing a cam only. to each their own.
before/after head swap stock tune
then tuned with the VHP tuner
before/after head swap stock tune
then tuned with the VHP tuner
I considered going this way for a long time, and was going to go with the Crane 1.8 rockers rather then the cam change. I spent a lot of time looking into it and thought it was a good way to go.
Teching In
Joined: Mar 2022
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Haven't seen Pat G on here in awhile but for cylinder heads I'd contact Texas Speed and Performance and see what they can do for you on a factory casting or maybe go for their PRC castings.
ultimate-chevrolet-ls-cylinder-head-test notice how closely the majority of the heads performed in the test.
I'd favor a set of ported 5.3 heads by Total Engine Airflow or Texas Speed & Performance as best bang for the buck.
Next a set of ported LS6/243/799's Total Engine Airflow or Texas Speed & Performance.
If budget is bigger a nice set of Trick Flow's.
Even a little cam like a Lingenfelter GT2-3 will gain another ~30whp to 35whp in addition to the gains for ported heads and basically drive like stock.
Last edited by 99 Black Bird T/A; Mar 16, 2022 at 02:15 PM.
