Springs for EPS 226/230
10-10-2011, 11:51 PM
#22
What about the PSI beehives that are sold from Advanced Induction? That is what they are recommending to me when I get their valve job and cam done. Although I do not know what cam they are going to design for me yet. According to AI, they are the best beehive in the market.
Looking at the spring options on AI's site, they call them the 1511 spring and they provided a link to the PSI spec sheet, which after looking at it I'm assuming PSI's part number is LS11511ML.
Here's the spring spec sheet from PSI's site.
http://www.psisprings.com/index.php?...ask=view&id=17
Looking at the spring options on AI's site, they call them the 1511 spring and they provided a link to the PSI spec sheet, which after looking at it I'm assuming PSI's part number is LS11511ML.
Here's the spring spec sheet from PSI's site.
http://www.psisprings.com/index.php?...ask=view&id=17
PSI 1511's are hands down the best beehive spring in existence. I've shimmed a set that took .664 lift not too long ago.
http://www.cvproducts.com/Products/PSILS1511ML.aspx
http://www.cvproducts.com/Products/PSILS1511ML.aspx
10-11-2011, 10:37 AM
#24
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I don't understand how a dual can cause loss of lift. Your lifter, pushrod, rocker, and valve are all going to going to move in direct corelation to the cam. Spring tension doesn't affect the mechanics of the lift. Resistance/power loss sure, but I don't understand how it would affect the lift of the cam. If I'm missing something here please fill in the blanks.
Last edited by Camaro Z; 10-11-2011 at 10:46 AM.
10-11-2011, 12:20 PM
#25
In my twisted way of thinking, if the wrong pushrod was used and lifter preload was not checked then yes a dual spring with more seat pressure could hinder lift, but if everything is set up correctly then a dual spring or bee hive spring should not soley affect the gross lift. But what do I know lol. Geoff, I'm waiting on your chime in on this one
10-13-2011, 11:23 AM
#28
Don't forget about the PRC springs. They're proven performers & a much newer designed compared to the gold or platinum springs from years ago. Valve spring technology is a constantly advancing technology. 5 year old spring technology is just way way behind....
__________________
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
10-13-2011, 04:24 PM
#29
A quality beehive spring is ideal for this application.
__________________
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.
10-14-2011, 06:48 AM
#33
Negatives: increased sewing machine sounds coming from underhood, increased lifter wear, increased possibility of spring deflection.
__________________
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.
10-14-2011, 11:26 AM
#35
There is no blanket answer, or one size fits all.
Weight is a huge factor, for example I have seen a valvetrain going into valve float at 6800RPM with a standard LS1 valve. Then by ONLY changing to the hollowstem LS6 valve, the valvetrain was stable to 8400RPM. Remember its an entire system, adding lightweight valves, valve springs, or any other part wont ensure valvetrain stability to "x" amount of RPM.
10-14-2011, 03:57 PM
#37
I dont think it would be worth swapping, just to swap. If for some reason you need to swap springs, I would goto a beehive.
If your springs are good, the benificial thing to do would be to shim them correctly.
Dont worry about that, there is a lot of mis-information that get regurgitated so many times it become true(on the internet) and in peoples minds.
Who knows, I could be totally wrong and everyone else is right?!?!?!?!??!
If your springs are good, the benificial thing to do would be to shim them correctly.
Who knows, I could be totally wrong and everyone else is right?!?!?!?!??!
10-16-2011, 11:41 PM
#38
A local machine shop screwed up my heads when they installed the springs. Wrong spring height, not enough retainer to seal clearance, wrong seat locators, wrong seals. Now that I have learned how to set up a set of cylinder heads they will be dead nuts on when it goes back together. I had two of the 921's tested by Shane@Thunder Racing and they have 420lbs open pressure so they are in good shape. I talked to Shane about going with beehives and he said the 921's will work great once they are set up properly.