Using dual valve springs .. Titanium retainers really needed?
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Joined: Nov 2001
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From: SW Florida
Using dual valve springs .. Titanium retainers really needed? Hello ...
I have a 2011 Corvette with the LS3 engine. I plan to do a cam swap. Lift on both intake and exhaust will be .609"
I am using 'Brian Tooley' Platinum dual valve springs.
The question is ... Although the titanium retainers are only $50 more than the steel retainers, do you think they are really needed in a street car where the engine RPM will be kept no higher than 6,400 revs?
Thanks
Ron
.
I have a 2011 Corvette with the LS3 engine. I plan to do a cam swap. Lift on both intake and exhaust will be .609"
I am using 'Brian Tooley' Platinum dual valve springs.
The question is ... Although the titanium retainers are only $50 more than the steel retainers, do you think they are really needed in a street car where the engine RPM will be kept no higher than 6,400 revs?
Thanks
Ron
.
Last edited by Tin Indian; Jun 12, 2014 at 11:28 AM.
Hey Ron, long time no speak!
I look at the assembly weight to make the decision. For example a stock LS1 or LS2 has a 100 gram intake valve, and I use that as my "baseline".
Our steel retainers with stock locks are as light as the old Patriot titanium retainers, so they're fairly light. Our titanium retainers are 5 grams lighter than our steel retainers.
A LS3 has a intake valve of weight of 89 grams, in which case even with the 5 gram heavier steel retainers, the assembly is still 6 grams lighter than a LS1/2 with titanium retainers.
A L99/LSA/L92 has solid stem intake valves that weigh about 112 grams, so we always recommend the titanium retainers for those applications.
I hope this helps!
I look at the assembly weight to make the decision. For example a stock LS1 or LS2 has a 100 gram intake valve, and I use that as my "baseline".
Our steel retainers with stock locks are as light as the old Patriot titanium retainers, so they're fairly light. Our titanium retainers are 5 grams lighter than our steel retainers.
A LS3 has a intake valve of weight of 89 grams, in which case even with the 5 gram heavier steel retainers, the assembly is still 6 grams lighter than a LS1/2 with titanium retainers.
A L99/LSA/L92 has solid stem intake valves that weigh about 112 grams, so we always recommend the titanium retainers for those applications.
I hope this helps!
Last edited by Brian Tooley Racing; Jun 13, 2014 at 12:44 PM.
I think ti retainers are needed. These things are not old school sbc's. I also think you should not waste your time and effort with any cam change if you only want to turn it 6400.
Thread Starter
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Joined: Nov 2001
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From: SW Florida
Thanks a bunch Brian ... Yes, it's been quite awhile since we talked last, and in fact the last time we did business was when I had you did the heads on my LS1 for my (then new) 98 Trans Am ... and that really was a long long time ago!
________________________________
Anyway, I might order a custom grind 'Comp Cams' from you and the kit that includes the .660" dual Platinum springs, retainers, locators, locks, pushrods and seals.
Again the car is a 2011 GS (A6) with Pfadt headers w/cats. Everything else is stock.
________________________________
LSL-13095 Intake Lobe
LXL-13159 Exhaust Lobe
Duration
221 / 230
Lift
.609” / .609”
LSA
115
ICL
113
Overlap should be -4.5 degrees (smooth idle)
________________________________
Anyway, I might order a custom grind 'Comp Cams' from you and the kit that includes the .660" dual Platinum springs, retainers, locators, locks, pushrods and seals.
Again the car is a 2011 GS (A6) with Pfadt headers w/cats. Everything else is stock.
________________________________
LSL-13095 Intake Lobe
LXL-13159 Exhaust Lobe
Duration
221 / 230
Lift
.609” / .609”
LSA
115
ICL
113
Overlap should be -4.5 degrees (smooth idle)
Thread Starter
TECH Fanatic
Joined: Nov 2001
Posts: 1,975
Likes: 2
From: SW Florida
Right now, it maxes at 405 rwhp (SAE) at 5,800 rpm.
Ok....if it were me I would be looking to shift about 7000 for a engine I change the cam it.....I spin my stock cammed ls6 to 7k. I try to shift about 6800-6900. To be honest I've been thinking about moving the limiter to 7200 because it carries the power well after peak. Being able to pull the lower gear longer is where alot of acceleration is gained.
Right, a SBC steel retainer might be 30-40 grams and a SBC titanium retainer might be 20+ grams.
The LS steel retainers we sell are 13.7 grams.
Check out the pics of our steel retainers versus our competitors here: http://www.briantooleyracing.com/660...s-sk001-s.html
The LS steel retainers we sell are 13.7 grams.
Check out the pics of our steel retainers versus our competitors here: http://www.briantooleyracing.com/660...s-sk001-s.html
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Verdad Gallardo Thread Starter
TECH Fanatic
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From: SW Florida
Thread Starter
TECH Fanatic
Joined: Nov 2001
Posts: 1,975
Likes: 2
From: SW Florida
Only the GS coupe with M6 tranny gets the dry sump.
No dry sump on the GS convertible (regardless of transmission)
No dry sump on the GS coupe with A6 transmission
_________________________________
BTW ... here is a list of what all the Corvette GS cars get. It's called the Z16 Performance package, and all GS cars get it as standard equipment:
No dry sump on the GS convertible (regardless of transmission)
No dry sump on the GS coupe with A6 transmission
_________________________________
BTW ... here is a list of what all the Corvette GS cars get. It's called the Z16 Performance package, and all GS cars get it as standard equipment:
Last edited by Tin Indian; Jun 12, 2014 at 06:08 PM.
Hey Ron, long time no speak!
I look at the assembly weight to make the decision. For example a stock LS1 or LS2 has a 100 gram intake valve, and I use that as my "baseline".
Our steel retainers with stock locks are as light as the old Patriot titanium retainers, so they're fairly light. Our titanium retainers are 5 grams lighter than our titanium retainers.
A LS3 has a intake valve of weight of 89 grams, in which case even with the 5 gram heavier steel retainers, the assembly is still 6 grams lighter than a LS1/2 with titanium retainers.
A L99/LSA/L92 has solid stem intake valves that weigh about 112 grams, so we always recommend the titanium retainers for those applications.
I hope this helps!
I look at the assembly weight to make the decision. For example a stock LS1 or LS2 has a 100 gram intake valve, and I use that as my "baseline".
Our steel retainers with stock locks are as light as the old Patriot titanium retainers, so they're fairly light. Our titanium retainers are 5 grams lighter than our titanium retainers.
A LS3 has a intake valve of weight of 89 grams, in which case even with the 5 gram heavier steel retainers, the assembly is still 6 grams lighter than a LS1/2 with titanium retainers.
A L99/LSA/L92 has solid stem intake valves that weigh about 112 grams, so we always recommend the titanium retainers for those applications.
I hope this helps!
The red sentence of you above is confusing to me...can you explain please?
Christian
Also, more pics here, scroll down to pics #4 & #5
https://ls1tech.com/forums/new-produ...its-219-a.html
