[Z06] Trunnion upgrade....
08-09-2016, 08:40 AM
#61
Pro
Got an answer back from YT on this for you...
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Just heard back from Texas Speed. According to Jason, the 6670 LS7 rocker fits the head “just fine”. I cannot confirm nor deny this because our R&D department has not actually tested the fitment of the rockers against the head. Best I can do.
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Just heard back from Texas Speed. According to Jason, the 6670 LS7 rocker fits the head “just fine”. I cannot confirm nor deny this because our R&D department has not actually tested the fitment of the rockers against the head. Best I can do.
Last edited by long_tall_texan; 08-09-2016 at 08:41 AM.
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Undy (08-09-2016)
08-09-2016, 08:50 AM
#62
Safety Car
Member Since: Dec 1999
Location: Virginia Beach, VA & Port Charlotte, FL (snowbird)
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Got an answer back from YT on this for you...
----
Just heard back from Texas Speed. According to Jason, the 6670 LS7 rocker fits the head “just fine”. I cannot confirm nor deny this because our R&D department has not actually tested the fitment of the rockers against the head. Best I can do.
----
Just heard back from Texas Speed. According to Jason, the 6670 LS7 rocker fits the head “just fine”. I cannot confirm nor deny this because our R&D department has not actually tested the fitment of the rockers against the head. Best I can do.
I'm running Katech's Torquer 110 and they spec/use the PSI 1511 springs for that application. Open pressure of those springs are 380lbs, well withing YT's max open pressure rating. I currently have TSP's .675" springs and will be swapping them for the PSIs and YTs at my next wiggle test.
08-09-2016, 10:05 AM
#63
Got an answer back from YT on this for you...
----
Just heard back from Texas Speed. According to Jason, the 6670 LS7 rocker fits the head “just fine”. I cannot confirm nor deny this because our R&D department has not actually tested the fitment of the rockers against the head. Best I can do.
----
Just heard back from Texas Speed. According to Jason, the 6670 LS7 rocker fits the head “just fine”. I cannot confirm nor deny this because our R&D department has not actually tested the fitment of the rockers against the head. Best I can do.
Before ordering I would take a good look at your stock arms. If they're close to the casting wall of the head on the pushrod side. The 6670s will hit.
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long_tall_texan (08-09-2016)
08-09-2016, 10:17 AM
#64
Pro
I can tell you for a fact the 6670s did not fit my prc heads from Texas speed last year. I had a very spirited conversation with themy about this. I was told I didn't tell them I was running those rockers so they did not put clearance in the head for them.
Before ordering I would take a good look at your stock arms. If they're close to the casting wall of the head on the pushrod side. The 6670s will hit.
Before ordering I would take a good look at your stock arms. If they're close to the casting wall of the head on the pushrod side. The 6670s will hit.
08-09-2016, 11:42 AM
#65
Le Mans Master
I can tell you for a fact the 6670s did not fit my prc heads from Texas speed last year. I had a very spirited conversation with themy about this. I was told I didn't tell them I was running those rockers so they did not put clearance in the head for them.
Before ordering I would take a good look at your stock arms. If they're close to the casting wall of the head on the pushrod side. The 6670s will hit.
Before ordering I would take a good look at your stock arms. If they're close to the casting wall of the head on the pushrod side. The 6670s will hit.
Last edited by RedZ4me; 08-09-2016 at 11:42 AM.
08-09-2016, 01:04 PM
#66
Much appreciated...
I'm running Katech's Torquer 110 and they spec/use the PSI 1511 springs for that application. Open pressure of those springs are 380lbs, well withing YT's max open pressure rating. I currently have TSP's .675" springs and will be swapping them for the PSIs and YTs at my next wiggle test.
I'm running Katech's Torquer 110 and they spec/use the PSI 1511 springs for that application. Open pressure of those springs are 380lbs, well withing YT's max open pressure rating. I currently have TSP's .675" springs and will be swapping them for the PSIs and YTs at my next wiggle test.
08-09-2016, 01:05 PM
#67
Team Owner
Noticed a few psi1511 springs breaking recently. Good luck with them if you go that route.
08-09-2016, 03:18 PM
#69
Team Owner
The following 3 users liked this post by Dan_the_C5_Man:
08-09-2016, 05:09 PM
#71
Team Owner
08-09-2016, 06:26 PM
#72
Le Mans Master
So.. I have to say there is no conclusive evidence that the spring failed before the rocker - I'd guess the opposite.
08-10-2016, 12:49 AM
#75
fact of life with valve springs.
08-10-2016, 12:31 PM
#76
The best wire to use is Peterson. Made in the USA. PAC is Peterson. PSI uses Peterson.
As usual, the spring failure is woefully lacking in details or logical failure analysis. Internet BS, once again.
As usual, the spring failure is woefully lacking in details or logical failure analysis. Internet BS, once again.
08-10-2016, 09:05 PM
#77
Team Owner
3 trunions done, 15 to go. I'm amazed at the metal dust and wear on all the comp trunions. Glad I'm getting rid of them and going to the bronze ones.
https://goo.gl/photos/DXd6cQ9jtcx3uFLP9
https://goo.gl/photos/DXd6cQ9jtcx3uFLP9
Last edited by Unreal; 08-10-2016 at 09:17 PM.
08-11-2016, 11:54 AM
#79
Melting Slicks
Member Since: Nov 2009
Location: Klein TX
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2023 C6 of the Year Finalist - Unmodified
2022 C6 of the Year Finalist - Unmodified
Good save. Miles on the Comps? What spring press & lift?
18 trunnions? Must be the top secret LSX V9!
18 trunnions? Must be the top secret LSX V9!
08-11-2016, 02:07 PM
#80
Team Owner
Not 100% sure on miles, but between 10-15k. PRC 650 springs for majority, Pac 1207 for last ~1500 miles.
Yes, I run extra rockers to account for heavier valves.
Yes, I run extra rockers to account for heavier valves.