Yes it's floating the valves between 6k-6500. If I had the dyno sheet here I could show ya... I'll post it later this evening.
Fighting valve float -- Trunion Kit?
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 835
Likes: 21
From: Mooresville NC
Fighting valve float -- Trunion Kit?
Hey guys,
My car is floating up top and I've decided on the following to help resolve the issue:
BTR .660 Spring Kit w/ Steel Retainers
Comp Cam Push Rods
Should I go ahead and upgrade the trunion on the rockers? Wasn't sure if I might as well attack that while I'm in there or not.
Car is an LS3 crate motor with a GM HotCam installed currently.
Thanks!
My car is floating up top and I've decided on the following to help resolve the issue:
BTR .660 Spring Kit w/ Steel Retainers
Comp Cam Push Rods
Should I go ahead and upgrade the trunion on the rockers? Wasn't sure if I might as well attack that while I'm in there or not.
Car is an LS3 crate motor with a GM HotCam installed currently.
Thanks!
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
If you're fighting valve float I'd highly recommend the Ti retainers to keep the valvetrain weight as low as possible. Not like the trunion upgrade will do anything for the float but it's cheap insurance against losing needle bearings in your motor. The swap is easy and quite fun actually.
Hey guys,
My car is floating up top and I've decided on the following to help resolve the issue:
BTR .660 Spring Kit w/ Steel Retainers
Comp Cam Push Rods
Should I go ahead and upgrade the trunion on the rockers? Wasn't sure if I might as well attack that while I'm in there or not.
Car is an LS3 crate motor with a GM HotCam installed currently.
Thanks!
My car is floating up top and I've decided on the following to help resolve the issue:
BTR .660 Spring Kit w/ Steel Retainers
Comp Cam Push Rods
Should I go ahead and upgrade the trunion on the rockers? Wasn't sure if I might as well attack that while I'm in there or not.
Car is an LS3 crate motor with a GM HotCam installed currently.
Thanks!
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 835
Likes: 21
From: Mooresville NC
Phew! Sure am glad that I posted here before I hit the purchase button! lol...
Would I achieve any benefit by just upgrading the rockers at the same time? I only want to do it once if I'm going to do it. (I only drive the car about 5-7k a year)
Thanks!
Would I achieve any benefit by just upgrading the rockers at the same time? I only want to do it once if I'm going to do it. (I only drive the car about 5-7k a year)
Thanks!
Burning Brakes
Joined: Apr 2007
Posts: 972
Likes: 11
From: Dawsonville, GA
IIRC, the factory rockers are already pretty lightweight.
I've read many stories about aftermarket rockers being heavier than the stock rockers and causing valve float issues.
Good valvesprings and lightweight retainers are usually a good option... and alot of guys actually seem to prefer the stock rockers.
I've read many stories about aftermarket rockers being heavier than the stock rockers and causing valve float issues.
Good valvesprings and lightweight retainers are usually a good option... and alot of guys actually seem to prefer the stock rockers.
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 835
Likes: 21
From: Mooresville NC
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Burning Brakes
Joined: Apr 2007
Posts: 972
Likes: 11
From: Dawsonville, GA
Your trunnion question wasn't exactly a question I'd expect from a well-seasoned throttle jockey.
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 835
Likes: 21
From: Mooresville NC
Racer
Joined: Sep 2012
Posts: 290
Likes: 0
From: Auburn Alabama
I'd say definitely do the trunions! why wouldn't you? Since you'll have it apart it's the perfect time for a cheap and easy upgrade! You don't want the stock careless needle bearings to explode all throughout your motor!
Melting Slicks
Joined: Apr 2007
Posts: 2,987
Likes: 16
From: Phoenix
I too have read about some failures with the upgraded trunnions. I don't know if it's an install issue or a bad component. You can do some searching and see pics where they look galled. I personally just left my rockers stock and I usually shift around 6700-6800rpm with a 7000rpm rev limit. I'm using the BTR dual springs with tool steel retainers also.
Le Mans Master
Joined: Sep 2003
Posts: 6,276
Likes: 227
From: Farmington CT
Cruise-In VII Veteran
http://forums.corvetteforum.com/c6-f...-a-rocker.html
How did the heads/chambers look during the lifter replacement
How did the heads/chambers look during the lifter replacement
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 835
Likes: 21
From: Mooresville NC
http://forums.corvetteforum.com/c6-f...-a-rocker.html How did the heads/chambers look during the lifter replacement
the valve float is on a brand new motor.