BTR v2 trunnion kit
Pro
Joined: Mar 2005
Posts: 623
Likes: 7
From: Bakersfield CA
In the last 20 years I've modded at least 10 of my personal cars with LS engines.
The only rocker issues I EVER had was with aftermarket pieces, trunions or (god help you) full aftermarket rockers.
Had a supercharged AWD Trailblazer SS that went 11.15 at the track and made probably 300 passes, all on stock rockers.
Current car is an LS3 swapped 68 Camaro that goes 9.80's. Stock Rockers.
Just my .02
The only rocker issues I EVER had was with aftermarket pieces, trunions or (god help you) full aftermarket rockers.
Had a supercharged AWD Trailblazer SS that went 11.15 at the track and made probably 300 passes, all on stock rockers.
Current car is an LS3 swapped 68 Camaro that goes 9.80's. Stock Rockers.
Just my .02
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
Well just to update you guys, I changed the rockers out for new oem rockers with the BTR v2 trunnions, as well as went down to a 7.400 pushrod to get my preload closer to what Johnson calls for. Overall I believe there was some slight improvement in valvetrain noise with the new rockers which is not surprising because the CHE trunnions seemed to be wearing and causing too moved movement. However, that same damn pecking noise is still on the driver side on cylinder 1, it just refuses to go away so I guess I’m stuck with it. The passenger side sounds great but the driver side not so much.
Le Mans Master
Joined: Dec 2013
Posts: 6,337
Likes: 5,113
From: Charles Town WV
2024 Corvette of the Year Finalist - Modified
2023 C6 of the Year Winner - Modified
2022 C6 of the Year Finalist - Modified
I feel your pain brother, still in the same boat myself. 7.425s didnt help. Think im gonna pull the heads this winter and do johnsons and hope that finally shuts it up.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
I was just thinking about yours the other day and was wondering if you had figured anything out. That sucks the pushrods didn’t help. Hopefully the Johnson lifters will fix it and if nothing else you’ll have a really good set of lifters in it.
Ive just come to the conclusion I’m just going to have to settle with mine, there’s really nothing else I can do. There’s obviously something not happy on the drivers side and it pretty much has to be a lifter bore issue or maybe a bad valve guide. Either way I’m not spending the extra money to go back into it. At least not anytime soon.
Le Mans Master
Joined: Dec 2013
Posts: 6,337
Likes: 5,113
From: Charles Town WV
2024 Corvette of the Year Finalist - Modified
2023 C6 of the Year Winner - Modified
2022 C6 of the Year Finalist - Modified
Yeah man honestly this car has pushed me to my breaking point. I’ve spent so much time and money trying to just get it to sound normal but I am giving up on it. It just sucks because I can’t enjoy driving the car, all I hear when I drive it is the loud ticking. I don’t know what else to do though….
I was just thinking about yours the other day and was wondering if you had figured anything out. That sucks the pushrods didn’t help. Hopefully the Johnson lifters will fix it and if nothing else you’ll have a really good set of lifters in it.
Ive just come to the conclusion I’m just going to have to settle with mine, there’s really nothing else I can do. There’s obviously something not happy on the drivers side and it pretty much has to be a lifter bore issue or maybe a bad valve guide. Either way I’m not spending the extra money to go back into it. At least not anytime soon.
I was just thinking about yours the other day and was wondering if you had figured anything out. That sucks the pushrods didn’t help. Hopefully the Johnson lifters will fix it and if nothing else you’ll have a really good set of lifters in it.
Ive just come to the conclusion I’m just going to have to settle with mine, there’s really nothing else I can do. There’s obviously something not happy on the drivers side and it pretty much has to be a lifter bore issue or maybe a bad valve guide. Either way I’m not spending the extra money to go back into it. At least not anytime soon.
I feel ya man, thats where I was at with it, want to do the johnsons either way for insurance but if it fixes the sound thatll be good. If not I guess ill just have to deal with it until its time to build a motor for it. Def feel your frustration though trust me. Its super agitating. Everyone assures me they dont hear it when their behind me or along side but... I hear it and thats enough lol
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
I feel ya man, thats where I was at with it, want to do the johnsons either way for insurance but if it fixes the sound thatll be good. If not I guess ill just have to deal with it until its time to build a motor for it. Def feel your frustration though trust me. Its super agitating. Everyone assures me they dont hear it when their behind me or along side but... I hear it and thats enough lol
It’s beyond frustrating tho, I just want the car to sound normal. I have been plagued with owning cars with noisy motors in the past, not sure what I’ve done to deserve this lol. But I can hear mine tapping away with the hood closed standing 10ft away from it, I mean it’s not terribly loud but def loud enough for my to clearly hear it inside the car driving down the road and that’s enough to kill the enjoyment of driving it. I def have pretty significant sewing machine noise and when I drive near a guard rail or something it’s very noticeable but that’s just an inherent noise of a cammed LS…. But I hear that tapping on the drivers side over the sewing machine noise and it’s torture. I’ve even thought about changing out the cam to a less aggressive lift cam and see if that’s gets rid of it. Maybe like a .600 lift Texas Speed cam
Le Mans Master
Joined: Dec 2013
Posts: 6,337
Likes: 5,113
From: Charles Town WV
2024 Corvette of the Year Finalist - Modified
2023 C6 of the Year Winner - Modified
2022 C6 of the Year Finalist - Modified
Yeah i debated changing cams again too, I never had this problem with my TSP stage 1, I just love the power curve on the BTR stage 2 and hate to loose that.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
I might do like a custom cam from cam motion with lower lift, or possibly a Texas speed cam.
i’ve spent so much money in the past year chasing this down that a new cam will have to wait a while because I’ll have to have a shop install it and then tune it, but if I don’t sell the car first that’s probably the route I will go.
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Le Mans Master
Joined: Dec 2013
Posts: 6,337
Likes: 5,113
From: Charles Town WV
2024 Corvette of the Year Finalist - Modified
2023 C6 of the Year Winner - Modified
2022 C6 of the Year Finalist - Modified
Yeah i have to agree, i see this complaint alot with this cam and it makes me wonder. I debated going to a GPI SS1 when i do the lifters, I would have done it last time but I was impatient and BTR was in stock. Not knocking BTR either, they were great to work with and got me everything i needed basically overnight.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
If you guys do change out your cam, I'd highly recommend limiting lift to .620 and letting Cam Motion grind your cam. My cam is a custom grind done by them with .620 lift on both sides. It has close to 50K miles on it now. I'm running stock LS3 rocker arms. I changed them out at 30K miles when I changed the valve springs. I consider both to be wear items.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
If you guys do change out your cam, I'd highly recommend limiting lift to .620 and letting Cam Motion grind your cam. My cam is a custom grind done by them with .620 lift on both sides. It has close to 50K miles on it now. I'm running stock LS3 rocker arms. I changed them out at 30K miles when I changed the valve springs. I consider both to be wear items.
I thought about limiting the lift to .600 maybe less on my next cam. The TSP bald eagle cam has a lower lift at 229/242 .600"/.600" 112 LSA 109 ICL
That might be a decent choice. But most Likely I’ll call Cam Motion, GPI or Tick Performance and have them spec me a custom cam
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
these are the specs on my cam. Specs: 225/238 .620"/605" 113+3
I thought about limiting the lift to .600 maybe less on my next cam. The TSP bald eagle cam has a lower lift at 229/242 .600"/.600" 112 LSA 109 ICL
That might be a decent choice. But most Likely I’ll call Cam Motion, GPI or Tick Performance and have them spec me a custom cam
I thought about limiting the lift to .600 maybe less on my next cam. The TSP bald eagle cam has a lower lift at 229/242 .600"/.600" 112 LSA 109 ICL
That might be a decent choice. But most Likely I’ll call Cam Motion, GPI or Tick Performance and have them spec me a custom cam
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia
Soft ramp rates can be more important than total lift when you're after long life and a quiet valvetrain. That's why I won't use any cam that's not ground by Cam Motion. Not saying that other companies' cams aren't a good option, just that I know what I'm getting with CM.
I took my my car out again last night and the metallic tapping noise on the drivers side is even worse now, it sounds terrible. Everything under the valve covers is tight and looks fine. I’m so aggravated with this car!
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
I have no idea who grinds BTR’s cams now. It used to be Comp but not anymore. I’ve heard they grind their own now but idk.
I took my my car out again last night and the metallic tapping noise on the drivers side is even worse now, it sounds terrible. Everything under the valve covers is tight and looks fine. I’m so aggravated with this car!
I took my my car out again last night and the metallic tapping noise on the drivers side is even worse now, it sounds terrible. Everything under the valve covers is tight and looks fine. I’m so aggravated with this car!
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,174
Likes: 259
From: Virginia