trunions,pushrods,and header bolts - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

oldman14ss · 01-20-2021, 07:31 PM

like it says gonna do a little add on in a few days. finally got a flat screen and cable so I have a few channels. now I gotta learn to stream. anyway do you guys know who makes the trunion bushing kit for summit? got some howards swedged push rods, and stage 8 header bolts. my question is: with these upgrades can I raise my redline up to like 6900? or 7k with no problems or will lifters hold me back? my redline is 6600 now if they are like the 4th gen Camaro I had GM had a 300 rpm buffer zone in them. so if my tach said 6900 it was really at 6600. is that true with our 5th gens also

InFiD3ViL · 01-20-2021, 08:36 PM

Curious how the header bolts factor into raising your redline...

Anyhow, do you have an L99 or LS3? I can't remember. I don't see the point really if you aren't moderately/heavily modded, ie. cam, trunnions, and full bolt ons - since the stock cam will have peaked long before that (especially the L99 cam). If you are running an L99 I wouldn't risk it, especially if you still have AFM lifters, weak OEM springs, and the heavier valves. Risk vs. reward brother. Even with the LS3, you are still running up against a wall on the stock cam and valvetrain past 6500-6600. Just punishing the top end for no gain. This is just my opinion though.

Sorry Oldman, I don't remember how much you modded the car, so take my comment for what it's worth. Ryan at GPI set my fuel cutoff at 7200 rpm and my shift points at around 6700 WOT and you can see my mods in my sig below. I haven't gone anywhere near my new redline yet and likely won't until I upgrade the lifters. I am running LS7 lifters fyi.

As for the Summit trunnion kit, I am not sure. But I know Comp does a LOT of the rebrands for these companies.

TheFlyingBananaSS · 01-21-2021, 06:27 AM

CHE trunion kit is probably the best out there.

TheFlyingBananaSS · 01-21-2021, 07:30 AM

Like mentioned, valves and lifters are the weak spot of the L99.

frankwjr · 01-21-2021, 09:28 AM

check these out bro...https://www.ebay.com/itm/Chevy-GM-LS...AAAOSwHZhbLEQo

good luck!

PEACE

Chris49066SS · 01-21-2021, 10:12 AM

These guys hit it on the head. It depends on your existing mods. Raising the redline is beneficial if your setup is properly dialed in and is built for it, but theres a lot of factors that work against you after 6600 rpms if you aren't set up for it. Springs, valves, intake manifold to name a few

Chris49066SS · 01-21-2021, 11:22 AM

Also the converter. So my peak power is at 7700 rpm but even with a Circle D converter with a flash stall of 4800 the rpms drop to the 6s on the shifts and it it just wouldn't be optimal to have a higher redline than 7600 because of that drop with the shifts

oldman14ss · 01-24-2021, 07:32 PM

understood, the header bolts are preventative maint. as with the other adds. I cannot understand why though that the needle bearings were made with a flat side, so they can splatter all thru the engine after an over rev. I have an ls3 with a stick. stock cam. thanks for all the help everyone

InFiD3ViL · 01-24-2021, 10:15 PM

Quote:

Originally Posted by oldman14ss

understood, the header bolts are preventative maint. as with the other adds. I cannot understand why though that the needle bearings were made with a flat side, so they can splatter all thru the engine after an over rev. I have an ls3 with a stick. stock cam. thanks for all the help everyone

Yeah, GM definitely failed on that one. Such an amazing engine design that has been destroyed many a time by an engineering oversight.

01-20-2021, 07:31 PM	#1
oldman14ss Drives: 2014 1ss camaro Join Date: Jul 2017 Location: missouri Posts: 705	trunions,pushrods,and header bolts like it says gonna do a little add on in a few days. finally got a flat screen and cable so I have a few channels. now I gotta learn to stream. anyway do you guys know who makes the trunion bushing kit for summit? got some howards swedged push rods, and stage 8 header bolts. my question is: with these upgrades can I raise my redline up to like 6900? or 7k with no problems or will lifters hold me back? my redline is 6600 now if they are like the 4th gen Camaro I had GM had a 300 rpm buffer zone in them. so if my tach said 6900 it was really at 6600. is that true with our 5th gens also

01-20-2021, 08:36 PM	#2
InFiD3ViL Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016 Location: Spring Hill, FL Posts: 4,570	Curious how the header bolts factor into raising your redline... Anyhow, do you have an L99 or LS3? I can't remember. I don't see the point really if you aren't moderately/heavily modded, ie. cam, trunnions, and full bolt ons - since the stock cam will have peaked long before that (especially the L99 cam). If you are running an L99 I wouldn't risk it, especially if you still have AFM lifters, weak OEM springs, and the heavier valves. Risk vs. reward brother. Even with the LS3, you are still running up against a wall on the stock cam and valvetrain past 6500-6600. Just punishing the top end for no gain. This is just my opinion though. Sorry Oldman, I don't remember how much you modded the car, so take my comment for what it's worth. Ryan at GPI set my fuel cutoff at 7200 rpm and my shift points at around 6700 WOT and you can see my mods in my sig below. I haven't gone anywhere near my new redline yet and likely won't until I upgrade the lifters. I am running LS7 lifters fyi. As for the Summit trunnion kit, I am not sure. But I know Comp does a LOT of the rebrands for these companies. __________________ 2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI Last edited by InFiD3ViL; 01-20-2021 at 08:49 PM.

01-21-2021, 06:27 AM	#3
TheFlyingBananaSS Evil Genius of Chevrolet Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017 Location: New York Posts: 3,260	CHE trunion kit is probably the best out there. __________________ GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.

01-21-2021, 07:30 AM	#4
TheFlyingBananaSS Evil Genius of Chevrolet Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017 Location: New York Posts: 3,260	Like mentioned, valves and lifters are the weak spot of the L99. __________________ GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.

01-21-2021, 09:28 AM	#5
frankwjr Drives: 2010 SS 2SS M6 Join Date: Aug 2016 Location: Smithsburg, Md. Posts: 2,446	check these out bro...https://www.ebay.com/itm/Chevy-GM-LS...AAAOSwHZhbLEQo good luck! PEACE __________________ 2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - *150K!* - All work by me...

01-21-2021, 10:12 AM	#6
Chris49066SS Drives: 2010 SS L99 Join Date: Sep 2018 Location: Missouri Posts: 1,635	These guys hit it on the head. It depends on your existing mods. Raising the redline is beneficial if your setup is properly dialed in and is built for it, but theres a lot of factors that work against you after 6600 rpms if you aren't set up for it. Springs, valves, intake manifold to name a few __________________ Previous PB:11.079 @ 122.99mph.. New setup time: TBD The 11.079 pass: https://youtu.be/pz27Zq54t_E Build thread - www.camaro5.com/forums/showthread.php?t=555371

01-21-2021, 11:22 AM	#7
Chris49066SS Drives: 2010 SS L99 Join Date: Sep 2018 Location: Missouri Posts: 1,635	Also the converter. So my peak power is at 7700 rpm but even with a Circle D converter with a flash stall of 4800 the rpms drop to the 6s on the shifts and it it just wouldn't be optimal to have a higher redline than 7600 because of that drop with the shifts __________________ Previous PB:11.079 @ 122.99mph.. New setup time: TBD The 11.079 pass: https://youtu.be/pz27Zq54t_E Build thread - www.camaro5.com/forums/showthread.php?t=555371 Last edited by Chris49066SS; 01-21-2021 at 01:12 PM.

01-24-2021, 07:32 PM	#8
oldman14ss Drives: 2014 1ss camaro Join Date: Jul 2017 Location: missouri Posts: 705	understood, the header bolts are preventative maint. as with the other adds. I cannot understand why though that the needle bearings were made with a flat side, so they can splatter all thru the engine after an over rev. I have an ls3 with a stick. stock cam. thanks for all the help everyone