Car pushes left on hard acceleration - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

PostNup · 01-16-2020, 03:48 PM

Hey all,

Car pushes left under hard acceleration if left unchecked... like middle lane to left lane if left unchecked going from 60-90.

Car has:
Pegasus Solid Cradle Bushings
Z-28 Rear Upper Outer Control Arm Bushings
BMR TR003 Adjustable Toe Rods
BMR Extreme Anti-Roll Bar
Carlyle LCA and TAs (from their 15" Conversion Kit)
Justice Pete's Aggressive Street alignment
Tire pressures equal side to side

Thanks

Black_SS10 · 01-16-2020, 04:01 PM

When did it start?

PostNup · 01-16-2020, 04:12 PM

After the Cam install

Coleroad · 01-17-2020, 10:01 AM

Do you have aftermarket front wheels? With say a big change in tire width, or offset? If so, read about scrub radius. What it can cause during acceleration and deceleration when you change it. If not, the first place i would look is at the front radius arms.

PostNup · 01-17-2020, 10:53 AM

THX. Stock front wheels and same tires. It does not do it on deceleration, that I have noticed.

I will put checking the radius arms on my list.

Black_SS10 · 01-17-2020, 06:47 PM

Quote:

Originally Posted by PostNup

After the Cam install

So no problems before the cam install? Just a cam install?
Did you put in the cam?

rdanzel · 01-30-2020, 02:53 AM

That's pretty strange. Any update on this?

olblue75 · 01-30-2020, 08:29 PM

Axle shaft possibly?

'10CamaroDude · 01-30-2020, 10:24 PM

Under hard acceleration, the thrust angle is changing, causing the rear wheel(s)
to steer the car. That is usually a radius arm; bad bushing(s). Could be LCAs, but
yours are new? IF they are adjustable, are both sides equal? If the cradle shifts
under hard acceleration, that also changes the thrust angle. Take the car in for an
alignment, they can correct the thrust angle if they know how. I think it happening
after the CAM install was a coincidence, or the torque shift exposed it.

ZL1C7 · 01-31-2020, 01:48 AM

Also make sure the rear springs are seated in the pockets. Had one slip to the side after jacking the car up and do the exact same thing.

01-16-2020, 03:48 PM	#1
PostNup CAR-DASHIAN Drives: 2015 Ashen Gray Metallic 2SS/RS L99 Join Date: Nov 2015 Location: Gilbert, AZ Posts: 540	Car pushes left on hard acceleration Hey all, Car pushes left under hard acceleration if left unchecked... like middle lane to left lane if left unchecked going from 60-90. Car has: Pegasus Solid Cradle Bushings Z-28 Rear Upper Outer Control Arm Bushings BMR TR003 Adjustable Toe Rods BMR Extreme Anti-Roll Bar Carlyle LCA and TAs (from their 15" Conversion Kit) Justice Pete's Aggressive Street alignment Tire pressures equal side to side Thanks __________________ PERFORMANCE: ColdAirInductions CAI, ADM Race Scoop, Cordes Performance Racing Ported TB/IM/Custom VVT Cam, WFO Milled Heads, Stainless Power 1 7/8" LT/3" HFCs, JBA 3" Comp. Cat-Back, Taylor 10.4mm Plug Wires, Tim King Performance Stage 3 6L80, Circle D Billet 3600 Stall, Nic D ECM/TCM Tune, - 458rwhp/413rwtq (prior to PIM), Forgestar F14 (F)18" / (R)17" Rims. SUSPENSION: Z/28 Rear UCA Bushings, Carlyle Racing LCA/TA, BMR Adj. Toe Rods/Xtreme Anti-Roll Bar, Justice Pete Castor Locks/Radius Rod Inserts, Pegasus Billet Rear Cradle Bushings, Mickey Thompson Street SS II 305/45/17 tires.

01-16-2020, 04:01 PM	#2
Black_SS10 SomeguyK Drives: 2010 Black 2SS/RS Join Date: Nov 2014 Location: FL Posts: 1,947	When did it start? __________________ TMS 427, Dart iron Block, Forged assembly, Frankenstien heads, AGP TT 62/62 BB turbo's, AGP/Fore triple fuel system, Tilton clutch, Holley 1 7/8 shorties, Technostalgia tail lights,Oracle, Aeroforce, MGW shifter,Flowmaster, Pegasus subframe bushings,BMR trailing & toe arms,Z28 UCA bushings,Zl1 rear sway bar,Prothane,BMR,Goodridge brake lines,Ridetech HQ coilovers,3.91,Trutrac,billet caps,DSS axles,HE offest,built TR6060,1LE diffuser,Havoc spoiler,SSclones,20in MRR 017, Pirelli P Zero, Nitto NT555RII More to come.

01-16-2020, 04:12 PM	#3
PostNup CAR-DASHIAN Drives: 2015 Ashen Gray Metallic 2SS/RS L99 Join Date: Nov 2015 Location: Gilbert, AZ Posts: 540	After the Cam install __________________ PERFORMANCE: ColdAirInductions CAI, ADM Race Scoop, Cordes Performance Racing Ported TB/IM/Custom VVT Cam, WFO Milled Heads, Stainless Power 1 7/8" LT/3" HFCs, JBA 3" Comp. Cat-Back, Taylor 10.4mm Plug Wires, Tim King Performance Stage 3 6L80, Circle D Billet 3600 Stall, Nic D ECM/TCM Tune, - 458rwhp/413rwtq (prior to PIM), Forgestar F14 (F)18" / (R)17" Rims. SUSPENSION: Z/28 Rear UCA Bushings, Carlyle Racing LCA/TA, BMR Adj. Toe Rods/Xtreme Anti-Roll Bar, Justice Pete Castor Locks/Radius Rod Inserts, Pegasus Billet Rear Cradle Bushings, Mickey Thompson Street SS II 305/45/17 tires.

01-17-2020, 10:53 AM	#5
PostNup CAR-DASHIAN Drives: 2015 Ashen Gray Metallic 2SS/RS L99 Join Date: Nov 2015 Location: Gilbert, AZ Posts: 540	THX. Stock front wheels and same tires. It does not do it on deceleration, that I have noticed. I will put checking the radius arms on my list. __________________ PERFORMANCE: ColdAirInductions CAI, ADM Race Scoop, Cordes Performance Racing Ported TB/IM/Custom VVT Cam, WFO Milled Heads, Stainless Power 1 7/8" LT/3" HFCs, JBA 3" Comp. Cat-Back, Taylor 10.4mm Plug Wires, Tim King Performance Stage 3 6L80, Circle D Billet 3600 Stall, Nic D ECM/TCM Tune, - 458rwhp/413rwtq (prior to PIM), Forgestar F14 (F)18" / (R)17" Rims. SUSPENSION: Z/28 Rear UCA Bushings, Carlyle Racing LCA/TA, BMR Adj. Toe Rods/Xtreme Anti-Roll Bar, Justice Pete Castor Locks/Radius Rod Inserts, Pegasus Billet Rear Cradle Bushings, Mickey Thompson Street SS II 305/45/17 tires.

01-30-2020, 08:29 PM	#8
olblue75 Drives: 2010 2SS/RS Join Date: Dec 2009 Location: Clarksville Tennesse. Posts: 6,062	Axle shaft possibly? __________________ Orange Krush II 1LE Front sway bar, Splitter, shocks and struts, Z28 dual mode mufflers, Intake, UCA Bushings, and Toresen 3.91 Diff. 1 piece DSS Drive Shaft, ZL1/C7 Calipers, and 32mm JPSS Rear Bar. ASC race spec splitter and wicker. 6th Gen M017 Wheels. Stainless Works 1 7/8 LTs. DSE and PAFDT Suspension components.

01-17-2020, 10:01 AM	#4
Coleroad Drives: 13 Camaro Join Date: Oct 2016 Location: Colorado Posts: 315	Do you have aftermarket front wheels? With say a big change in tire width, or offset? If so, read about scrub radius. What it can cause during acceleration and deceleration when you change it. If not, the first place i would look is at the front radius arms.

01-30-2020, 02:53 AM	#7
rdanzel Drives: 2010 Join Date: Mar 2015 Location: Ga Posts: 249	That's pretty strange. Any update on this?

01-30-2020, 10:24 PM	#9
'10CamaroDude Account Suspended Drives: 2010 Camaro LS Join Date: Nov 2019 Location: Pgh Posts: 739 View My Garage	Under hard acceleration, the thrust angle is changing, causing the rear wheel(s) to steer the car. That is usually a radius arm; bad bushing(s). Could be LCAs, but yours are new? IF they are adjustable, are both sides equal? If the cradle shifts under hard acceleration, that also changes the thrust angle. Take the car in for an alignment, they can correct the thrust angle if they know how. I think it happening after the CAM install was a coincidence, or the torque shift exposed it.

01-31-2020, 01:48 AM	#10
ZL1C7 Drives: 2023 SS 1LE 10SPD/2015 SS 427 Man Join Date: Aug 2015 Location: Sacramento Area Posts: 803	Also make sure the rear springs are seated in the pockets. Had one slip to the side after jacking the car up and do the exact same thing. __________________