I had my converter changed from a 2800 to a 3600 stall today and Bob at SVS said my flex plate looked fine. He said he saw a cracked one on a stroker run 1.5x 60' times but that was it.
First all motor LX in the 9's
2006 Black R/T- Inertia 5.7 Based 370 with Eagle Big Valve Heads & Custom Blower Cam, Kenne Bell 2.8LC Supercharger with 148mm T/B & CTP'S KB Stand Alone Drive, Heat Exchanger & Oil Fill/Seperator, Dynatech Long Tubes & Catless Mids, Dynomax 3" Catback, Paramount Transmission, Dominator T/C, 3.06 Getrag with DSS 1400HP axels & Drive shaft, Willwood Brake Upgrade Kit and AFCO Coilovers. Best ET 10.49 @ 129.72
2012 Black RAM 1500 Sport 4 X 4 DS InTune, BT Catch Can
Add me to the list of broken flex plates. Mine did not actually break like some. When I pulled my motor for the current build it had some serious cracks. It was just a mater of time before it would have been broken through.
sorry to drag out an old thread just thought i'd post a pic to show what the damage looks like (this is not my car)
the car to which this happened has only boltons and is a 5.7
i was suprised to read that this appears to be a common issue! i posted a while ago that i get a strange noise at high rpms, although not a symptom of broken flex plate could it be a contributing factor?!
can you guys educate me on what would happen if this peice would break?
2007 Charger R/T R&T, Mods - AFE stage 2 CAI, Kooks LT's and Hi-flows, Corsa Cat-back, MM ported throttle body, Diablo 91 canned tune (+3.5% fuel), R1 rotors, Centric Posi-quiet Ceramic Pads, SRT rear diffuser, Avic F700BT, CBD CF SRT-8 Hood, 5000K Dabears HID's (lows/fogs), almost everything BT offers for the Charger (lol)
best 0-60 (so far) 5.30
My goodness!! That's terrible for a close to stock 5.7. Makes me glad I've got a BB flexplate!!
Personal Best: coming soon!!
I'm a stock flexplate tester right now:-). Probably should have spent the extra $200 for peace of mind. With open headers I have no clue if it is broken or not.
'99 FRC Corvette - Far From Stock
'06 Silver R/T R&T Fully Loaded [SOLD]
->FRI'd with Street/Strip Heads + Scud Camshaft<- CTP Spacers + 09 Eagle Manifold
-FRI Custom Stepped LT Headers--Getrag 3.06 LSD--DIABLOsport Predator--Powerbond 25% Underdrive Pulley--ProTorque 2800
-FRI PolyMounts--GSM Cold Air Intake--180Tstat--RTJunkieNOESP--MoparTCM--PEDDERS Touring Kit--Billet Tech Throttle Body
Best ET: 12.490 sec @ 113.58 mph +400 DA, 4000 RaceWeight
I pretty much planned on getting a new flexplate with the TC but I didnt think it was this common to crack or break these stock ones.......definently getting one for piece of mind especially since I am going to be putting more stress on the drivetrain.
first time out 11.28 @ 123.94MPH 1.89 60ft +3500DA R.I.P Kenne Bell
heres the video for reference:
at 15 secs and 20 secs the noise is audible
Sounds like a washing machine on spin cycle!!
When I finally do my converter I think a BB flex plate is in order.
Last edited by NYCSRTATE; 12-07-2009 at 11:26 PM.
To My Beloved Father, Love You Dad
I put the BB flex plate in and all i can say is for $200 bucks it will save you thousands in damages if your @ 6k rpm and that thing flys off.
Don't screw around with safety for $200.
I have been through tranny related explosions (BJB Jeep + GM Tranny) pretty friggen scary.
More & more Chrysler dealers are buying these from me instead of the stock Chrysler flexplate when a guy comes in with a cracked one.
When your engine or tranny is out....replace the damn flexplate!