Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com - View Single Post - Lost 4-6 gear need advice

hammdo · 07-07-2019, 08:36 PM

GPI rebuild mine. I’m over 800 RWHP and RWTQ.

my trans was holding up but developed a 4-5 flare during upshift. When they took it apart, found some ‘heating’ in the 456 pack. Nothing cracked. Tear down will probably confirm the 456 hub assembly or shaft cracked. Billet upgrades will help (I did those).

I have a deep pan, a BIG trans cooler as heat is a big enemy of the transmission (besides a bad tune), the SUV trans filter for more flow, TCI flex plate , and a 6L90 torque Converter from a ZL1.

Mine was rebuilt for road course work, very happy I did not wait...

-Don

07-07-2019, 08:36 PM	#12
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,695 View My Garage	GPI rebuild mine. I’m over 800 RWHP and RWTQ. my trans was holding up but developed a 4-5 flare during upshift. When they took it apart, found some ‘heating’ in the 456 pack. Nothing cracked. Tear down will probably confirm the 456 hub assembly or shaft cracked. Billet upgrades will help (I did those). I have a deep pan, a BIG trans cooler as heat is a big enemy of the transmission (besides a bad tune), the SUV trans filter for more flow, TCI flex plate , and a 6L90 torque Converter from a ZL1. Mine was rebuilt for road course work, very happy I did not wait... -Don __________________ 747 RWHP 794 RWTQ "Horsepower sells cars, torque wins races." - Enzo Ferrari See My Build: http://www.camaro5.com/forums/showthread.php?t=385577 Last edited by hammdo; 07-07-2019 at 08:48 PM.