5.3 to 4l60e... Advice needed! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kjdolphins · 12-14-2014, 11:41 PM

Purchased a 2004 5.3 to throw in my 72 c10. Found a 4l60e, but it's out of a 1994 vehicle (so I was told)... Is there anything extra needed to pair these up? The guy we bought the tranny from also gave us an extra flywheel he said we'd need...

scottybaccus · 12-14-2014, 11:59 PM

You will need a converter for the 2004 model, and the flex plate should look like a flower, dished in the center, by 10mm.

akdg87 · 12-15-2014, 04:47 PM

issue is that the 1994 4l60e is non pwm (pulse width modulation) TCC lockup, so you cannot put a PWM converter in (Such as the 2004 mentioned above).

The trans will work, if you tune the lockup settings correctly for on and off and not a percentage of lockup.

Also you need the 4l80e flex plate with spacer, or the cheaper alternative is that Hughes sells a spacer for the torque converter nose and you will have to oblong out the holes on the stock 5.3 flexplate to accept the older convertor bolt pattern.

clinebarger · 12-15-2014, 10:34 PM

The 3-2 downshift Solenoid & Valving is also an issue.

'93-'95 3-2 Solenoid is controlled via PWM & the 3-2 Valve is isolated from the Solenoid.

'96-'08 3-2 Solenoid is controlled via On/Off, The 3-2 Valve is actuated directly.

I would advise against using '93/'94/'95 4L60E's, You may get the TCC control ironed out with a custom tune, But custom 3-2 PWM tables that works right may be tricky.

All that to run a 21 year old 4L60E core of unknown origin? Get a correct 300MM 4L60E for a LS & have it rebuilt.

12-14-2014, 11:41 PM	#1
kjdolphins Registered User Join Date: Mar 2014 Location: Ethan, South Dakota Posts: 93	5.3 to 4l60e... Advice needed! Purchased a 2004 5.3 to throw in my 72 c10. Found a 4l60e, but it's out of a 1994 vehicle (so I was told)... Is there anything extra needed to pair these up? The guy we bought the tranny from also gave us an extra flywheel he said we'd need... __________________ Current project: 1972 Chevy c-10 350 (700r4 hopefully) - "Lola" 68 Oldsmobile Delta Custom 455 78 Z/28 Camaro - "Rocky" 89 Camaro RS 305 TBI DD - "Betsy"

12-14-2014, 11:59 PM	#2
scottybaccus Registered User Join Date: Dec 2014 Location: Hutto Posts: 109	Re: 5.3 to 4l60e... Advice needed! You will need a converter for the 2004 model, and the flex plate should look like a flower, dished in the center, by 10mm. __________________ Scotty Baccus

12-15-2014, 04:47 PM	#3
akdg87 Registered User Join Date: Sep 2013 Location: fairbanks, ak Posts: 339	Re: 5.3 to 4l60e... Advice needed! issue is that the 1994 4l60e is non pwm (pulse width modulation) TCC lockup, so you cannot put a PWM converter in (Such as the 2004 mentioned above). The trans will work, if you tune the lockup settings correctly for on and off and not a percentage of lockup. Also you need the 4l80e flex plate with spacer, or the cheaper alternative is that Hughes sells a spacer for the torque converter nose and you will have to oblong out the holes on the stock 5.3 flexplate to accept the older convertor bolt pattern. __________________ build thread 1955 cameo turbo lsx 1993 K1500 Blazer 5.3/4L80e 2009 CTSV Sedan

12-15-2014, 10:34 PM	#4
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: 5.3 to 4l60e... Advice needed! The 3-2 downshift Solenoid & Valving is also an issue. '93-'95 3-2 Solenoid is controlled via PWM & the 3-2 Valve is isolated from the Solenoid. '96-'08 3-2 Solenoid is controlled via On/Off, The 3-2 Valve is actuated directly. I would advise against using '93/'94/'95 4L60E's, You may get the TCC control ironed out with a custom tune, But custom 3-2 PWM tables that works right may be tricky. All that to run a 21 year old 4L60E core of unknown origin? Get a correct 300MM 4L60E for a LS & have it rebuilt.



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