LT1/4L60E in a 68 c10.. HELP! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70cst10 · 06-10-2003, 10:35 PM

I'm almost ready to drive the truck now. I've come up on another problem, though. My laptop doesn't have a serial port, so I can't reprogram the computer right away. How will the motor and tranny operate if it's not set up for a 3.73 rear end? Will it screw with the shift points? Will it cause any damage? I'd rather not have to send the computer off to have it reprogrammed. Is that my only choice now?

my new 72 · 06-10-2003, 10:48 PM

Just move the desktop outside for a few and reprogram it using the desktop.

jcalisi · 06-11-2003, 02:32 PM

For a few $$ you can pickup a usb to serial converter to program the brain...

jays68yak · 06-11-2003, 03:04 PM

yeah what he said

Church · 06-11-2003, 09:18 PM

It wont hurt anything. We did it on our Jeep. It would shift into overdrive at 35 MPH! We had to get the computer reprogrammed for 39" boggers and 5.89 gears. Once it was programmed correctly it would fly.

06-10-2003, 10:35 PM	#1
70cst10 Senior Member Join Date: Jun 2001 Location: Gaston, SC Posts: 580	LT1/4L60E in a 68 c10.. HELP! I'm almost ready to drive the truck now. I've come up on another problem, though. My laptop doesn't have a serial port, so I can't reprogram the computer right away. How will the motor and tranny operate if it's not set up for a 3.73 rear end? Will it screw with the shift points? Will it cause any damage? I'd rather not have to send the computer off to have it reprogrammed. Is that my only choice now? __________________ Milan 1964 Chevelle SS 283/M20

06-10-2003, 10:48 PM	#2
my new 72 faster, faster, faster Join Date: Dec 2001 Location: Houston ,Texas ,USA Posts: 1,354	Just move the desktop outside for a few and reprogram it using the desktop. __________________ I'm going to Law School, wanna debate? It's good practice.

06-11-2003, 02:32 PM	#3
jcalisi Registered User Join Date: Feb 2001 Location: Nashville, TN Posts: 126	For a few $$ you can pickup a usb to serial converter to program the brain... __________________ Jon 1968 C10 Custom

06-11-2003, 03:04 PM	#4
jays68yak Registered User Join Date: Oct 2002 Location: Gilroy, CA Posts: 1,454	yeah what he said __________________ 1969 Chevy Project SWB Fleet, 20s, 5.3, t56, in the weeds. 1970 Chevy Truck cab on a 1979 Jimmy frame-8.1 liter 496 bbc/sm465/np203-jeds doubler-np205/d60/14bff Welded/42 tsls on recentered H1s 1998 Chevy Crew Cab K3500 SAS'd with hpd60, links and swayaway coilovers. 8.1l vortec DD/towrig "I like long walks, especially when they are taken by people who annoy me. "

06-11-2003, 09:18 PM	#5
Church Carolina Classic Trucks Join Date: Jan 2000 Location: The South Posts: 792	It wont hurt anything. We did it on our Jeep. It would shift into overdrive at 35 MPH! We had to get the computer reprogrammed for 39" boggers and 5.89 gears. Once it was programmed correctly it would fly. __________________



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.