How to Install a 4L80E into 1967 - 72 C10 / C20 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bry593 · 06-30-2022, 02:08 PM

Here's a video with some pointers on how to swap a 4L80E into your C10 or C20 truck.

https://www.youtube.com/watch?v=3yOop3td7Rc

If you have a C20, you probably have a 4.10 or 4.57 geared rear axle. You really can't hang with modern traffic unless you want to wind your engine up to 3000+ rpm. The 4L80E allows you to cruise 75 mph at a comfortable 2300ish rpm, reducing fuel consumption and improving usability. As an added bonus, it's a heavy duty transmission so no problem using your truck as a truck.

06-30-2022, 02:08 PM	#1
bry593 Registered User Join Date: May 2016 Location: Oklahoma Posts: 189	How to Install a 4L80E into 1967 - 72 C10 / C20 Here's a video with some pointers on how to swap a 4L80E into your C10 or C20 truck. https://www.youtube.com/watch?v=3yOop3td7Rc If you have a C20, you probably have a 4.10 or 4.57 geared rear axle. You really can't hang with modern traffic unless you want to wind your engine up to 3000+ rpm. The 4L80E allows you to cruise 75 mph at a comfortable 2300ish rpm, reducing fuel consumption and improving usability. As an added bonus, it's a heavy duty transmission so no problem using your truck as a truck. __________________ 1971 C20 Custom Deluxe, HT383, 4L80E, 3.73 Locker, 4 Wheel Discs



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