4l60 Trans Cooler Lines

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
Just purchased a new 30-row aluminum transmission cooler for my project and 4L60 trans. I was thinking of running braided lines. The cooler has AN-10 male fittings on it. So Thinking about getting AN 10 female to barb hose fittings for it. Maybe barb fittings to hose for the trans. also. But I am not sure what size and thread the two 4L60 lines are. Coming out the side of the trans. Does anyone know? Or can advise a better way? THANKS

4L60E-Pan-Identification.jpg
https://cdn.shopify.com/s/files/1/2716/4086/files/Trans_Line_Kit_Instructions.pdf
translien.png

reading these links and sub links will help

-6 x 1/4NPS is the correct size for GM turbo 350, Turbo 400, 700R4, 4L60E and many other GM transmissions. These have a straight thread and seal on the gasket.
The case thread size is 1/4 in.-18 NPSM (straight thread)
but there are adapter fittings allowing larger line sizes, that flow with less restriction

http://garage.grumpysperformance.co...fo-and-derale-trans-cool-pans.662/#post-95370
http://garage.grumpysperformance.co...oosing-an-engine-oil-cooler.15375/#post-90261
http://garage.grumpysperformance.co...ns-cooler-install-on-lincoln-navigator.15604/
http://garage.grumpysperformance.co...ubing-fuel-lines-and-flaring.1030/#post-35905
http://garage.grumpysperformance.co...sion-and-oil-cooler-increases-durability.176/
 
Back
Top