89 suburban 454 swap need tranny ideas
January 23rd, 2024, 12:00 AM
#1
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89 suburban 454 swap need tranny ideas
I have a lifted 89 Suburban that I am swapping a built 454 into it and I don’t know what automatic transmission I would want to put in it the engine will make 550 horsepower and it’ll be a mudding rig thank you for any advice you have!
January 23rd, 2024, 4:04 AM
#2
HP doesn't matter. Pick a tranny that's rated to handle your torque
mechanical:
beefed up TH340/400
electronic:
4L80/85
mechanical:
beefed up TH340/400
electronic:
4L80/85
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