TRANS SWAP

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Jeffb1961

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Jun 6, 2024
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Location
Lake Isabella
First Name
Jeff
Truck Year
1986
Truck Model
c30
Engine Size
454
I HAVE A 1986 CHEVY C30 DUELLY. I WOULD LIKE TO CHANGE THE 4 SPEED MANUAL TO A AUTOMATIC. IS AND CHANGES THAT HAS TO BE DONE TO THE TRUCK. AND SHOULD I GET A NEW STEERING COLUME WITH THE AUTO SHIFT HANDLE ON IT.
 

Strick

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Location
Dunn, NC
First Name
Harold
Truck Year
1979
Truck Model
C20 Crew
Engine Size
350
I would change the column to an auto when doing the swap. Are you putting a TH400 in? Also, IF your truck has a tilt column with the manual it will be worth a little something.

HS
 
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Jeffb1961

Junior Member
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Jun 6, 2024
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Location
Lake Isabella
First Name
Jeff
Truck Year
1986
Truck Model
c30
Engine Size
454
I'M NOT SURE ON WHICH TRANS TO PUT IN. ALSO IF I CHANGE TO A AUTO WILL I HAVE TO MAKE ANY CHANGES TO MY FLOOR BOARD?
 

NickTransmissions

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Aug 3, 2023
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Location
Las Vegas
First Name
Nick
Truck Year
1987
Truck Model
R10
Engine Size
350
I'M NOT SURE ON WHICH TRANS TO PUT IN. ALSO IF I CHANGE TO A AUTO WILL I HAVE TO MAKE ANY CHANGES TO MY FLOOR BOARD?
Id do a 4L80E with a stand alone controller. Best auto trans GM has ever fielded, IMO. You should have room in the trans tunnel but you can always take some measurements, post them and i can give 4L80e measurements to confirm/deny fitment.

Also, why all caps (yelling)?
 

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