Trans swap
January 5th, 2020, 4:52 PM
#1
CF Beginner
Thread Starter
Join Date: Jan 2020
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Trans swap
I own a 1990 chevy c2500 with a 3 speed transmission. I want to put a 4 speed into it. What trans will fit with the least modifications needed. Not looking to spend a lot of do major work just want better highway travel.
January 5th, 2020, 11:26 PM
#2
700r4 is the only 4 speed auto that doesn't require a computer. It's alot weaker trans than your th400. Unless you want to go manual, the other options are going to be expensive and difficult.
January 6th, 2020, 5:43 AM
#3
CF Beginner
Thread Starter
Join Date: Jan 2020
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
I was afraid of that
[QUOTE=burnhedge;440769]700r4 is the only 4 speed auto that doesn't require a computer. It's alot weaker trans than your th400. Unless you want to go manual, the other options are going to be expensive and difficult.[/QUOT
Thanks for your reply. I was hoping that was not the case. I haul quite a load for my little truck. Generator welder and tools never leave the rig. I have swapped a 700r4 in an s10 a time or two and that was much less of a truck. I can turn a wrench but I don't really have the knowledge or experience to do a swap to manual.
Thanks for your reply. I was hoping that was not the case. I haul quite a load for my little truck. Generator welder and tools never leave the rig. I have swapped a 700r4 in an s10 a time or two and that was much less of a truck. I can turn a wrench but I don't really have the knowledge or experience to do a swap to manual.
January 6th, 2020, 6:58 AM
#4
Most 1500s had 700r4s so it's not all that weak, but if you tow heavy your rolling the dice.
I've heard the 4l80e behind the early mechanical diesels have a stand alone computer if you happen across a parts truck with that setup. Aftermarket controllers are available but with a big price tag.
Manual swaps are really easy on these trucks if you have a parts truck to get everything from. Plus you can have a 4 or 5 speed.
I've heard the 4l80e behind the early mechanical diesels have a stand alone computer if you happen across a parts truck with that setup. Aftermarket controllers are available but with a big price tag.
Manual swaps are really easy on these trucks if you have a parts truck to get everything from. Plus you can have a 4 or 5 speed.
January 7th, 2020, 9:58 AM
#5
I'm here for the party
the 700r4 is a weak trans if abused.
the 4l80e out of a 92 and 93 with the 6.5 used a standalone and 1991 was still the 6.2.
my 91 v3500 came with the 4l80e and 5.7 tbi. i swapped out the 5.7 for a cummins now i have a "black box" for the trans. pretty much makes the automatic trans a manual and lefts you shift with the shifter. isnt too bad but can be a pain and i wont let anyone else drive it except for one friend that i know can remember to shift the "automatic" trans.
like burn said i would think about a nv4500 swap before adding an auto unless you have the auto trans laying around.......but then the price of the parts/trans will out weight the gas millage you'll save no matter which way you go unless you need to replace a burnt trans anyway
the 4l80e out of a 92 and 93 with the 6.5 used a standalone and 1991 was still the 6.2.
my 91 v3500 came with the 4l80e and 5.7 tbi. i swapped out the 5.7 for a cummins now i have a "black box" for the trans. pretty much makes the automatic trans a manual and lefts you shift with the shifter. isnt too bad but can be a pain and i wont let anyone else drive it except for one friend that i know can remember to shift the "automatic" trans.
like burn said i would think about a nv4500 swap before adding an auto unless you have the auto trans laying around.......but then the price of the parts/trans will out weight the gas millage you'll save no matter which way you go unless you need to replace a burnt trans anyway
Thread
Thread Starter
Forum
Replies
Last Post
Falconvan
Silverado, Sierra & Fullsize Pick-ups
0
September 6th, 2013 7:30 PM
camarocrazy76
Silverado, Sierra & Fullsize Pick-ups
0
January 5th, 2011 8:30 AM