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4L80e Swap into 4th gen Fbody. W/Part Numbers and Lots of Pictures!

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Old 07-29-2018, 03:23 PM
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Default 4L80e Swap into 4th gen Fbody. W/Part Numbers and Lots of Pictures!
Finally decided to do an 80e swap. It took me awhile to find all the info needed on here even with research . So here's all the parts needed and lots of pictures! I was able to do this without cutting anything in the tunnel!

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Last edited by Mavn; 07-29-2018 at 03:29 PM.
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Old 07-31-2018, 07:26 PM
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$300 4l80e for a late model? I miss home!
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Old 07-31-2018, 07:44 PM
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Originally Posted by Q
$300 4l80e for a late model? I miss home!
houstons great right? Picked up another one for $300 this week lol
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Old 07-31-2018, 09:50 PM
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I paid 400 for mine but reblt it also. Picked up a core for my son for 100.
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Old 08-01-2018, 02:15 AM
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i thought everyone said you have to bang out the tranny tunnel....so how much clearance do you have ?
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Old 08-01-2018, 05:31 AM
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Banjo fittings save beating tunnel. At least on my car.
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Old 08-01-2018, 12:17 PM
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Originally Posted by sjsingle1
i thought everyone said you have to bang out the tranny tunnel....so how much clearance do you have ?
Check the pictures. No beating needed. Banjo Bolts FTW!
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Old 08-01-2018, 12:34 PM
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For the trans harness plug I definitely had to do some major beating as did everyone I've seen that's done it.
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Old 08-01-2018, 01:42 PM
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Originally Posted by MY_2K_Z
For the trans harness plug I definitely had to do some major beating as did everyone I've seen that's done it.
pics of the harness plug area OP !!!
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Old 08-01-2018, 02:08 PM
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Originally Posted by MY_2K_Z
For the trans harness plug I definitely had to do some major beating as did everyone I've seen that's done it.
No Beating here. Ill take pics tomorrow. Its CLOSE but it clears lol
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Old 08-01-2018, 03:46 PM
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Do the banjo fittings restrict the flow? I know sometimes people run bigger lines to the cooler. Feel like this would make it pointless.
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Old 08-01-2018, 03:53 PM
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Originally Posted by Mods89
Do the banjo fittings restrict the flow? I know sometimes people run bigger lines to the cooler. Feel like this would make it pointless.
Honestly not sure. I have a 40k cooler mounted right infront of the Rad. it gets ALL the air flow lol
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Old 08-01-2018, 03:59 PM
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I have the Bumper cut aswell to get more air to everything


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Old 08-01-2018, 04:52 PM
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My wiring "cleared" but was too close for comfort. I was afraid it would damage the plug so i cut a chunk out.
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Old 08-02-2018, 06:41 AM
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Originally Posted by 01ssreda4
My wiring "cleared" but was too close for comfort. I was afraid it would damage the plug so i cut a chunk out.



your trans mount has your trans wayyy lower than mine
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Old 08-02-2018, 08:10 AM
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Nope, its about as high as it will go. Look closely, that pic has a huge amount cut out by the plug.

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Old 08-02-2018, 10:08 AM
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Nice! I'm doing this, this weekend. Finally got all the parts rounded up. I went with madman's dipstick tho. I didn't want a ridiculous fill time.
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Old 08-02-2018, 11:11 AM
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what are the part numbers on those banjos for the cooler lines?
also can anyone share their 4l80e tune for me to compare.
I have a 408 witha 4l80e using a relay on my 98 fbody
my car doesnt come out of the hole strong enough like I want it to, I am running a circle D 5C converter and have 4.11 gears
last time I went to the track it ran 11.22 @ 121.51mph 1.630 60'
using br7efs gapped at 32 bc I am gearing out to spray some nitrous on her.
thanks
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Old 08-02-2018, 11:30 AM
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Originally Posted by 98hc4mula
what are the part numbers on those banjos for the cooler lines?
also can anyone share their 4l80e tune for me to compare.
I have a 408 witha 4l80e using a relay on my 98 fbody
my car doesnt come out of the hole strong enough like I want it to, I am running a circle D 5C converter and have 4.11 gears
last time I went to the track it ran 11.22 @ 121.51mph 1.630 60'
using br7efs gapped at 32 bc I am gearing out to spray some nitrous on her.
thanks
Ebay, 6an Banjo 4l80e
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Old 08-02-2018, 11:31 AM
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Originally Posted by The Cartel
Nice! I'm doing this, this weekend. Finally got all the parts rounded up. I went with madman's dipstick tho. I didn't want a ridiculous fill time.
pull the dipstick out, fill from the bottom with that side of the car jacked up. Then put dipstick back in and lower the car to see the level. Its pretty easy and fast.
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