Just picked up an LT4 swapped '86 C10

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Bextreme04

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Eric
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350-4bbl
I believe they're 3.08s, which are not ideal but I'm running a th350 so probably the best compromise currently. I may looking into an OD trans in the future (potentially 700r4) with some better gearing in the 3.40-70 range, but TBD on that.
Since you already have the EFI and whatever computer running the LT4, you might as well just drop in a 95-newer 4L60e instead of a junk 700R4. They are basically the same trans, but with a bunch of reliability improvements in the 4L60 and no TV cable since it is all electronically controlled by the computer. It also lets you easily adjust the trans shift points and lockup with an OBD2 tool.
 

F51 LRS

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1986
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C10
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LT4 350
Since you already have the EFI and whatever computer running the LT4, you might as well just drop in a 95-newer 4L60e instead of a junk 700R4. They are basically the same trans, but with a bunch of reliability improvements in the 4L60 and no TV cable since it is all electronically controlled by the computer. It also lets you easily adjust the trans shift points and lockup with an OBD2 tool.
That's a good shout, too. I haven't put a ton of thought into the trans just yet - I'll probably leave well enough alone until I decide to figure out all the wiring for an e trans.
 

Rusty Nail

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Well , this IS the internet....and it requires pictures to operate.
Last I checked

Hold on!
There's no smoking tire/burning rubber/action pix?

Wtf.

I dunno about you, dude. It's fascinating that your next move is to make further and even more unverified claims?
You ain't got no more pictures??
I don't believe it.

Tell em AL!
You must be registered for see images attach

* ;) i like ribbin new guys, thanks for bein a sport. Thanks @Turbo4whl.

Have a good seat pal.. I'll send The Drink Girl over

xc_hide_links_from_guests_guests_error_hide_media

I bet that sucker is a handful... no doubt.
It leaks oil? You gotta fix it.
We'll get ya squared away.
Get it?
Squared away?
:rolleyes:
Oy vey @ Noobs
Squared away??
 
Last edited:

F51 LRS

Junior Member
Joined
Sep 19, 2024
Posts
8
Reaction score
46
Location
SC
First Name
Joe
Truck Year
1986
Truck Model
C10
Engine Size
LT4 350
Well , this IS the internet....and it requires pictures to operate.
Last I checked

Hold on!
There's no smoking tire/burning rubber/action pix?

Wtf.

I dunno about you, dude. It's fascinating that your next move is to make further and even more unverified claims?
You ain't got no more pictures??
I don't believe it.

Tell em AL!
You must be registered for see images attach

* ;) i like ribbin new guys, thanks for bein a sport. Thanks @Turbo4whl.

Have a good seat pal.. I'll send The Drink Girl over

xc_hide_links_from_guests_guests_error_hide_media

I bet that sucker is a handful... no doubt.
It leaks oil? You gotta fix it.
We'll get ya squared away.
Get it?
Squared away?
:rolleyes:
Oy vey @ Noobs
Squared away??
:favorites13: The ribbing I can handle...the bad puns not so sure lol

On another note - got the leaks all squared away....damn it, I just did it too... Redid the timing cover/water pump, oil pan, & trans pan. Tight as a drum now so had a celebratory shop beer & am allowed to park in the house garage now that it doesn't mark it's territory every time I park.

You must be registered for see images attach

You must be registered for see images attach

You must be registered for see images attach
 

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