BACKWOODSMACK

[BACKWOODSMACK]

CARB TO TBI on a Chevy 383

[dave w]

:welcome:

Which TBI computer are you using?

dave w

[BACKWOODSMACK]

Dave, I have never used a forum before so excuse my naivety about these things. My first post was an attempt to register. To my problem, I've a '84 sbc 383, ext balanced flex plate, performer 2701, crane 260 cam (was a 268 I believe). I want to put this into a '94 C-1500 with a 4L60E and maintain all the computer peripherals and appurtenances, TBI included. For the intake, I have an adapter square bore to TBI. My two major questions, will the flex plate (was backed up with a TH350) work with the 4L60E torque converter and what do I do with the EGR from the C1500. No smog requirements in the state.

[dave w]

I'm not sure about the flexplate question, maybe the 383 has an aftermarket flexplate?

The chip in the 94 C-1500 will need to reprogrammed to delete the EGR and change the displacement to 383.

dave w

[stew86MCSS396]

Imma thinkin bout bolting a 4L60E to some old iron...and came up with this...drop down to last paragraph and note external weights+aftermarket flexplate. Does that mean it'll clear OEM???
https://www.streetmusclemag.com/tech-stories/the-great-chevy-auto-trans-interchange-guide/

[1project2many]

It does appear the TCI flexplate works with the metric 4L60E fasteners.

[BACKWOODSMACK]

I can't believe the can of worms I got myself into. I guess these kind projects keep me out of the bar. Thanks to Stew for the link. Next step is to remove the C-1500 engine and trans and just see what will bolt up and not. Thanks all.