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clinebarger · 06-24-2009, 08:59 PM

I was only talking about gen III & IV motors ( 4.8 5.3 6.0 6.2 LS1 LS2 etc.) needing a adapter kit (crank to converter hub spacer & a redrilled flexplate)

your vortec 7.4/4L80E came with a 6 bolt converter instead 3 thats the only reason i can think of for you needing a flexplate for the 700R4.

go with the 4L80E. A stock 700R4/4L60/4L60e will NOT hold behind a big block.

If you need help with the wiring let me know.

06-24-2009, 08:59 PM	#9
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: TBI to Vortec Swap question I was only talking about gen III & IV motors ( 4.8 5.3 6.0 6.2 LS1 LS2 etc.) needing a adapter kit (crank to converter hub spacer & a redrilled flexplate) your vortec 7.4/4L80E came with a 6 bolt converter instead 3 thats the only reason i can think of for you needing a flexplate for the 700R4. go with the 4L80E. A stock 700R4/4L60/4L60e will NOT hold behind a big block. If you need help with the wiring let me know.