Ferocity02

iTrader: (59)

I got a Circle D 4L80E multi-disk 258mm converter and asked for it to be made with a 4L60E front. It has three mounting pads on a ~11 1/8" bolt circle.

I also got a TCI flexplate which is supposed to be for an LS motor with a 4L60E trans. This flexplate has six mounting pads at ~10 7/8" bolt circle.

So which one is incorrect?

03sierraslt

iTrader: (22)

My TCI Flexplate had six mount pads just like yours, however 3 were one pattern and the other 3 were a different pattern.

03sierraslt

iTrader: (22)

Will it line up to your stock plate?

Ferocity02

iTrader: (59)

Yup, just checked and there are two bolt patterns. One of them lines up with the converter! Thanks

03sierraslt

iTrader: (22)

Good to hear.

Circle-D

iTrader: (21)

Glad you guys got it figured out..... And the converter has the LS pilot as well. So you will not need the crank extender.

Chris

Ferocity02

iTrader: (59)

Thanks Chris!

So the bolts you provided are about the same length as those that came with the flexplate. They only stick through the flexplate about 3/8", but the holes in the converter look to be about 1" deep. Should I get longer bolts for more grab?

By crank extender do you mean the spacer that everyone talks about when doing 80E swaps using an 80E flexplate/converter? I figure I wouldn't need that. But this flexplate does appear to have an 1/8" thick spacer bolted to the flexplate. Does this stay?

Circle-D

iTrader: (21)

Bolts you have are 20mm in length. With the spacers TCI welds to their flexplate, you can actually use a 24mm bolt. I can send you some, let me know. And the plate they have bolted in needs to be there for proper spacing. The extender I am referring to is the sleeve, it is used if you had a standard GM converter.

Chris

Circle-D

iTrader: (21)

This is the sleeve, do not use it.

Chris

Ferocity02

iTrader: (59)

Sure I'll take some if you have any to spare, thanks! Kinda looks like 30mm might almost work as well, especially if the spacer washers are needed.

There was a note with the flexplate that said to only use that adapter with non-LS1 transmissions. Thank you for the confirmation.

This converter is beautiful. Definitely a work of art!