dville_gt

iTrader: (5)

I have a TH350 converter for SBC, ran it on my LT1 for a few months before I sold it and it bolted up just fine.

Now I am trying to run it behind my 2005 LQ9 with the GM adapter and the longer flexplate bolts. No dice.

If I put the adapter on the the crank and the flexplate on top the converter snout has about 1mm between it and the adapter.

If I put the adapter on top of the flexplate the snout of the converter bottoms out yet the mounting surface of the converter is no flush with the flexplate, probably over about 3/16th's of an inch gap.

From the thread about TH350 swaps it doesn't mention any of the flexplates not being able to use the adapter so I am lost.

Here are pictures of my flexplate (off my LQ9) and my adapter (from GM).

slow67

iTrader: (2)

You might have one of those rare 6.0s with the longer crank (so it works without a spacer)

dville_gt

iTrader: (5)

This is a 2005 motor though, I believe that the long snout cranks were all very early engines.