GM Gen III LS V8 Flexplate Adapter Kit, Includes Flexplate, Torque Converter Adapter Sleeve, Flexplate Bolts, and Torque Converter Bolts, Fits TH350/700R4

This is the second time I've done a LS swap in an older GM vehicle. I've used this flexplate to mate up a LS to a TH350 in a 74 Chevy Impala. Now I'm in the process of LS swapping in a 84 Chevy K30 with a TH400 and ran into problems. The flexplate has holes for 10.75" and 11.063" converter bolt pattern. The converter that was in the TH400 has the larger 11.5" bolt pattern. So I either have to elongate the holes or buy a different flexplate with the correct 11.5" bolt pattern. I've since found out that p/n Z270 flexplate has everything needed as well as the larger 11.5" bolt pattern to work with the larger coverter bolt pattern but cannot confirm. Hope this helps.

I used this to install a 5.3 LS into an 84 blazer. It had a stock th350 in it that works fine. Just pulling a small block chevy out.Now that everything is in place I started to bolt up the torque converter. And guess what. Both bolt patterns on this flexplate are wrong.Now I have to pull the damn engine back out or drop the transmission and drill 3 holes in the flexplate 👿Not happy!!!

Works great for my th700r4 transmission, to bolt up to ls motor

Fit perfect, LM7 to TH400

The ring gear was welded incorrectly and the bolt circle was off center on the flexplate causing about .200 runout ruining my torque converter, I can't recomendThe provided picture shows seams where the ring gear is oversized or out of round

Worked great of swapping a 6.0L LS from a Silverado 2500 into a Humvee. Bolted up to our 6L to a 700R4

Bought this for LS swap and the fly wheel does rub the starter. Not bad but definitely enough to make noise and cause problems.

Do not but this flexplate if you have the extended crank. The description said it fit but it won't...