[gsoleski]

I have a 1984 700r4 with stock converter that is still in my car. I am putting in a 91 350 in a few weeks. I know I will need a 1 piece RMS type, 153 tooth, external balance? My question is what torque converter bolt pattern do I need? On summit it gives me the option for 10.5, or 10.75in patterns. Any help is appreciated

 

[rick 427]

You need the 10.75" flexplate.