To be honest its not really worth trying to build a performance 85-86 motor. Most machine shops won't port that motor for you. So even if you were able to do a long rod set up, you'll never be able to let that power roll out of the motor. If that makes sense? Your so much better off getting a 87+ motor and rebuilding that. They are so much more versatile and buildable. The newer motors can actually hold up to porting and can be made into some real power houses.

But if you are set on building the 85-86 let me know cuz i have a complete motor that ill make you a killer deal on.