67 330 2 barrell Olds Cutlass
one bent push rod...Can't seem to get the right length. Please if anyone can point me to the right length. I bought melling mpr-307 8.234 too short! Then I tried melling mpr-309-a 8.346 too
long....what size do I need? Ps I straightened it out and am temporarily using it...but would like to replace with a new one. Thanks for any help

 

You’ll have to make measurements to determine the correct length for YOUR particular setup.

Get an adjustable push rod and use it to set the proper valvetrain geometry.

 

thank you i was trying to avoid buying a 10in. dial indicator lol

 

oct 66 parts book list it as 8 21/64
part number 387479

 

^^^THIS! The shotgun approach ends up costing more money than does just doing it correctly.

 

You do not need a 10 inch caliper to measure for pushrod length. An inexpensive combination square will work just fine. You can make your own length checking adjustable pushrod out of an old one. Cut about a one inch long section out of it, tap threads for a 1/4" X 28 short stud in the two pieces left over. Put one end of the stud in one piece of the pushrod with loctite or epoxy, thread a nut on to the other end of the stud and thread that end in to the remaining piece of pushrod.