Thanks for the replies Guys I have found from the the Chevelle web site that I have a BOP TH350 with a large speedo housing that expains why the gear I ordered was too small.
I have a white gear in there and all I need to do now is take it out again and measure it more accurately and count how many teeth I have. Then I need to work out my speedo error and esatblish how many teeth I need.
67 Firebird 350, TH350 auto Convertible, B&M 3000 TC, 4bbl Edelbrock Performer carb and intake Black Jack headers,disc brake conversion. 10 bolt chevy axle with 3.73's and B&M Rachet shifter.
