According to the Nova Resource website stats...Between the L34 and L78 engines there were 5567 BB Novas produced in 1970...there were 1236 [total] Novas equipped with the M40 TH400 transmission...**keep in mind that some of the Yenko Deuces also came with a TH400.
So approx. 22% of the Novas produced had the TH400...
From info I have from Nova owners, some of the early L78 cars used a carb. mounted kickdown switch [it was a different design than the 68-69 version] there was probably a transition to the gas pedal switch sometime in the late fall of 69...our January 70 TH400 L78 has the pedal mounted switch.**you will note in the photo the gas pedal has the mechanical linkage...this switched to a cable at the end of 69 or very early in 70...as Nova folks know, there were many minor changes mid-year 1970.
wilma
