The 'Quickest' A-Body Small Blocks

autoxcuda said
Did they run B/PS in 1971?

Did a 71 Duster/Demon with 3.91's ever run in that class?

Auto - X - Cuda,

The Pure/Stock Class was only run for several years in the late 1960's.

At the end of 1969, the Pure/Stock Class was dropped from just about every track.

Where the 340 A-Body would have been slotted in Pure/Stock

1967 Pure Stock
B/PS ....... 9.50 to 10.59 Wt/Hp

1968 Pure Stock
E/PS ...... 10.00 to 10.49 Wt/Hp

1969 Pure Stock
F/PS ...... 10.00 to 10.49 Wt/Hp

In 1970 & 1971, the Duster 340 and Demon 340 were classed in 'Stock Class'
G/Stock {10.00 to 10.49 Wt/Hp}