D-mailman
Well-Known Member
NHRA immediately refactored the '68 340 to 310 h.p. when it came out and the '70 3x2 six-pac 340 to 325 h.p. The '71 TQ equiped 340 was NHRA factored to 330 h.p. I believe the '71 was the best of the 340 series. It still had the high compression , the big valve heads and the wonderful and under rated TQ, with the well designed spread bore manifold. They were VERY strong performers indeed. And VERY under rated for sure. My '72 Duster 340 auto 727 stock convertor with 98,000 on the entire drivetrain , 340 with a port-o-sonic intake with the stock TQ and an alliance 292/.480 hyd. cam, 1970 340 2.020 heads , small tube 1 5/8 headers and 391 gears on street tires ran consistant 13.60/13.50's at 103 mph with a best of 13.53 @ 104 in 1/4. Absolutely true. Later went much quicker after .030 rebuild and other mods. The 340 is THE best small block EVER..!!
Terry
Terry