My 340 was 10.5:1, 260cfm 587 heads, untouched Victor intake, 1-3/4” headers, and a 263/267-108 SFT cam.
8” converter that flashed 4900, 5.13 gears, 30” slicks.
Best ET’s were shifting at 7500. Only went 7k thru the traps.
At 3550lbs (68 B body) the best it went was 11.60’s@116.
Mid-1.60’s in 60’
After the motor was pulled it ended up on the dyno.
Made 400tq/454hp.
After that it got the manifold tweaked and the heads milled to get it to 11:1.
Back on the dyno........ it was like 412tq/478hp........ then got sold.
I’m wondering if the OP’s 60’ times are from the component mismatch, of a traction issue, or both?
