hi, I see the lowly carter AVS and T.Q. are kinda bashed about. in world of stk and S/S , you use the original carb!!! right now, there are 340's 1970 with AVS going 10.7 secs, also 72 and 73 340's going 10.70 with T.Q.carbs.
these are stockers!!! also matt steen's 235 /273 SS/K car with small AFB, runs mid 10 sec and 120 MPH!! like was stated , you have to know about fuel curvres in a carb. on a T.Q. only thing done to tune is to lowere or raise the metering bar for prim and open or close the air door , sec side. very easy to do. holley is not the all mighty!!!!