I am installing a Howards roller cam on my 1970 340 . Howards tech support is not very helpful at all. Question , the roller lifters what direction does the V bar face ? Towards the block or cam. It appears that they need to be installed facing the block but the rivet hits the block so you cant get the proper angle to insert in lifter bores . The lifters have a tapper on them for push rod clearance that would work with the lifters installed facing the block. The lifters will go in with V bar facing the cam but that does not leave any push rod clearance. So I need so help on what it takes to install so roller lifters will work with no clearance issues. Thanks Tim