I have a 1981 Pickup ("Caddy", 1.7L gas engine) with the old style non-hydraulic lifters. I also have a set of new hydraulic lifters for the
1.7/1.8 which I was going to use on another engine but did not. Will these lifters drop right into the older non-hydraulic heads? I haven't taken a close look or measured anything but they look like they would fit. It's time for a vale adjustment on the old beast, but I'd much rather just replace the lifters and never worry about it again. Aside from maybe replacing the oil pump with a newer high volume version, are there any recommendations? Thanks in advance, -Dave