Cam, Valve & Springs Installation

[D25_Owner]

Most of the reading I have done on valve train installation has the valves & springs going in first, then cam & lifters second. There must be is a logical reason but I'm not sure what it is.

Seems if you put the valves & springs in first, you would have to hold up every valve to get the cam in. If the cam and lifters are already in, you would only have to rotate the cam every few valves

to get the lobes pointing down then install the valve & springs. Am I missing something? Thanks!

[Plymouthy Adams]

I would refrain from installing the valves and springs...however the lifters must go in..inverting the engine will allow these to be at max insertion and then install the cam...do coat the lifter faces and cam lobes with a break in lube...I have my own preferance use what you are content with..

[Jim Saraceno]

Tim is correct. I can think of no reason to install the valves first.

[martybose]

I can think of a reason not to install the valves and springs first; How would you get the cam lobes past all of those lifters that are spring-loaded in the down position?

I'm with Tim; invert the block, drop in lubed lifters, install lubed cam, THEN turn upright and start installing valves followed by springs, retainers and keepers.

Marty

[Don Coatney]

I can think of a reason not to install the valves and springs first; How would you get the cam lobes past all of those lifters that are spring-loaded in the down position?

I'm with Tim; invert the block, drop in lubed lifters, install lubed cam, THEN turn upright and start installing valves followed by springs, retainers and keepers.

Marty

That is exactly how I did it. I used assembly lube mixed with STP.