I have been prepping a used 235 engine with hydraulic lifters(From a 1951 passenger car with powerglide)for a test run on a homemade engine stand. I have adjusted the points , static timed the motor, adjusted the valves a few times and it sounds close to starting but wont` quite fire. I have spark and gas at carb ,having flooded it while trying the start up. I don`t know much about the motors history but the PO said it ran had been rebuilt (.??) My hope is to get this motor running and install in my 53 chevy pick up with 4 speed . This will allow me to rebuild the tired motor that came out of the truck ( a 1961 235 ).
After adjusting #1,#3, #5 exhaust and #1,# 2, #4 intake at #1 TDC position then rotating the crank 360 degrees to #6 TDC ,I adjusted the exhaust valves on 2,4,6 and intakes on 3,5,6 . After crank and no start I now see that pushrods for #2 exhaust, #3 intake, #4 exhaust are floating free of the rocker arms with about 1/4 inch slack .The flywheel timing mark is at TDC for cylinder 3/4 . I also noted that these three rocker arm adjustments show much greater thread above the locking nut. Is it normal to have the pushrods totally floating free of the rocker arms at different revolutions of the engine or are my adjustments off? I have tried each adjusting scenario three times. First just setting the valves by adjusting all slack out of the adjustment screw/pushrod .Next I adjusted so slack disappears and giving it 1/4 turn tension and lastly adding 1/2 turn adjustment. In addition I have used the intake, exhaust manifolds, carb, distributor and starter from my 1961 engine. The carburetor (rochester B) was operating ok in the truck prior to removal although the heat riser had been stuck and the choke was always necessary to get it started.
Since retirement and Covid I have lots of shop time available to solve this issue although I need some advice on what to try next.
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