Very Important Cam Shaft and Valve Data

Occasionally when purchasing a used 235 high oil pressure engine, it may have been originally in a Chevy car with a Power Glide transmission. This will have a different cam shaft due to the Power Glide engine having hydraulic lifters. The lobes on the cam shaft must be a different height because of the lifters. In fact, hydraulic and solid lifters cannot be interchanged with non-related cam shafts!

To be absolutely sure if your 235 engine was originally from a Power Glide car do the following:

1. Remove the short side plate on the right side of the block.
2. Remove valve cover.
3. Loosen a rocker arm enough so one push rod can be removed.
4. Raise a valve lifter out of its resting place.
5. Place your finger in the valve lifter hole you have just created and feel for a
3/8” diameter hole on either side. Holes allow motor oil to lubricate and fill
the hydraulic valve lifter.

Engines with factory solid lifters will not have these 3/8” holes.

FYI: You can place a set of truck solid lifters with matching cam shaft in a 235 that originally came with hydraulic lifters. However, the reverse will never work! Without the 3/8” holes beside the hydraulics the lifters will not oil.