Valve adjustment on a '55 Chevy - 6 cyl

[ekonci]

Does anyone have any tips on adjusting the valve clearance on a a '55 Chevy - 235 ci - 6 cylinder engine? The original owner's manual gives "hot" clearances but cold clearances would be handier. Does anyone have these numbers available?
Also, any online links describing the exact procedure would be appreciated.

Thanks, Ed

[Oldcar_Mechanic]

You don't say if you have "solid lifters" (used with standard transmission and overdrive models) or "Hydraulic lifters" (used with Powerglide Transmission).

This is from the 55 Shop Manual for solid lifters:
Before adjusting the valve stem to rocker arm clearance, it is extremely important that the engine be thoroughly warmed up to normalize the expansion of all parts. This is very important because during the warm up period, the valve clearances will change considerably. To adjust the valves during or before this warm up period will produce clearances which will be far from correct after the engine reaches normal operating temperature.

1. Remove rocker arm cover attaching screws, cover and gasket.
2. Normalize engine.
3. Tighten all manifold bolts, valve rocker shaft support bolts and cylinder head bolts.
Note: Cylinder head bolts should be tightened to 90 - 95 ft. lbs. tension in the correct order. Rocker shaft support bolts to 25 - 30 ft. lbs, manifold center clamp bolts to 15 - 20 ft. lbs. and the manifold end clamp bolts to 25 - 30 ft. lbs.4. Lubricate valve stems with engine oil to ensure free movement of valves in their guides.
5. Adjust valve clearances on intake valves to .006" and on exhaust valves to .013".
6. Install rocker arm cover using a new gasket and check for oil leaks.

Hope this helps
Ron

[ekonci]

Ron,
Thanks for the info. My engine does have solid lifters---I forgot to mention that. The torque settings are very helpful. I guess I've got to order a shop manual for my old "Blue Flame"!
Ed

[Oldcar_Mechanic]

That's the best thing for anyone to do when they buy an old car. They are loaded with tons of information that proves to be invaluable. When you look at manuals or talk to people that sell them, be sure to ask them if there are any supplements.

Hope all turns out well with your project. And if you get time, post some pictures.

Ron