Would depend on a number of things...such as application or use of engine, compression ratio (piston size), chamber volume, etc. Talking to a cam grinder is always best. Even if you were to buy a complete kit from them, their still going to tell you to measure everything to be safe. It's best not to guess. For general knowledge you could also look up the GM specs. for perform big blocks and get an ideal of the combinations the factory used
This would be interesting to know for me also. I have 781 heads (November 1977 casting date). Stock everything but I am sure with whatever cam I decide to get that I would lifters springs with it also. I dont understand all this rocker arm ratio and self aligning all that tho stuff tho. Can someone explain that?
Self aligning rocker arms have a shoulder on each edge where they contact the valve stem to keep them aligned. When using pushrod guide plates these are not used.
Rocker Info.> http://www.chevytech.com/3c3.html
sorry computer problems
so the cam im wanting to use has Duration 276/ 286, Lift .500/ .500.
the motor is going into a mud truck and eveything but the intake and carb and headers is stock.
when it comes to the valve train im so so lost lol.
o and also should i worry about valve-piston clearance?
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