Thanks for the reply.

The straight manifolds must have stopped with the dec 48 engines,
my 4 1949 engines from flint( 2 Jan-feb, the others May-jun) all have the angled exhaust manifold.

The studs on this head are the long threaded studs. Where does the 49 and later pick up the extra 2 horse power? are the valve different, or is the crank ground differently?

Is their a disadvantage to using the metal valve caps? I wouldn't think so.

THanks for the help.



1949 Chevy 4400 Big Red
1949 Chevy 3600 Bob's Truck
1949 Chevy 3100 The Investment
1949 Chevy 3800 the Won Ton