I bought a new reproduction 153 car type exhaust manifold...I never used it because it had a serious casting flaw about the size of a quarter on a port runner.It looks fine otherwise. If someone here wants it for the price of actual shipping plus 5 bucks just let me know.
The 153 I rebuilt and swapped into my 47 Jeep CJ2A last year runs nice.The only changes from stock is a short tube home built header and distributor advance modification.12 degrees intitial,about 34 total and limiting the vacuum advance to 14degrees gives better throttle response. .030 stock replacement pistons were sitting .030 down into the bore. So I found a GM .023 shim gasket to get a bit of quench.The Felpro composition gasket is about .055 thick The aluminum timing gear is a bit noisy at idle... The Jeep has stock 5.13 gears and the 153 is happy to buzz along at 55 MPH.
