Have an RV cam, what tdc degrees should be set. i have it now at 10 tdc. it pops thru the exhaust. I have had this exhaust setup since 1998. 73 gmc 3/4 ton 350 sb 4.0 headers edlebrk carb and manifold manual shift on floor (old granny trans). i adjusted the jets to more rich. I don't drive truck, just start it up in the driveway. Still restoring. Thanks in advance
for any help. frankyjoet