ok thanks guys there isnt a stumble. I have one of those so called EGR 350's. Well did GM ever pull a fast one on them. I had the intake off to clean out the manifold and the heat cross over. In books it says that this has a heat cross over. The heads do not have a heat crossover it is blocked. This is a stock car I have owned it from new and it has an EGR intake but has no EGR heads. I cant figure it out. How does the choke work? Its not electric but it doesnt get any heat except when a rig up a pipe that sucks hot air of the manifolds in the winter. I dont get it! The manifold is a heat crossover manifold with all the ports and such but the heads dont have the ports for the heat crossover. It is a 1973 landua S-coop monte carlo. I guess the S-coop is the 1973 corvette engine in it cause I ran the numbers. Its just so furstrating when you got a book saying no possible way and you got the motor saying im an old school motor. So what is an exceptable amount of shaft wear, I would like to keep the orginal carb because the car will be fully restored starting next year. I guess these cars are getting hard to find with all the demos and enduros I guess Ive got a some what rare one too but I still drive it in the winter. The car when started in the morning will crank for ever with only 1 pump to the floor. If you give it 2 or 3 its not bad. When you give it 4 it starts right away but then it blubers for awhile. When you get off the highway or something and or just let the car idle when it is warm it will sit there and miss and smell gassy like its flooding its self, it just starting getting poor gas mileage around 8 or 7 with a normal history of 15 and 20 on the highway. Will a rebuild fix this?
[This message has been edited by MoeSS396 (edited 09-10-2002).]