Oil in coolant, engine sputtering

[tomcopbar]

Just recently I replaced the stock 2bbl top end of my 318 with a 4bbl eddy intake and 525 vac secondary demon carb and replaced the camshaft. I am having a helluva time getting the car to run right anywhere in the rpm range even after messing with the timing from 0 up to 8 degress advance initial and with the vacuum advance on and off.
Problems
1. The carb with the butterflies set correct off the car will not idle at all with any amount of adjusting on the idle mixture screws, seems to not get enough air but they say to not change the butterfly settings once set off the car.
2. The car seems to backfire through the intake when trying to launch from a stop, I have to really play with the throttle to get it to move and 75% of the time it stalls.
3. The thing was running okay once it was moving despite the trans not shifting to 3rd but now it will sputter when given any amount of gas.
4. there is now oil in the coolant. I never touched the heads but could changing the cam and intake maybe have moved something? Maybe its just coincidence and bad luck that a head gasket went just now, I dont know, but I am thinking head gasket.

Extremely sorry about this massive post but I am in a bind and have lost interest in this car for the moment, I would love to have this car running right by Moparfest.

 

[AdamR]

sounds like a vacuum leak. The oil in the coolant is probably due to a bad intake gasket seal.

 

[1qwikScamp]

what kind of intake gaskets? do not use the metal stamped gaskets with a 4bbl intake will leak every time get the blue felpro gaskets PN# MS90109

 

[MVRCorp]

Best trick I know to check for vacuum leaks is a can of WD-40. With the engine running spray the WD-40 on the gasket between the intake manifold and heads and also between the intake and carb. If there is a leak you WILL hear a RPM difference when you hit the leaky spot.

 

[moper]

How do you knwo there's oil in the coolant? Are you seeing a slight sheen in the radiator? That is more than likely just the leftover stuff from the inside of the manifold passages. You are MUCH more likely to see water in the oil, in which case the oil turns cloudy and milky looking. Have you quadruple checked the firing order? Pay special attention to the "5-7" of 18436572. Was the Deman brand new? Have you checked the float levels? Ignore the part about not messing with the idle speed screw(s). You will have to to tune the car. What cam was installed? Timing should be more advanced than 8° for most setups. Before you start worrying, ALL carbs need some adjustment when installed. And most of the time it's just minor stuff.

 

[1qwikScamp]

Best trick I know to check for vacuum leaks is a can of WD-40. With the engine running spray the WD-40 on the gasket between the intake manifold and heads and also between the intake and carb. If there is a leak you WILL hear a RPM difference when you hit the leaky spot.

or you can use a propane torch just dont light it the engine will idle up once it sucks some propane in i have used both tricks here and both work great propane is just a little less mess if you have one at your disposal