I have removed all the bolts on the edge but the intake still won't braek loose. There are recessed allen head bolts on top of the manifold. Do they need to be removed? Do I need to remove the valve covers?
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If intake and all head bolts are removed, chances are the head is stuck to the gasket/block. The head will normally sit upon 2 dowel pins which will also,hold it secure. Use a prybar and gently apply force to the head. It will come loose
many times the intake won,t just lift off.sometimes you must use a pry bar to lift it up.you must put the pry bar under the edge and carefully pry it loose but be careful not to break the edge.i assume you double checked to see if you missed a bolt.good luck.
The thermostat is located in the forward most part of the intake manifold directly in the center. It is located in an in-closed housing with 2 studded bolts. Simply follow the Large water pump hose on top of the intake manifold to it. You don't need to remove this housing, just remove the 2 bolts and lift up the housing with the large hose attached to it. The thermostat will be sitting in the recessed area of the hole in the intake manifold.
Remove ignition coil, AIR pump, cruise control servo and brackets, as needed.
Remove alternator upper mounting bracket and EGR solenoids.
Remove manifold retaining bolts and the manifold.
Reverse procedure to install, noting the following:
Ensure surfaces are clean and dry, then apply 3/16 bead of RTV sealer on each block ridge and apply suitable sealer around water outlets, install gaskets and secure gasket position by extending bead of sealer approximately 1/2 inch onto gasket ends.
Install manifold and retaining bolts, ensuring areas between case ridges and manifold are completely sealed.
Torque manifold bolts to specifications in sequence shown in Figs. 2 and 3.
After installing carburetor or TBI unit, check to ensure no fuel leakage is present.
Rearm airbag system as described under MAINTENANCE PROCEDURES/AIRBAG SYSTEM DISARMING
First, make sure you are 100% sure of having all bolts removed. Use a small mirror and flashlight if needed to check around all edges - 360 degrees. If there are hard to reach/see places, triple check those.
Once you're sure, it's probably just that the pressure and heat almost fuses the parts together, so some effort is required. Try using a rubber mallet or a small block of wood and a hammer, so that nothing too hard hits the manifold. Try tapping the manifold from the sides in the direction of sliding it across the face of the engine, not pounding it down onto the engine.
Don't hit it too hard, just lots of light taps to slowly break the seal between the manifold, gasket, and head.
2bbl intake will not fit 87-95 small blocks heads are diferent from pre 86.the center bolts on your manifold are angled different than the front and back bolts.your 2bbl manifold has the same angle bolts front to back.i converted my buddies 89 to carb,had to make adapter plate for carb.but to make a long story short there is a lot of power loss and fuel economy your better of with tbi.