Cadillac engine knowledge
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===Oil pumps=== | ===Oil pumps=== | ||
| − | There are different oil pumps for the big Cadillac engines. One faces forward from the block at a 45 degree angle downward. The next faces downward 45 degrees and points right toward the bottom of the crankshaft pulley. There is another, that has been described as pointing more outward than the first one described. These can all be interchanged, but make very sure to properly clean the oil pump and block mating surfaces and always use a new oil pump gasket. The correct gaskets will be from major gasket manufacturers, and should be only something like 0.005" thick | + | There are different oil pumps for the big Cadillac engines. One faces forward from the block at a 45 degree angle downward. The next faces downward 45 degrees and points right toward the bottom of the crankshaft pulley. There is another, that has been described as pointing more outward than the first one described. These can all be interchanged, but make very sure to properly clean the oil pump and block mating surfaces and always use a new oil pump gasket. The correct gaskets will be from major gasket manufacturers, and should be only something like 0.005" thick. An oil pump gasket that is too thick will cause more oil to bypass the pump gears and allow more end play of those gears too, something you do not want. |
====Oil Pans==== | ====Oil Pans==== | ||
Rear wheel drive pans used a front sump pan and pickup. The Eldorado used a rear sump setup. Later 425's and 368's used a mid-sump style. The latter two pans are what you would typically use for most engine swaps. | Rear wheel drive pans used a front sump pan and pickup. The Eldorado used a rear sump setup. Later 425's and 368's used a mid-sump style. The latter two pans are what you would typically use for most engine swaps. | ||
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One nice thing about the Cad pumps is that you can use a Q-jet jet to shim the stock pump spring to boost oil pressure. 10-12 psi per 1000 rpm is good. Make sure that, after you do this, you run an electric drill onto the oil pump shaft to prime the engine. Try and use the front sump oil pan design to eliminate the longer pickup; this will help keep the engine primed, as well as a thick motor oil. If only a new pump design would be made for these engines...but, as always the suffering to build a Cad right goes on. | One nice thing about the Cad pumps is that you can use a Q-jet jet to shim the stock pump spring to boost oil pressure. 10-12 psi per 1000 rpm is good. Make sure that, after you do this, you run an electric drill onto the oil pump shaft to prime the engine. Try and use the front sump oil pan design to eliminate the longer pickup; this will help keep the engine primed, as well as a thick motor oil. If only a new pump design would be made for these engines...but, as always the suffering to build a Cad right goes on. | ||
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===Clearance issues=== | ===Clearance issues=== | ||
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