What kind of compression does a Magnum have?
Cleanup is a snap as well. They seal well and increase compression significantly over stock. With a true 58cc casting such as the EQ Magnum or Edelbrock Performer RPM heads you’ll be in the vicinity of 9.5:1 compression with the stock short block.
How much horsepower does a Magnum engine have?
Edelbrock does not sell their Magnum heads with the LA intake bolt pattern. Magnum engines have more consistent machining than their LA predecessors, but the factory piston is still about .050 inches down from top dead center on most engines. This reduces compression potential, and thus horsepower.
Where does compression start in a four stroke engine?
Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are closed during this stage. Combustion: Also known as power or ignition.
What happens when there is no compression in the engine?
If there is no compression, then your car will not start. The timing belt connects the crankshaft and camshaft. When it is loose or broken, then the intake and exhaust valves will not open. Most of the timing belts are made from rubber and you will need to replace one after every 110, 000 miles.
Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are closed during this stage. Combustion: Also known as power or ignition.
Do you have to change the intake manifold on a Dodge?
This also prevents having to change out the intake manifold to fit. If you do go with the stock 360 heads, you have to stick with a 360 intake, for the 340/360 heads and 318 intake do not match, and vice versa.
Why are exhaust valves sunk on a 1969 Dodge 318?
Here is the hard thing to deal with on the 318 head of 1969: The exhaust valves will be sunk within a couple years because the seats are not hardened and need the leaded gas to survive. Figure you can get approximately 25,000 miles out of the heads before they are affected completely by sunk valves.
What does the exhaust do in a four stroke engine?
Exhaust: Also known as outlet. During the exhaust stroke, the piston, once again, returns from B.D.C. to T.D.C. while the exhaust valve is open. This action expels the spent air-fuel mixture through the exhaust valve. These four strokes can be remembered by the colloquial phrase, “Suck, Squeeze, Bang, Blow”.