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How does one determine whether an engine is a 2 bolt main or a 4 bolt main?
Wiki User
∙ 12y ago
with oil pan off,look at your main bearings on your crank shaft,the cover of the bearing will have one bolt on each side this is two bolt main or two on each side this is four bolt main
AnswerTo tell if a motor has 2 bolt or 4 bolt main caps, you must remove the oil pan and inspect the main bearing caps for the crankshaft. If 2 bolts are present, it's a 2 bolt motor and if 4 bolts per cap are present, it's a 4 bolt motor.Most truck engines are 4 bolt - most low perf car engines are 2 bolt - this isn't always the case, but a good place to start if you're hunting for a particular engine.
this is a inboard marine engine still working impossible to remove pan without removing engine . That's why the s\n
Wiki User
∙ 12y ago
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What do you torque the main bearings down to in a 1991 Chevy 350 2 bolt main engine to?
70 ft lbs
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Is engine 3970044 2 bolt or 4 bolt?
i have a engine with this # and its a 2 bolt main
How do tell four bolt main from two bolt main?
To tell if your engine is a 2 bolt main or a 4 bolt main. Turn the engine upside down on an engine stand. Next, count the number of bolts on each main bearing cap. if there are two, then its a 2 bolt main. And if there are4, then its a 4 bolt main. This applies to the three center caps. The front and rear are always 2 bolt.
Is their a way to determine whether your 454 marine motors are 2 bolt or 4 bolt main without pulling the motors to get to the oil pan?
no there is no way to tell without removing the pan.
Does a 1992 Chevy k1500 pickup have a 2 or 4 bolt main?
If it's the factory engine, then it will be a 2-bolt main engine.
Can a 4-bolt main 350 engine fit in an 88 silverado 1500 with a 2 bolt main engine?
No it wil not. You will have to remove the 2 bolt engine out of the truck and then replace it with the 4 bolt engine. 2 engines will not fit in one vehicle silly wrench puller.
Is a rebuild kit for 350 engine same for 2 bolt main as a 4 bolt main?
no cause a 4 bolt main has 2 extra bolts on each main
Was the 2000 3500 dually 5.7 l a 4 bolt main or 2 bolt main?
That would be a 4-bolt engine in that truck.
What is 6 bolt main 350?
It is a small block Chevy 350 engine with 6 bolt main caps.
Does a four bolt main come in a 1991 silverado?
If it is a 1/2 ton. NO they all had a 2-bolt main engine in them. Now if it is a 3/4 or 1 ton truck then the odds of it being a 4 bolt main engine is about 100%
Does a 1972 350 Ci truck engine have a 2-bolt or 4-bolt main?
should be 4-bolt
Is the 1991 350 Chevrolet half ton a 2 or 4 bolt main engine?
That would be a 2-bolt main in that truck for sure.
Did a 1976 Chevrolet c-20 van have a 2 or 4 bolt main?
That year came factory with a 4-bolt main engine.
