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Q: Is this vortec 10243880 a 4 bolt main?
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What are the torque specs for a vortec Chevy 350 two bolt main?

Main bearing torque on 98 Chevy 350 4 bolt main?? The main bearing caps should be torqued to 70 ft. lbs.


What is better a 2 bolt main or a 4 bolt main?

4 bolt main


Will a transmission from a 4 cylinder s10 work on a vortec 4.3?

No, different bolt pattern.


Does a 1999 Chevy suburban 350 have a 2 bolt main or 4 bolt main?

1500--2 bolt, 2500 4 bolt


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


What is the difference between a 2 bolt main 350 and a 4 bolt main 350 Will a 2 bolt hold 500hp?

The difference between a 2 bolt main and 4 bolt main is how many bolts hold the caps that hold on the crankshaft. (A 2 bolt main has 2 bolts to every cap and the 4 bolt main has 4 bolts to every cap) A 2 bolt main should be able to handle 500hp as long as you don't push it above 5500RPMs.


Hot rod car do i want a 350 4 bolt main or 2 bolt main?

4 bolt their stronger better lasting


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.


Does your 1975 Chevy truck have a 4 bolt or a 2 bolt main?

4


Will a 89 350 bolt up to vortec heads?

Yes an 89 350 will bolt up to original Vortec heads. However, Vortec heads have an 8 bolt inatke manifold that is different from the standard 89' intake. Its worth mentioning that the intake manifolds changed in 1986. Prior to 1986 all intake manifolds for a sbc had 12 bolts. These 12 bolts all secured the intake to the head at the same angle. In 1986, or primarily in 1987 the intakes 4 center bolts were changed to a steeper angle. With the introduction of the vortec head came a new 8 bolt intake eliminating the 4 center bolts. If you plan to use Vortec heads on any V8 be it a 305,327,350 or bigger, you will need a Vortec intake manifold as well. You can also buy an after market intake to run a carburetor on a set of Vortec heads in place of the TBI injection.


Do pontiac's350 have 4 bolt rear main?

I can't answer your question but I can say that my 260 hp 350 Mercruiser has 2 bolt mains and a 4 bolt rear main. Go figure! So I take it from your question that you also have 2 bolt mains with a 4 bolt rear 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.