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Post Info TOPIC: 250 inline six
72 luxo


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250 inline six
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If a car came with a 250 inline six from the factory, what automatic trans would be behind it, I believe a TH350 would be the factory installed unit. Some people tell me that the TH 250 or 275 would be used, but I have never heard of those trannys, any thoughts.

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4SPEED427


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What car is it in?

If it's early 70's I would say TH350.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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427carl


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The 250

The 250 was launched in 1966 cars and trucks with a bore of 3.875 inches and stroke of 3.53 inches.

The 250 generated 155 horsepower.
  
It was the base engine for 1966 to 1979 American passenger cars and 1966 to 1984 American trucks.
 
The 250 in all cars were often coupled with the standard two-speed automatic transmission.

 But the straight-six was doomed since the mid-1970s when GM began experimenting with a new V-6.
 
The 250 stopped production in 1979 and was replaced by GM's 2.8-liter V-6, which was based on the V-8 design, but with two cylinders lopped off the end.

-- Edited by 427carl on Sunday 24th of January 2010 11:58:35 AM

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4SPEED427


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Sorry, I missed the point of your question. I assumed you knew it was a 3 speed in a particular and wanted to know which one.

As Carl posted, a powerglide was commonly behind the 250 unless the 3 speed was ordered.

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
Taylor55


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While on the subject of the Chevy six, how do you tell the difference between the 250 and the 230 six cylinders?  I have a complete low mileage chevy six from a 67 Chevelle sitting on an engine stand in the shop I would like to know if it is a 250 or 230.

Thanks Al



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Beaumont4008


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Taylor55 wrote:

While on the subject of the Chevy six, how do you tell the difference between the 250 and the 230 six cylinders?  I have a complete low mileage chevy six from a 67 Chevelle sitting on an engine stand in the shop I would like to know if it is a 250 or 230.

Thanks Al


I think you would have to look for the engine two letter suffix code found on a pad near the distributor. Find that and we can look that up.

 



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427carl


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Taylor55 wrote:

While on the subject of the Chevy six, how do you tell the difference between the 250 and the 230 six cylinders?  I have a complete low mileage chevy six from a 67 Chevelle sitting on an engine stand in the shop I would like to know if it is a 250 or 230.

Thanks Al


         look at the decal on the engine   1 says 230  and the other says 250 evileye

 



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chader


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hahahaha...I wanted to say that

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gus


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194,230,250 LOOK ALL THE SAME TO ME EXCEPT WHERE THE DIP STICK IS,SEEN THEM UP NEAR DISTRIBUTER/ AT MOTOR MOUNT/BACK AT STARTER? WHY DIFFERENT YEARS?

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Bobby J
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gus wrote:

194,230,250 LOOK ALL THE SAME TO ME EXCEPT WHERE THE DIP STICK IS,SEEN THEM UP NEAR DISTRIBUTER/ AT MOTOR MOUNT/BACK AT STARTER? WHY DIFFERENT YEARS?


Chevy 2 style ones were at the front infront of dipstick for the front sump
Fulsize chevys were in the mid location for 63/64  mid sump pan
chevelles, beaumont, and  65 and up fulsize were at the rear.

The blocks will all interchange in those vehicles, but you must match the pan with the oilpump pick-up.

Also be aware of the pan and dipstick configuration, or you may not be able to check your oil base on the type of car you have!

 



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gus


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Thanks, You answerd my question

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Bobby J
72 luxo


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Thanks for the info guys. The car that its in is a 1978 chevrolet Bel Air 4 door sedan that I just purchased off Kijiji, I need help documenting this car, as its very straight and original, I will post some pics today. Would GM of canada be able to help me out?

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