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400 is a fine engine, but you didn't say what the factory specs were, or it's original use, so I can't tell you what HP it could be, this is because that particular engine can be altered to say pull a boat, like in a truck use, or as a screamin de-stroke, 383, which is a fine street powerplant.
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How much horsepower does a 400 small-block have cast number 3951509. out of a 77 4x4?
The original horsepower for a 400 small block, cast number 395-1509, was 295. The 400 small block engine had many variations resulting in different amounts of horsepower.
How much horsepower does a stock 1976 small block Chevy 400 come with?
Advertised horsepower is: 175 HP @ 3600 RPMs.
What is the horsepower rating on the 1975 Chevy small block 400?
280, to 300. NEW ANSWER: Straight out of the book. Advertised Horsepower is-175 HP @ 3600 RPMs. That engine STOCK didn't have HORSEPOWER it had torque
How much horsepower does a 400 small block with a RV cam and a 4 barrel holly throttle body fuel injection have?
it has 3.5
How much horsepower does a Chevy 400 smallblock have?
It depends on what year it was made, and what it was installed in. Chevrolet never made a high performance 400 small block. They used the 396/402 for high performance applications. The small block 400 was typically installed in heavy cars like station wagons.
How much horsepower does a 1975 400 small block have?
stock around 180hp with the 2 barrel and a little less with th 4 barrel
What is the cylinder bore on a 400 small block?
a 400 small block Chevy has a 4.125" bore.
What is the stock horsepower of a 1976 400 dodge big block?
211 hp
What year did they stop making the 400 small block Chevy?
1981 was the last year the 400 small block was made.
Will a transmission from a 400 small block fit a 350 small block?
Yes.
What is the firing order for Pontiac 400 engine both small block and big block?
The firing order for the Pontiac 400 engine is that the small block powers the big block.
Is the 400 a small block or big block?
The 400 Chevy is a small block engine. The 400 BIG BLOCK Chevy does not exist! 402 big block Chevy does. it seems in the early 70s Chevy put 402s in their pick ups and they had 400 badges. this opened the can of worms known as the non-existant big block 400.
