How much HP can you get out of a 400 SBC?

With our low-compression, power-adder friendly 400-inch small-block easily exceeding 525 hp, it was time for some boost.

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How much power can a stock 400 SBC handle?

Registered. I agree 500 HP and 6000 to 6500 is max. Its not just the crank you need to worry about though. The stock 400 blocks are weak in the casting around the mains and are bad about cracking or busting.

Are 400 SBC good motors?

Evening all… the 400 is a great motor especially for street use. It has the power where you really need it. As far as overheating goes, make sure you have a good cooling system and you should be fine.

Does a SBC 400 need steam holes?

The 400 ci block is the only Chevrolet small-block that has the steam holes on the deck surface. The Chevrolet small-block is by-far one of the most versatile V8 known to man.

How much horsepower would a stock 400 SBC with Vortec heads?

401 hp
In case you missed the story, the best power numbers were gained with a set of GM Performance Parts Vortec heads supplied by Scoggin-Dickey, and even then the 400 small block Chevy managed only 401 hp and 458 lb-ft of torque….400ci Engine Blueprinted.

Operation	COST
Hone damper	20.00
Machine Work total	$810.00

What cubic inch is a 400 bored 40 over?

The Big Al A SBC 400 block going . 040 over, 4.165 bore.

How much HP can a 2 bolt main SBC handle?

2-bolt mains with aftermarket studs are stronger than 4-bolt mains, less prone to cracking, and can handle up to 600 HP on seasoned blocks.

What size heads for 406 SBC?

Henderson Power Sports tops 600 hp with a 406-cube pump-gas hydraulic-roller Chevy 400 small-block

BY THE NUMBERS
406 Chevrolet Small-Block
Rods:	Eagle 6.00 inches
Cylinder head:	AFR 235
Intake valve diameter:	2.125 inches

Will 550 hp fit in a 400?

550 HP is very obtainable with a 400, 383 or even a 355. The problem you may run into is will 550 HP put you in the low 10’s. Depending on the weight of your car, I would have to say no.

How much horsepower does a Vortec 400 motor make?

With the stock Vortec heads, the low-compression 400 managed to make 376 hp and almost 450 lb-ft of torque. Edelbrock Vortec Perf. RPM intake

How much HP does a 406 motor make?

Here’s a link to a CHP article where Coast High Performance builds a 406 that makes 583 hp. The article includes a build sheet for the motor. What internals are in your 520 hp small block 400?

What is the best 400 block for a 600 horse?

OEM 400 blocks are a crap shoot at 600 and even at 450 horse. I would go with the Dart SHP or the SHP Pro block both are good choices over any 400 block. Here is a link to look over. How fast do you want to go?

https://www.youtube.com/watch?v=HdLacRyqBGY