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How do you tell a SBC 400 from a 350?
Check the bore on the engine if the heads are off. The Chevy 350 cubic inch engine has a 4-inch bore whereas a 400 cubic inch engine has a 4.125-inch bore. The 350 has a 3.48-inch stroke, and the 400 has a 3.75-inch stroke. The 350 rods are 5.7 inches whereas the 400 has 5.565 inch rods.
What years did Chevy make the small block 400?
The largest version of the Generation I small-block was the 400 (6.6 liter). It was the only engine available with both the 4.125-inch bore and the 3.75-inch stroke crankshaft. It debuted in 1970 and was produced for 10 years.
What cars did SBC 400 come in?
Re: What cars did the SBC 400 come in? ( Also in some 1/2 and 3/4 trucks, including vans. Some with 4-bolt mains, but they’re not necessary. The Trans-Am has a Pontiac 400; whole different motor.
How much horsepower does a SBC 400 have?
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. We were underwhelmed.
What year was the 400 SBC made?
1970
The largest version of the Generation I small-block was the 400 (6.6 liter). It was the only engine available with both the 4.125-inch bore and the 3.75-inch stroke crankshaft. It debuted in 1970 and was produced for 10 years.
What did a 400 SBC come in?
The 400 saw extensive use in full-size Chevrolet and GMC trucks; K5 Blazer/Jimmy, 1/2-ton, 3/4-ton, 1-ton, and even larger ‘medium duty’ trucks had an option to be equipped with a 400. The engine was available in midsize A-Body and full-size B-Body passenger cars until the end of the 1976 model year.
What are the cast numbers for a SBC block?
SBC Block Casting Numbers Casting Number Size Year Main Bolts Notes 140029 350 80-84 2 330817 400 72-80 2 355909 262 75 2 355909 305 76-79 2
What does the casting number mean on a block?
As the name infers, the casting number is cast into the block when the block itself is cast. This casting number will denote engine displacement, 2 or 4 bolt main caps, application year or year range, and often any specific application notes.
What is the crankshaft cast number for a 400 engine?
The 400 castings are 3951629 and the 350 are 3916396. But I can’t find that number anywhere on the rods. Any help would be great!!!! According to Mortec.com the 400 crank cast # is… TO613CSK = where block was made and last 3 letters denotes type of vihicle engine was installed in. But I don’t have a source to decode that.
Where are Chevy small block casting numbers located?
Where Are Chevy Small Block Casting Numbers Located? On a small block Chevrolet, the casting number is found at the rear of the block on the driver’s side (as is with Chevy’s big block engines).