using a stock 1990 Sbc 350 block will the block need indessing to use this crankshaft

this will not fit that block, you need a 1 pc rear seal 383 crank....

Amazon sales this as a 383 crank not 400 the one i got was a 400 crank 2 piece main wrong crank and is not as pictured .

the eagle part # comes up as a 400 crank..

What year will it fit?

The small block 400 was made from about 1970- to about 1980. these were all 2 pc rear seal, this will fit all of them. there is also many aftermarket blocks this should also fit almost all of them if they are 2 pc. rear seal. I have bean told that it will work with 5.565 inch connecting rods, i have not had a chance to fit this up and check that, as it says it is made to clear 5.7 rods..

Two piece rear main oil seal?

yes is pre 1986 2 pc main standard size SBC 400 Crankshaft

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EAGLE SPCLTY Eagle Specialty Products 104003750 3.75" Cast Steel Crankshaft for Small Block Chevy

Product ID: 60866631

📏5.7" rod length compatibility

⚙️3.75" stroke precision

🛠️Cast steel durability

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Description

⚙️ Unlock your Chevy’s true potential with precision-crafted power!

PRO GRADE COMPATIBILITY - Perfectly matches 5.7-inch rod length setups for seamless installation and peak output
RUGGED CAST STEEL BUILD - Durable cast steel construction ensures long-lasting reliability under high stress
BALANCED FOR PERFORMANCE - External balance with 1870 bobweight for superior engine smoothness and efficiency
TAILORED FIT FOR CHEVY 400 - Specifically designed for Small Block Chevy 400 engines with 2-piece rear seal
PRECISION ENGINEERED STROKE - 3.75-inch stroke for optimized power delivery and smooth performance

The Eagle Specialty 104003750 crankshaft is a 3.75-inch stroke cast steel crankshaft designed specifically for Small Block Chevy 400 engines. Featuring a 2-piece rear seal and external balance with a 1870 bobweight, it supports 5.7-inch rod lengths for optimal engine performance and durability.

Specifications

ASIN	B000CNBN3S
Best Sellers Rank	#3,337,528 in Automotive ( See Top 100 in Automotive ) #15 in Automotive Performance Engine Crankshafts #777 in Automotive Replacement Engine Crankshafts
Brand	Eagle
Customer Reviews	4.5 4.5 out of 5 stars (9)
Date First Available	November 23, 2005
Exterior	Per Item Description
Item Weight	24.5 pounds
Item model number	5.1101G
Manufacturer	Eagle Specialty Products
Manufacturer Part Number	104003750
Model	JEGS
OEM Part Number	104003750

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S$1142

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.

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TrustScore 4.5 | 7,300+ reviews

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