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Because of thicker cylinder walls, good 283 blocks from 1957 can be bored as much as 0.120 over. This helped bring the stated horsepower up to 185 horsepower (from 162) for the single carburetor version.

Please use the above measurements and information to compare to your original alternator, to ensure correct fitment for your vehicle. Bigger Bores: To get to 283 cubic inches in ‘57, Chevrolet punched out the 265 version’s cylinder bores from 3.75 inches to 3.875.

Total length from the front of the rotor shaft to the deepest point at the rear of the case is approximately 165mm.

Utilizes the the standard GM 10SI style case with 6.600” bolt centres.

The measurement between the mounts from the bolt centres is 6.60".The measurement between the mounts from the inside edge, to inside edge is 159mm.Mounts measure approximately 18mm outside depth on the short side, 51mm outside depth on the long side.Suitable to replace existing 1 wire, internal regulator GM style alternator. You can buy factory price hight output from a great list of reliable China hight output manufacturers, suppliers, traders or plants verified by a third-party inspector.Maximum Voltage (Any Terminal vs GND) 283 V AC/400 V DC. Supplied and fitted complete with matching black alternator pulley Input range: (Low / High Scales): -80 +80 V/-800 to + 800 V (user-selectable through software).Factory load tested and certified before being packed.Powder Coated Black for a functional and durable finish.Proflow PFEPM37293BK 140 Amp Black Alternator.Powder Coated Black for a functional and durable finish.ĭon't waste big dollars having your original alternator rebuilt, when you can buy a Genuine Proflow 140 Amp Black Alternator with internal reg at such a bargain price! Supplied in a one-wire hookup configuration enabling you to run a single wire from the alternator to the battery (positive). Remember, Proflow are the leaders in performance products!Īssembled with top quality components and factory load tested to meet or exceed OEM specifications and ensure the highest output possible at low RPM. Proflow take pride in every part they make. Rapid prototypes are created to guarantee perfect fitment, as well as pleasing aesthetics. Proflow products are computationally optimized and tested within their own engineering department.

Suitable for GM Small Block Chev V8 283, 307, 327, 350ĭesigned and engineered in-house, Proflow products are manufactured to the highest of standards. Proflow Powder Coated Black 140 Amp Alternator with Internal Regulator