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horsepower in a 403

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Old June 27th, 2008, 11:38 AM
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horsepower in a 403
whats the factory horsepower in an olds 403. thanks
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Old July 21st, 2008, 07:38 PM
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175hp 310 ft lb torque (as in tech link on home page)
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Old July 22nd, 2008, 07:11 AM
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By the way, the 403 is a small block (yes, it's confusing since the 400 is a big block).
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Old July 28th, 2008, 05:41 PM
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Sheesh!
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Old July 28th, 2008, 06:01 PM
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IMO, for a build up the 403 isn't the best choice.

Windowed mains make for a weaker block.

A stock build, it should be fine
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Old July 28th, 2008, 06:29 PM
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Neither is a 350 but I did it anyway.
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Old July 28th, 2008, 08:13 PM
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Originally Posted by Redog
........ for a build up the 403 isn't the best choice.

Windowed mains make for a weaker block ........
Haven't we been through this "internet myth" thing before?




403 powered 78 Olds 98 @ 4000 lbs

Class record holder: 11.21 @ 117 miles per hour

Originally Posted by Redog
........ A stock build, it should be fine ........
Now that I think about it, Her 403 is pretty close to stock.

Norm
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