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BUSY BOLTERS Are you one?  The Shop Area
continues to pull in the most views on the Stovebolt. In August alone there were over 22,000 views in those 13 forums.
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4 members (68ironhead, JW51, jmoore, 1 invisible),
567
guests, and
2
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics126,776 Posts1,039,271 Members48,100 | | Most Online2,175
Jul 21st, 2025 | | | | Joined: Nov 2009 Posts: 639 'Bolter | | 'Bolter Joined: Nov 2009 Posts: 639 | Just curious. What's the physical size difference, roughly, between the 228-302 and the 503 straight six? | | | | | Joined: Jan 2008 Posts: 4,903 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,903 | The 503 is a huge, heavy low RPM engine. A 302 was used in up to 450 series. In 55 a 503 appeared in a 630 series. The hood on a 630 series is about 6 or 8 inches longer in a 630 series than a 450 series if that tells you anything. My first semi was a 550 series with a 370 V8. The 370 turned out more HP than the 503 and the 550 series uses the same hood as a 450 series. | | | | | Joined: Nov 2009 Posts: 639 'Bolter | | 'Bolter Joined: Nov 2009 Posts: 639 | As I figured. I'm looking for an engine for my truck and my friend finds a 503 and says "there you go, problem solved!" Thanks for the info  | | | | | Joined: Dec 2004 Posts: 128 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 128 | | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | my friend finds a 503 and says "there you go, problem solved!" What's the price on that 503? I might be interested in acquiring it. Thanks! Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Nov 2009 Posts: 639 'Bolter | | 'Bolter Joined: Nov 2009 Posts: 639 | | | |
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