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Old 08-21-2021, 04:23 AM
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Quote:
Originally Posted by MarcDant View Post
Was a 273 commando a solid lifter 275 hp. Thanks
Yes.

"Though the Power Pak 273 used the same block, main caps, forged crankshaft, forged rods, cylinder heads, 1.78/1.50 inch (I/E) valves, adjustable rocker arms, exhaust manifolds, and oil pan as its plain vanilla two-barrel sibling, Chrysler upgraded everything else. With its 480-cfm Carter AFB four-barrel, domed, 10.5:1 pistons, hotter 0.428-inch-lift solid cam, chromed 10-inch air filter, dual point distributor, and free-flowing single exhaust system, the Power Pak goodies bumped the two-barrel mill's 180 horses at 4,200 rpm and 260 lb-ft at 1,600 rpm to a much more exciting 235 hp at 5,200 rpm and 280 lb-ft at 4,000 rpm."

motortrend.com/how-to/testing-mopar-273-power-pak-dyno/
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  #12  
Old 08-22-2021, 01:55 AM
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Quote:
Originally Posted by Lee Stewart View Post
5000 RPM. The 440+6 was not a high rev engine.
Correct, or about somewhere between 12 and 1 on the tic-toc-tach
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Old 08-22-2021, 02:02 AM
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Old 08-22-2021, 02:06 AM
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1965 A990 Race Hemi. The only Hemi to come from the factory with Chrome Valve Covers

Last edited by Lee Stewart; 08-22-2021 at 02:09 AM.
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Old 08-22-2021, 02:13 AM
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Old 08-22-2021, 05:07 AM
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Always so impressive. Thank you for the pics
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