Question about torque. - Page 6 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

chevy454 · 10-08-2009, 02:22 PM

Quote:

Originally Posted by SlingShot

Part of the 302 design that made them awesome, was the fact they were "oversquare" engines. The oversquare engine is one that is designed with a larger bore than stroke. With this design they were able to maintain mandated engine size. Also with the smaller stroke the engines reached their max power and rpm faster, and were able to keep it there longer without the engine blowing. To this day the NASCAR engines are designed the same way.

A larger version is the modern day NHRA Pro Stock engine...500ci, huge 4.6"+ bores, ~1400hp...that's over 2.8hp/ci, which is *insane* for a naturally aspirated engine. There's a give & take with every combo, but 2 big factors on oversquare engine are valve area and less reciprocating mass...

nekbrkr · 10-09-2009, 01:18 AM

think of this ,torque goes up and down according to gear ratio, example 400 hp with a 3:9:9 gear gives you 390 ftlbs +or-, the same 400hp with a 4:10 gear gives you 500ftlbs apx does this help?

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10-09-2009, 01:18 AM	#72
nekbrkr nekbrkr Drives: 2010 rs/ss Join Date: Sep 2009 Location: NM Posts: 7	think of this ,torque goes up and down according to gear ratio, example 400 hp with a 3:9:9 gear gives you 390 ftlbs +or-, the same 400hp with a 4:10 gear gives you 500ftlbs apx does this help?