Quote:

Lets say you build a 440 and a 360 both stock stroke to make the same horse power (500hp). Do you agree the 440 will make more torque given the larger stroke? Do you think with properly matched gear and converter for the engines in say a 3000lb car will run the same ET?
If they do run the same ET does this mean the smallblock would recover in between gear changes quicker to make up for being down on torque. I am trying to end an argument, so your thuoghts please.




First, never said anything against power adders.
Second, stock strokes, NO stroker combos

Yes, they would run close in times.
Yes, A smallblock would recover a bit quicker (depending on equipment). Again, depending on eeqipment and tune, top end hp rules, (shorter strokes) if torque peaks late in the midrange.
However, a high but nearly flat torque peak in the lower midrange, (longer strokes) can be equally as strong. There is another factor in trying to measure an engines performance potential. Rod/stroke ratio. Although NOT 100% accurate, but it gives an indicator of the engines basic potential for performance, (equipment being not part of equation). 340's, for example, have a 1.84 ratio - which lends them nicely to higher rpm power.
360's on the other hand, have a 1.71 - which gives them a GREAT advantage as a midrange high hp/high torque motor. SOLID base for a stroker or "standard arm" HOT street/strip.
440's have a 1.80 - which is nearly equal in performance as the 360, but with a slightly BETTER potential for higher rpm hp.
Not to say 360's can't rpm up but it also about the equipment (parts) which makes it all happen. Given both at the 500hp level, again, they would be nearly equal. A point about the 360's rev drop, it would NOT be the same as a 340's, unfortunately! It would be at slightly lower rpm than the 340's, characteristic to the 440's (again, equipment depending!). If the 440 has a balanced bobweight LESS than the 360's, it's a wrap!! But it's not needed for a 440 at the 500hp level. 500hp 440 engine builds are standard "street-level" combos, they are unnecessary, unless you WANT TO spent a bit more money on
the parts/balance job just to "maximize" that particular combo at THAT level!! At 550-600hp or MORE, IT IS absolutely beneficial!! It would be routine for the 360 (at 500hp) since the nature of smallblocks are to rpm quicker/higher than their big block counterparts. And you would want maximum hi-rpm reliablity from your smallblock!! Anytime you can REDUCE reciprocating weight, you are adding rpm and possibly more torque.




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