Quote:
Originally Posted by Noble713
The first engine that came to mind was the 2014 Corvette's LT1, generally lauded for the numbers it puts down. With a 6.2L V8 putting down 465tq @4000rpm it comes out to.....75tq/L. Same as the FA20! I was quite surprised.
Next up is the 458 Speciale's 4.5L engine, which I believe has the highest specific output for an NA V8. 398tq @6000rpm or 88.4tq/L.
Or we could look at the SLS AMG, also a 6.2L V8 and the most powerful NA V8 (max hp). Torque is 479@4750rpm for 77.26tq/L.
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Yep, and all of those numbers are taken at higher RPM too - this engine really does have impressive torque at low RPM for a 2L NA. That Ferrari engine almost definitely is below 75 ft-lb/L at 3krpm, for example, and really needs to rev high to put out the big numbers (similar to the 911 GT3 I mentioned above). That Corvette number is surprising though - I didn't realize they put out that much specific torque.
Quote:
Originally Posted by Noble713
So other than the marvel of GM's small block you really need to hit supercar territory (or a higher-spec Mustang) to get some decent numbers.
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Wow - I wouldn't have expected the Mustang to put down those kind of numbers either (I just ran the numbers for a Mustang GT: 78 ft-lb/L). I really didn't expect the American V8s to put down such excellent numbers. They don't have very good specific power output (mostly because they don't rev as high, or breathe as well at high revs), but their specific torque is really quite good, especially at their price point. Similarly, the V6 Mustang looks like it puts down 76 ft-lb/L, which is also excellent.
Quote:
Originally Posted by Noble713
What I'd really like to see are hp and tq numbers for
a) total engine volume (use a bounding box of external dimensions)
b) total weight
c) $ (both for cheapest vehicle featuring the engine, and as a crate engine).
^I'm almost certain the GM Small block wins most of those hands down, but I digress....
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I suspect the LS7 does win most of those hands down, except possibly the per dollar metric, which might actually go to the Mustang V6. 305hp for 22,200 base MSRP is pretty hard to beat in that regard...