The best stroker 408-416-426-435 combination in stock 68 340 block
What’s the point?
Ummmm, more torque equals more HP?
Or did I miss that?
You rambled on about how the stroker is so woefully inefficient that it is pointless to build one.
YR, both have the same cam and compression carb and intake & headers.
The test is not meaningless. It shows how everything else is the same except one has a 3.58 vs the 4.0 stroke.
There showed you what a stroker does as far as power output. There not doing rocker science dyno work. Just basic comparison work.
If you pause on the two cuvres at 10:09
yes it looks bad for the 360, on the dyno the 408 wins but not necessarily in a car it does.
At 1st before I overly went over the dyno curves just by hearing the 360 made more lbs-ft per cid I figure the 360 had the clear advantage but looking at the hp curves more closely they are basically on par which Ive been say since this discussion started.
The 1st problem we read too much into the torque its really telling us nothing here its kind of misleading. Which I will show.
Look at the two hp curves thats the real story. Yes the 408 looks better. But think of it in a car. The 360 will or should have more gear since the hp curves are about 300 rpm apart the 360 gears need to turn about 300 rpm per mph more. Which probably be one step deeper gear wise.
So you cant compare the 360 and 408 at the same rpm since the 360 will always be turning about 300 rpm more you got compare the hp points 300 rpm apart.
So start at the 408 3000 rpm but disregard the first 3 points of the 360 and start with the forth at 3300 rpm. Thats both hp curves lined up.
So for the 408 at 3000 - 4000 rpm the 360 at 3300 - 4300 rpm the 360 actually does better where if you looked at the torque curve its saying worse thats why torque readings are misleading at best. And 408 at 4000 - 5000 rpm compared to the 360 at 4300 - 5300 are on par or slight advantage for the 408. The 408 at 5000 - 6000 rpm has the advantage over the 360 from 5300 - 6300 rpm. Doesn't show above 6000 rpm but looks like the 360 wont fall off as hard, more room for shifting. But we're not talking huge advantages just about 10 hp at each end so basically par.
That why Im alway saying torque curve dont matter. Cause its misleading it dont take in account of gearing and thats why gearing is important. If you ran 3.55 with both these engine the 408 would win. But if you stepped the 360 to 3.73 gear than be probably on par.
And yes you could run more gear in the 408 but if you took it to the optimal gear for both the 360 will be turning about 300 rpm higher.
Its actually funny cause the 360 has the advantage on bottom of each gear and the 408 on top opposite of what you would think.
So in this case is it worth stroking to be able to run one step less gear ?