Best overall SBF combo for a street/strip Cobra

[My427stang]

I have to back Brent here. Displacement makes power and torque, if a longer stroke for a given displacement was to make anything different, it would only go down in HP and TQ assuming a valve shrouding problem due to the smaller bore.

As far as the bike pedal comparison, yes, there is leverage with the longer pedal, but there is a fatter rider with the bigger bore. More surface area pushing down seems to equalize the leverage advantage if there is one

It is very wild, I used to think the same thing, but as long as they both breathe the same, a given setup will make almost identical HP and TQ per CID.

I also agree that rod length has been over-hyped, a nice stable piston with a good weight for the RPM desired and enough room to not hit the counterweights...after that, just connect them.

[Streetwize]

Well, I still respect you

But I understood basic engine theory and was building motors .....long before the internet.

Here's where I think we're 'Apples to Bowling Balls'

I think where we are "not synching-up" is I believe you are looking more at the WOT and HP/torque output....but what I am speaking more about part throttle/roll-on power and torque....and this is particularly where a longer stroke motor tends to produce better torque for drivability. How it feels just driving around.

But I agree 100% that if PEAK POWER is the primary objective, you can build a combo that can produce equal or near equal results. but thats not really what I'm referring to

Please think about this:

If you built 2 motors on your dyno with the same cubes, heads, compression and cam timing but one with a long stroke and one with a short stroke, they might make around the same power and torque....as long as you start the pull at ~3000 or 3500 rpm.

Now, try the same test starting to load up the motor at only 2000 or 2500 RPM....I can about guarantee you the longer stroke motor will accelerate harder. Because the longer (bicycle pedal, lol) generates intake runner VELOCITY sooner, which helps get it up on the cam sooner.

^^^^ THIS is my (only) point....3000 or 3500 for a dyno pull is great, but we all know that less than 2500 is really much much more realistic for a true street driven car, regardless of the weight.

Again, I'm talking more part throttle and roll-on drivability torque...not how much peak HP or Peak torque.