Started this thread to settle the debate of new to old, which engine of similar displacement has the advantage below 3000 rpm with similar HP.
Lets see who can come up with dyno graphs to support their views, I'll start...heres some 500 HP dyno numbers for a SBC.
383 from AFRs website, 195 heads 9.5:1 compression...nice street engine. Everyone has seen this kind of build before...pretty common.
Peak HP=506@6000rpm, torque=520ft/pds@4000rpm
https://www.airflowresearch.com/chevy_dyno.php
Whats important here isn't the peak HP, its the torque under 3000 rpm.
HP/torque=262/454 @3000 rpm
Next on the list is a similar LS3 built up by Crane to showcase their aftermarket cams.
LS3 x 3 – Comparing Three Performance Cams on the Engine Dyno - EngineLabs
Note the 500.9 HP version peaks at 6100 rpm with a peak torque of 488 at 4800 rpm.
More important to note the torque below 3000rpm, 238HP & 418ft/pds @3000.
This is where the SBC really shine folks...under 3000.
Alright who has a dyno sheet for an LS3 that tops that at similar HP, Im looking at you AP72.:thumbup:
Lets see who can come up with dyno graphs to support their views, I'll start...heres some 500 HP dyno numbers for a SBC.
383 from AFRs website, 195 heads 9.5:1 compression...nice street engine. Everyone has seen this kind of build before...pretty common.
Peak HP=506@6000rpm, torque=520ft/pds@4000rpm
https://www.airflowresearch.com/chevy_dyno.php
Whats important here isn't the peak HP, its the torque under 3000 rpm.
HP/torque=262/454 @3000 rpm
Next on the list is a similar LS3 built up by Crane to showcase their aftermarket cams.
LS3 x 3 – Comparing Three Performance Cams on the Engine Dyno - EngineLabs
Note the 500.9 HP version peaks at 6100 rpm with a peak torque of 488 at 4800 rpm.
More important to note the torque below 3000rpm, 238HP & 418ft/pds @3000.
This is where the SBC really shine folks...under 3000.
Alright who has a dyno sheet for an LS3 that tops that at similar HP, Im looking at you AP72.:thumbup: