Joined: Nov 2016
Actually, the increased leverage from the longer stroke creates a lot of extra torque. A 302 typically delivers about 15 lb-ft more torque than a 289. So long as you're not hitting excessive piston speed, increasing stroke is a great way to lower the RPM of your car's powerband, and deliver more torque. Horsepower is typically limited by the heads and cam, but of course, any part of the setup can be a bottleneck.
In practical terms, a 289 and 302 with the same heads, intake, cam, and exhaust will probably make exactly the same peak horsepower. You *might* notice the difference between the two if you drove them side by side, but probably not. The 302's average power (because of the torque improvement) would be slightly higher. The 289 would be able to stay in a given gear longer, and be a little more willing to rev.
I smile a lot. It makes people wonder what I'm up to...
Last edited by Grimbrand; 09-04-2019 at 01:03 AM.