Jdbstroker
New User
Hello everybody, this is my first day on the site, and posted this in the wrong forum earlier. Hoping for some info
So I recently bought a 1938 Jd b. It has a 5-1 Powerblock with 5.125 bore, but has been stroked 7.5 inches. And the head has been ground down and A valves have been put in. Has an A carb on it, a Heisler exhaust manifold, and an electric fan. I was just curious as to what you guys were thinking it had for horsepower. We've done the math and its at 309 cubic inches. Unfortunately we don't have a dyno around here to test it on. I m thinking 50ish? Or so. My brother has a 41 B with a power block. That's been bored with stock stroke. And its at 37hp. Which we could dyno at the time. Thanks guys! Love the forum!
So I recently bought a 1938 Jd b. It has a 5-1 Powerblock with 5.125 bore, but has been stroked 7.5 inches. And the head has been ground down and A valves have been put in. Has an A carb on it, a Heisler exhaust manifold, and an electric fan. I was just curious as to what you guys were thinking it had for horsepower. We've done the math and its at 309 cubic inches. Unfortunately we don't have a dyno around here to test it on. I m thinking 50ish? Or so. My brother has a 41 B with a power block. That's been bored with stock stroke. And its at 37hp. Which we could dyno at the time. Thanks guys! Love the forum!
