340 stroker build questions
Plan the whole motor NOW. Why wait?
Stock caps, new capbolts, forged MP crank and your parts listed will be bullet proof in a 425 HP motor. Not bullet proof in a 600 HP. And ticking time bomb in a 700 HP motor.
Then buy the appropriate parts to match you goal. Otherwise you have a discontinuous curvy path to an another wise straightforward destination.
475 to 500 HP is going to come from a good heads and probably with mild cleanup and something cam wise in the range of a XR280HR-10 or XR286HR-10
. Not recommending those cams, but just a starting/launching point for other brands or custom grinds.
-20 cc deck will be about 9.9/10.0 to 1 compression with the smaller "63cc" head (measures 65cc) with a 340 block. My stroker motor has the Icon -21cc pistons that give me a measured 9.8:1 compression with 0.20-.25 quench with a 0.030 over 340 block. I can run 91 octane Arco gas without pinging under heavy load hot day and 32 degrees total advance. More advance and it will ping.
Plan the whole motor NOW. Why wait?
Stock caps, new capbolts, forged MP crank and your parts listed will be bullet proof in a 425 HP motor. Not bullet proof in a 600 HP. And ticking time bomb in a 700 HP motor.
Then buy the appropriate parts to match you goal. Otherwise you have a discontinuous curvy path to an another wise straightforward destination.
475 to 500 HP is going to come from a good heads and probably with mild cleanup and something cam wise in the range of a XR280HR-10 or XR286HR-10
. Not recommending those cams, but just a starting/launching point for other brands or custom grinds.
-20 cc deck will be about 9.9/10.0 to 1 compression with the smaller "63cc" head (measures 65cc) with a 340 block. My stroker motor has the Icon -21cc pistons that give me a measured 9.8:1 compression with 0.20-.25 quench with a 0.030 over 340 block. I can run 91 octane Arco gas without pinging under heavy load hot day and 32 degrees total advance. More advance and it will ping.
