Going from 9.5 to 9.1 Compression 408 Magnum

Your welcome and I missed you when you joined so a belated “WELCOME ABOARD” to you.

Balance? It can be tricky. What the factory did and what you have could be two different things. Engine history is the first leg of homework.

The history will be the hardest part of this puzzle. I am the third owner as of yesterday. The original owner had it built for a late 90s Dakota. He ended up parting the Dakota out due to a rusted out roof after putting "15K miles on it". Purchased for a Duster project that ended up changing direction to a 340. The guy I purchased it from said he heard the motor run and helped pull it. I felt good about the purchase, the seller was very forthcoming and accommodating allowing me to pull and inspect main and rod bearings.

The kit is a Eagle Forged crank and rods. It appears there had been some light grinding done to the crank and rods. Doesn't look like any mallory was added to the crank but there are places metal was removed. The damper is a pro/street unit but can't tell if it has the weight bolted to the back of the damper as its still on the motor. Also the flex plate didn't have any weight on it.

This will be a learning process for me. I plan on pulling everything down, giving it a good cleaning and checking clearances then reassembly. Might take the block to the machine shop to get it honed for Moly Rings......gotta spend more time on here reading before decisions are made.

Excited to get it going though!