440 HP Estimate

Offset grinding moves the center of the journal over a certain amount. Ho much depends on bearing choice and condition of the outside of the existing journal. If they are decent (most used ones have some sort of grooving and taper) then you can move the cenerline by about .030" or so when specing a .030 under bearing. Normal journal refinishing means removing 1/2 the undersize from the entire journal. So .010 under removes .005" from each "side". Offset grinding means the "side" away from the main journals has little or none removed, and the "inside" surface closets to the mains loses all the material. Thus moving the centerline of the new journal "out" buy that amount. That increases the strok by twice that amount, because the piston will go "stock plus .030" on the up and the down stroke. so a .030 offset grind on a perfect journal to start will run a .030 under bearing, and increase the 3.75 stroke to 3.81. As a side bonus, the existing pistons are now effectively .030 taller in the block. So you et more stroke (and torque) and more compression (and torque) from one expense. I do recommend even in budget rerings to turn and polish the crank. You can get by with poor ring seal, you cant get by with poor oil filming. It cists me about twice the money as a typical "turn and polish" job to offest grind and index a factory crank.

Demon, I'm always trying to think positive...lol. As I said, I've had as much fun with $300 re-rings as I have with $6K full engines...lol. Currently, in my own car, I have a "free to a good home" 350hp shortblock and a set of 516s I ported and a friend did a stone valve grind on. Total with a new Holley carb is about $1500 complete air cleaner to pan with headers. It traps at 6400 and has run 113 in my '70 Cuda with 3.91s.

I think the offset grinding might be a cool deal. But also keep in mind, by changing stroke, you change the balance too. If this is absolute budget, buy a crank kit with bearings and stick it in. That's the cheapest way out. Should be less than $300 for it that way.

Edit OT: sorry for typos..I'm breaking in contact lenses for the first time..I didnt re-read things...lol.