I sold my 540 short block for twice what I paid for it and I love a beast of a motor but I have a thing for a big block that can turn 10 grand in therory I have a 4 bolt main 454 which I'm buying milan main caps for a using a 427 forged steel crank now he's the set up with kb dome forged pistons 4.310 x 3.760 x 6.385 x X 10.6:1 w/119cc heads I'm planning on turning 8500 on a shift point heads are 335s and going two stage nitrous or a 76 mm remote turbo t56 that's been beefed up with a 4th rear end with a posi 4.11s over kill or a corvette killer ? If any body sees a probl with this set up please lot me know

 

Like I already said in your double post.

Go for it and let us know how it turns out

 

I just droped off my 427 to the machine shop saturday, running 6223 crank having rods reconditioned -16.8 dome speed pro pistons, 4290 102cc heads off a chevelle oval port closed chamber heads, revalved with larger size, comp cam mild advertised as 6000 max rpm, dont pla on going past 5500 should i spend the extra 500$and get rotation balanced? the crank was turned -.010

 

You probly have the anser to my question.Removing sb 327 from 1966 impala ss will my 427 bb drop right in the same mounts?

 

Whenever aftermarket parts are used, it should always be balanced. Unless the pistons, pins, rods and rings are the exact same weight as what came off, the balance will be different.

My last balance required a lot of metal to be removed from the crank. Took my balancer a day to get it balanced right down to zero on the planes. Still cost me $800. How much it costs depends on what work needs to be done.

 

$500.00-$800.00 to balance an engine is insane unless heavy metal needs to be installed.

You can balance pistons yourself with a gram scale, I used one at a friends body shop, weigh the pistons & mark each one's weight, then just make the 7 heavier pistons weigh the same as the lightest, its that simple. Anything within 1 gram is better than most shops will do.

Then take your parts to your favorite machine shop, shouldn't cost more than about $250.00, at least thats what it is around Sacranento CA.