[stoneyone2001]

I am looking for a little advice from someone who knows more than me. Will a crank from a 454 work in my 402 with out to many problems or machine work? If anyone out there knows can you please let me know! THANKS

[BOBCRMAN@aol.com]

you can put a 454 crank in a 396-402 block, but you can't buy resonably priced pistons for the combination! also you will have to grind the block for rod clearance, it's even getting hard to buy off the shelf forged hi-perf pistons for 396-427 stock rod motors, most of the piston companies are just producing the 454 pistons and telling the few that run 427 style motors to use a .250 longer rod and 454 pistons.

[Super Streeter]

Actually a 427 with a .250" longer rod would use the same size piston as a 4.25" stroker combo with a stock rod.That is how I built my 440 incher.4.310x3.76 with 6.385" rods and pistons for a 496 stroker.You might be able to have a set of custom flat tops made for a fair price,but domes will be expensive.I ordred a set of weisco custom pistons for a 555 a while back and they retailed for $900 but they will sell them to you for about $600 if you call them direct and tell them your story.Good luck.

[BOBCRMAN@aol.com]

But you were using a 4.250+ oversize bore, most 402's won't go that big without cylinder wall problems, the man is looking for 4.125 bore pistons ,long rod , 4.25 stroke, AINT ANY= non available=unless custom ordered.

[Super Streeter]

He might be able to do something with a 400 smallblock piston especially if he wants a flat top.He needs to figure out the deck height he needs,maybe figure out a few differnt combo with different length rods and then comb the piston catalogs for a piston that will be close to what he needs,he may have to make up the last few thousandths by decking the piston or block,or offset grinding the crank,but it may be doable without a lot of trick stuff.A stock 454 piston needs to be about 1.665" in deck height,with a stock rod,and as short as 1.265" with a .400"longer rod,and there is a .250"longer rod in between the two.You can deck the block up to about .060" to get the piston to the top of the deck,and many pistons can be milled a similar amount to bring them back into the deck if they are to high,and then you can even buy head gaskets as thick as .080" thick if a milled piston is still too high.So in reality you can take a piston that is as much as .125" too tall and still make it work if you needed to,if you were willing to mill the piston a bit and run extra thick head gaskets.So if you were really pressed to make it work,a 396 flat top piston such as a trw replacement piston which normally sits .020" in the deck could be milled .060",and run with .080" thick head gaskets and be close to fitting.Another slick trick you can pull would be to ask the machine shop to oversize the rds about .060" shorter by milling the heck out of the caps and offsetting the holes in the rods.If you know a good machinist you can bogger something up on the lowbuck,or you culd just get a 454 block and be done with it.Back before everybody and their brother made stroker pistons this is how it was done.

[Ohio-Dan]

You could use a KB361 with the stock rods and a 454 crank in a 396 block. That's what the application is for. If the Hypereutectic isn't enough, and you need a forged piston, you might look into a custom rod length and an off the shelf piston. Or, I'm afraid you are looking at a custom forged piston. Dan