Looking for inputs on the pistons and rods that I am planning to get for my build. I also plan to have the rotating assembly balanced.

Wiseco K444x3903 pistons:
- 2618 alloy
- dish -11 cc (60cc heads .04 gasket. Shooting for 10:1 for future 8-10 psi)
- 1.300" compression height
- 3.903 bore
- 3.622 stroke
- .927 pin
- 6.125 rod length

K1 012AE25613 rods.
- 6.125 length
- 4340 alloy
- .927 pin
- 2.100 rod diameter

 

Sounds like a recipe for a boosted application and there's nothing wrong with your parts selection. I would look into the TSP Super I-beams, a better block and a good forged crank if planning to boost.

 

You don't need a forged crank for boost. The stock crank is good for 900 HP. Unless you plan to push over 1000 HP. Stock blocks are also good for similar power.

 

Well if it was my turbo engine it would be forged but to each his own so carry on!

 

Magnuson 2300, not turbo, if that makes any difference.

 

Even more of a reason to go with a forged crank!

 

Plenty of people have run more than 8-10 psi with blowers on stock cranks without issue. I ran 15 psi with s procharger and nothing was wrong with that short block when I pulled it.

 

From my research, you are backward on your argument. The stock LS1 crank can handle more than the stock LS1 block.

 

A blower puts much difference force on the crank than N/A, turbo, or nitrous.

 

Without a doubt, but with only 10 psi he may only be 650 rwhp. The real question is he actually going to limit himself to 10 psi lol.

 

This.

 

It’s 10 psi guys lol How many blower setups have had crank issues at 10 psi out of the thousands of blown ls sbe’s?

 

What PSI can a balanced LS1 crank and 3.903" bore block handle

 

The crank doesn't know PSI lol. I wouldn't sweat it as long as you're not going crazy with the power, but that 2650 will make quite a bit of lowend torque that is going to stress the bottom end. It's not a centrifugal where power/boost is linear.

 

Holy crap why are we using a 2650 for 10 psi on a 347?

 

2300 not 2650

 

26...23.....whatever It's still going to make obnoxious lowend torque.

 

that is why I will have 345/40r17 DRs :-)

 

I'd be more concerned about making it fit an fbody than I would be the stock crank at that power level. Of course assuming you actually limit it to 10 psi.

 

Just saying that your adding additional stress to a cast crank that wasn't designed for that but carry on!