Which nitrous pistons?

[Z28Zac]

It's time to order some some pistons. Building a 355 with stock crank, forged eagle I beam rods (5.7), and forged pistons. But which pistons is the question. The plan is to spray a 150 shot (for now) with the direct port wet kit I currently have. After doing a LOT of reading I was set on forged SRP professional pistons, but I'm not sure if they are the best for nitrous. Also looked into Wiesco and Ross as well. All are relatively close in price so just trying figure out which ones to go with. Any advice would be greatly appreciated.

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[SSlowBoat]

It's time to order some some pistons. Building a 355 with stock crank, forged eagle I beam rods (5.7), and forged pistons. But which pistons is the question. The plan is to spray a 150 shot (for now) with the direct port wet kit I currently have. After doing a LOT of reading I was set on forged SRP professional pistons, but I'm not sure if they are the best for nitrous. Also looked into Wiesco and Ross as well. All are relatively close in price so just trying figure out which ones to go with. Any advice would be greatly appreciated.

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do you already have 5.7 rods? if not go 6.0 rod, itll make a little more power and be a little better off in long run. i dont run spray, so i cant say on pistons, but wiseco pistons for boosted apps are niiiiiiiice

[Injuneer]

You don't want to push the wrist pin too high on a nitrous piston. Typically, they drop the ring pack down on a nitrous piston, to avoid the intense combustion temperatures and to strengthen the piston crown above the top ring, the wrist pin is into the oil ring. You can add ring rails - I have them with 5.85" rods on a 3.75" stroke - but why press the issue. I'd stay with a 5.85" rod. I run BME 2618-T61 pistons, but you don't need or want those for a 150-shot, mostly street-driven application. 4032 is a decent choice, and Wiseco or Mahle are good.

[Z28Zac]

do you already have 5.7 rods? if not go 6.0 rod, itll make a little more power and be a little better off in long run. i dont run spray, so i cant say on pistons, but wiseco pistons for boosted apps are niiiiiiiice

I've read some good stuff about the wiseco's... they are ones to consider for sure.

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[Z28Zac]

You don't want to push the wrist pin too high on a nitrous piston. Typically, they drop the ring pack down on a nitrous piston, to avoid the intense combustion temperatures and to strengthen the piston crown above the top ring, the wrist pin is into the oil ring. You can add ring rails - I have them with 5.85" rods on a 3.75" stroke - but why press the issue. I'd stay with a 5.85" rod. I run BME 2618-T61 pistons, but you don't need or want those for a 150-shot, mostly street-driven application. 4032 is a decent choice, and Wiseco or Mahle are good.

Haven't looked into Mahle yet, I'll check them out. Great information, thank you!

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[TravisMcGill2000]

I'm running cp bullet pistons. There nice off shelf piston. I'm running 6in rods in my 355 as well.

[Z28Zac]

I'm running cp bullet pistons. There nice off shelf piston. I'm running 6in rods in my 355 as well.

Ill have to check those out. Are you spraying those?

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[Z28Zac]

I'm running cp bullet pistons. There nice off shelf piston. I'm running 6in rods in my 355 as well.

And also would you happen to have a part number for those? Found them for a 4.030 bore and 6 inch rods but it's for a 3.500 crank instead of a 3.480 crank.

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[TravisMcGill2000]

I'm running the one for 3.5 stroke. Yes spraying them with 200 so far.

[Z28Zac]

Awesome, so they work with a 6in rod and 3.480 crank?

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