A few questions for guys that have forged internals

[baddogz28]

Approximately how much did it cost?

Any brands of components more durable or better for spray?

How long was the install time?

Thanks for the help.:thumbsup:

[gettinthere]

How big of a shot are you going to run? I'll be doing a 200 shot direct port on stock bottom end.

[baddogz28]

Probably a wet 200.

[gettinthere]

You should be okay, but give Tony at Outlaw a call. He can give you some options.

[LiquidFire350]

How big of a shot are you going to run? I'll be doing a 200 shot direct port on stock bottom end.
really, ive heard the most you want to go on the stock bottom is 125

[gettinthere]

really, ive heard the most you want to go on the stock bottom is 125


Tony sprayed 250 on the SBE. If mine blows, it blows. I'm not too worried about it.

[Raven02Ta]

really, ive heard the most you want to go on the stock bottom is 125

i have been spraying a 200 shot on my stock bottom end for a while but it will evenetually blow especially when pushing over 600 hp.....

anyway im pretty partial to mahle forged pistons. just had the motor re-done with them and they seem to be holding just fine. i pput in a fresh set of stock rods so im not planning on those holding up for very long.

[baddogz28]

What did the Mahles run you?

[revolutionary]

I've put the Mahles in a couple customers' engines and they do very well. I would still recommend only using up to a 200 wet shot unless you change over to a 2618 alloy piston designed specifically for a lot of nitrous.

[NBM2001z28]

Tony sprayed 250 on the SBE. If mine blows, it blows. I'm not too worried about it.
Don't forget to ask tony why it blew up on the second pass too :D

[AF1Bird]

What do you guys think about Manley pistons for a boosted application?

[Moparnos (The SLP Guy)]

how much are you planning to boost?

[Tim99ws6]

I'm running Mahle pistons, Crower Rods, and ARP rod bolts.

[bichinblackws6]

Any decent-quality, forged rotating assembly components would be suitable for use with nitrous.

I'm running an Eagle 4340 forged stroker crank, forged Callies Compstar H-Beam rods, and forged Diamond racing pistons. I wanted an all Lunati forged rotating assembly, but when I priced one, I puked on my shoes. The components I listed above are of good quality, and cost me ~$1,600.00. The Lunati would have cost me $3,800.00. For me, it was a no-brainer.

I'm not a fan of power adders, so I won't be running nitrous.

There's no question that the stock LS1 bottom end (especially the '01 & '02) can handle in excess of 500 HP. But HP isn't the issue when running a monster shot of nitrous on a stock engine. The OEM eutectic pistons are the problem. Regular, hardcore use of nitrous is hard on eutectic pistons. They tend to become embrittled and "work-hardened", and it's not a rare sight to see an OEM eutectic piston with a hole blown through the top of it. Eutectic pistons do not handle detonation well at all.

I am not an expert when it comes to nitrous oxide; all I know, is what I read in tech manuals, and have seen in real life. The current, conventional wisdom says that if you want to run monster shots of nitrous, it's best to spend the bucks, and construct a purpose-built nitrous engine.

This is just my opinion, so take it with a huge grain of salt...I wouldn't run anything more than a 100-shot on a stock LS1 engine. Yes, I know, everyone knows someone who's running a 200 wet-shot on a stock engine, and has never had a problem. All I can say to that is, lucky.

I would at least replace the OEM pistons with a set off good, high-quality, forged aftermarket pistons. Because of the unique wrist pin arrangement on the OEM piston/rod set-up, I honestly couldn't tell you if you can use a stock rod (which, aside from the bolts, are PLENTY strong) forged piston combo.

As far as installation time goes, I'll let you know next week. We put my stroker together this coming Saturday.

[LiquidFire350]

There's no question that the stock LS1 bottom end (especially the '01 & '02) can handle in excess of 500 HP.
huh? last i checked, 98-02 ran the same bottom end

[bichinblackws6]

huh? last i checked, 98-02 ran the same bottom end

Rod bolt design changed to a stronger bolt in '01, if I'm not mistaken. Block casting design for rear oil passage was also changed in '99 or '00 (although this isn't considered a bottom end thing, it did greatly improve engine oil management) from a few milled holes above the cam bore, to a large cavity cast into the block above the cam bore. The '97 (yeah, I know, it didn't make it into the F-Bodies that year) & '98 are generally considered to be the least desirable LS1 blocks for hi-performance builds. The casting number to avoid ('97 & '98) is 12550592. LS1's that received design improvements had casting number 12561168.

[Grims]

This is just my opinion, so take it with a huge grain of salt...I wouldn't run anything more than a 100-shot on a stock LS1 engine. Yes, I know, everyone knows someone who's running a 200 wet-shot on a stock engine, and has never had a problem. All I can say to that is, lucky.




A 100 shot? I have an LT1, so unless LT1s can take more nitrous for some reason I think you could safley run at least a 150. My LT1 has almost a 150k miles on it and I have spraye don it a couple dozen times with a 150 shot.

[bichinblackws6]

A 100 shot? I have an LT1, so unless LT1s can take more nitrous for some reason I think you could safley run at least a 150. My LT1 has almost a 150k miles on it and I have spraye don it a couple dozen times with a 150 shot.

Like I said, it's just my opinion....not a statement of fact. If it were my car, I wouldn't do it. That is all I'm saying. The reasons I wouldn't, are in my post. My reasons do not make me an expert, but they are what I consider when making decisions about my car.

Since this thread is NOT about my car, it doesn't really matter. The guy can spray however much he wants, as often as he likes, on any engine set-up he feels like building. It's up to him. He asked a question, and I answered based upon what I would do if it WERE my car. He can do whatever he pleases with his car. When he does decide what's right for his car, I wish him all the luck in the world, and hope things turn out the way he planned things to turn out.