Thats not true, we've seen ringlands crack and bearings spin on just a 100 shot. N2o is the hardest on an engine, harder than FI is and the factory built engine isn't the most consistent engine on the planet. Some have piston slap some don't, some make as much as 15 more hp than others. Add n2o to that combination and all bets are off as far as I'm concerned.

Properly built forged bottom end is a different story.

 

no nos
is that that hard to figure ?
I'm not racing
I want a durable road engine

 

Ok, roadcourse... you should say so but if you are trying to make as much HP as possible poweradders are needed.

 

Well some guys run 9's on stock differentials too, that doesn't mean everyone can do it. Also some people maintain their engines properly instead of changing the oil every 3-12k miles. I am saying I know about 10 guys in MS which means Mississippi OP that have 1xx,xxx mile engines and they have been hosing the hell out of them since they got them 40 or 50k miles ago. Most of them are stock LS1's(camaro/trans am's) and a few are vettes but I am yet to personally see a LS engine take a **** from nitrous.

 

Yep there are those who don't have trouble and then there are those who do with 62k miles on their car. We've also seen threads where non modded engines have spun bearings through no fault of the owner.

Just because you personally haven't seen issue doesn't mean others have had that luck. I know of someone in your area thats gone through 3 stock short blocks so far instead of building a proper forged bottom end. He gets them cheap,. breaks them and gets another one. I get a call about once a every 3 months from him looking to see if I have a short in stock.

I also get a call about once a week from someone who toasted their motor with nitrous.

Seriously you should do some research and see all the carnage. Spun bearings and thrown rods are common with nitrous usage and a stock LS1 engine and it's not because of the rod bolts. The materials are different between bearing and block and nitrous exposes that issue. One expands quicker than the other.

But since the OP has stated time and time again he does not want to use N2o I'm not sure why you keep hounding on it. Its not for everyone and is useless unless your racing.
You gain so much more with an increase in cubic inches.

You like n2o nothing wrong with that but its not for everyone. I try and respect peoples wishes and deliver what they want, not what I want or someone else wants for them.

If you want to debate with me go ahead and pm me so this thread stays appropriate for the OP. We build some of the nastiest n2o engines on the planet, but talking about it in a thread where the OP said no thank you is inappropriate IMO.

 

We have many option here. You can go 383 with your current block and make between 450 and 525. It all comes down to how much power you really looking to make.

We need to know application and we can design it from there.

 

wrong again
ROAD

your interest is misguided and not needed
you really have nothing to add

 

I just want the the most that you can get with a stock exhaust and smog legal

At some point I thought that stock exhaust would cause a "choke point"

 

maybe he has his plumbed so he can inhale it

 

Here you go. Run the L76 intake, LS7 exhaust manifolds, small cam and enjoy.

http://forums.corvetteforum.com/c5-t...6hp-427-a.html

 

i TOO WANT TO RETAIN STOCK EXHAUST AND SMOG LEGAL AT THIS TIME WOULD LIKE TO DO CAM ZAND VALVE SPRINGS FOR THIS APPLICATION AND NECESSARY PARTS THAT ARE NEEDED (PUSHRODS ROCKERS???) IT'S 03 Z/06 W/4.11 AND VARIRAM MY PLAN IS DO THIS MOD AND NEXT YEAR DO THE MOTOR OVER AND EXHAUST (HEADERS) AND AFTERMARKET HEADS AND CAM FOR THAT APPLICATION.DOING WORK MYSELF WILL BUY PARTS FROM YOU NEED HELP SELECTING PARTS CAR RUNS 116 MPH NOW 11.90-12.00 WANT TO RUN 11.50 SO I CAN RUN 11.50 INDEX CLASS NEW TIRES EXPECT TO P.U. A TENTH...WILLL A CAM GET ME THERE?YOUR OPINION MY APOLIGIES TO THE OP FOR JUMPING ON HIS THREAD BUT HIS QUESTION WAS SO SIMILAR TO MINE HE MIGHT BE INTERESTEF IN THIS MOD AS AN OPTION

 

Well you've got a true dual 2.5 inch exhaust system and it flows good.

It will be a choking point but not a cut off point.

You can still make power with it but not as much as you would if you changed it.

And to be honest more cubic inches is really the only way to make more power with that as a restriction IMO

We could do a 427 as well in that budget range as well.

K ripper the caps lock is bugging my eyes out..LOL but I'll send you a pm Thank you

 

OP,
Are you completely against changing the exhaust or just don't want to deal with smog issues of long tubes? Shorties provide smaller gains and are smog legal. I am not sure about the cat back, but you could probably get a good deal on a Z06 titanium exhaust for a little more flow.

 

I already have the Ti cat back.
Smog is the primary concern and shortys just are not worth it bang for the buck wise.
I consider better flowing GM exhaust components though.
Another issue is I just don't want it noticeable when you pop the hood.

I'm probably 6-8 months away from doing this.
Longer if planning takes longer.
I have the cash.
I intend to plan it out so I have everything before I pull anything apart.
No surprises.
Once I settle on the engine output I'll match the rest of the drive-train up.
I want bullet proof reliability.

 

Now that is what I'm looking for.
More than $10k but ......

 

Well we give you more cubic inches for that money but we can do a 427 for you within your budget

The little brother to our 457 cid (445 cid) ran 9.4 in a 3300 lb car on 91 octane pump gas.