power on stock bottom
Thread Starter
Instructor
Joined: Jun 2005
Posts: 165
Likes: 0
power on stock bottom
i would like to know whats the most power the stock bottom end can take. is there anyone out there with 500+ on the stock bottom and if so how long have you been making this kind of power on the stock bottom.
thanks
thanks
Burning Brakes
Joined: Apr 2005
Posts: 949
Likes: 1
From: Oakdale CT
I remember reading that someone was running 630rwhp on the stock bottom 
Im not sure how long it will last at those power levels though. I plan on running ~500rwhp on mine with the A&A procharger kit and dont foresee any problems.
Im not sure how long it will last at those power levels though. I plan on running ~500rwhp on mine with the A&A procharger kit and dont foresee any problems.
Drifting
Joined: May 2001
Posts: 1,770
Likes: 2
From: IL
There are many posts on this topic, just search for them. There is one right now in the Z06 area. Many guys are running mid 500's with no issues, some are well over 600. It's your car, whatever you are comfortable with!
Thread Starter
Instructor
Joined: Jun 2005
Posts: 165
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i am going to get a c5 not a z06. i know the z06 makes 500+ easily supercharged but i would like to know if the c5's can make 500+ on the stock bottom. i spoke to andy and he said i would make 450 with his p1 supercharger on the stock motor and 500 with headers but he does not suggest going higher than that with the stock bottom. i would think if would last at 500+ with a proper tune but i am new to corvette's. my last car was a turbocharged mazda which made 500 with a built motor and large turbo.
Melting Slicks
Joined: Aug 2003
Posts: 3,306
Likes: 5
These questions come up often. I'll tell you the honest true answer. Some people will blow their motor with 500rwhp, some will push 600rwhp and never have a problem. You never know until you try it. Every car is different. The tune is a big part of it. It all depends what you want to do. In my opinion, anything over 500rwhp is starting to get up there. The higher you go after that, the more of a chance your taking. If blowing your motor is not an option for you, don't push it past 500rwhp. I don't want to blow my motor, but I understand that its a possibility once you start going north of 500rwhp. I did 523rwhp with no problem.
Le Mans Master
Joined: Aug 2001
Posts: 7,064
Likes: 18
From: Arizona
Things possible to break when you have over 500 RWHP.
rings
rear separates from tranny (MN6/12 only)
input shafts
belts (superchargers only)
clutch (MN6/12 only)
The tranny can take the abuse.
Get a DTE tranny brace is you have a stick.
If you are boosted its only a matter of time before you will need pistons.
upgrade your 1/2 shafts to hardened steel.
rings
rear separates from tranny (MN6/12 only)
input shafts
belts (superchargers only)
clutch (MN6/12 only)
The tranny can take the abuse.
Get a DTE tranny brace is you have a stick.
If you are boosted its only a matter of time before you will need pistons.
upgrade your 1/2 shafts to hardened steel.
Drifting
Joined: Aug 2000
Posts: 1,698
Likes: 1
From: Chapin SC
Cruise-In II Veteran
Cruise-In III Veteran
I agree with BlackMagicC5 and ICULUKN-C5. The weak point in the stock bottom end are the rod bolts. Switching to ARP bolts is cheap insurance. I ran 470+rwhp N/A with a 125 nitrous shot on top of that for a full season with no issues but I was probably lucky.
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Melting Slicks
Joined: Mar 2002
Posts: 2,931
Likes: 2
From: Tx
I think I may have one of the most robust stock bottom end ls1 FI cars around. 2.5-3 years with the blower. About 2yrs at over 650RWHP. I used to beat on it hard just about every day, but I have only been driving it about once a week lately. I kept hearing everyone saying it was going to blow, so I had a shortblock built. Well, that shortblock is still all sealed up in my garage. The key is keeping detonation away. If you can do that, the stock stuff will hold tons of power.
The car is a little low and loud for a daily driver so I purchased an 05 gto and it has pretty much fulfilled my daily need for power. Although, the GTO still feels like a total dog after driving the vette for a day.
The car is a little low and loud for a daily driver so I purchased an 05 gto and it has pretty much fulfilled my daily need for power. Although, the GTO still feels like a total dog after driving the vette for a day.
Thread Starter
Instructor
Joined: Jun 2005
Posts: 165
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Originally Posted by QuickSilver2002
I think I may have one of the most robust stock bottom end ls1 FI cars around. 2.5-3 years with the blower. About 2yrs at over 650RWHP. I used to beat on it hard just about every day, but I have only been driving it about once a week lately. I kept hearing everyone saying it was going to blow, so I had a shortblock built. Well, that shortblock is still all sealed up in my garage. The key is keeping detonation away. If you can do that, the stock stuff will hold tons of power.
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Drifting
Joined: May 2001
Posts: 1,770
Likes: 2
From: IL
Quiksilver is the guy I point to most often when people say the stock Bottom is only good to 500 RWHP. He has taken amny measures to keep it safe, but point is he as at like 700 RWHP on a stock bottom end!
Melting Slicks
Joined: Aug 2003
Posts: 3,306
Likes: 5
Originally Posted by 3XBlack6spd
Quiksilver is the guy I point to most often when people say the stock Bottom is only good to 500 RWHP. He has taken amny measures to keep it safe, but point is he as at like 700 RWHP on a stock bottom end!
Melting Slicks
Joined: Aug 2003
Posts: 3,306
Likes: 5
Originally Posted by DAWGTUFF
i will probably push my motor to about 550rwhp on the stock block. i will need that much to keep those turbo honda's behind me. do you guys use anything for knock control like j&S? whats you setup quicksilver? i was going to get andy's supercharger kit but i think i may hold out to see what the new kenne bell kit will do. thanks for all the helpful replies.
Melting Slicks
Joined: Feb 2002
Posts: 2,285
Likes: 2
From: Crooks SD
Originally Posted by BlackMagicC5
Tune is key.
I believe rob raymer did well over 700rwhp on a 140000 mile LS1. This was with high oct race fuel and many, many dyno's to make it right. With that said, it did let go at some point.
Melting Slicks
Joined: Mar 2002
Posts: 2,931
Likes: 2
From: Tx
Originally Posted by BlackMagicC5
Anything is possible. I say 500rwhp is a general rule of thumb for when things are starting to get into the "you never know" area. 700rwhp on stock bottom end is very impressive, but is it the norm? Absolutely not. I wouldn't push it that far unless your expecting it to pop, and your ok with that. It cracks me up when people say "hey, look at that guy, he did 700rwhp on stock bottom end, it can handle it", then someone tries that and blows up around 600rwhp and wonder what went wrong. Like I said, some people will do 650rwhp all day without ever having a problem, and some people will blow theirs at 500rwhp. Tune is key.
I ran across a small article the other day in hot rod (9 second hunk of junk) where a guy was able to run 9s on a cast bottom end. He took a stock 500ci Cadillac bottom end and added a 250 shot of n20 and pushed an 88 mustang into the 9s.
Pro
Joined: Oct 2003
Posts: 576
Likes: 0
From: Grove City Ohio
I'll be picking up my Z sometime this week from Dynotech. It's making 675/555 at the wheels. We'll see how it holds up. As the others have said, the tune is the thing... As you can see from my chart, it lost fuel pressure above 6K. They're installing a '97-'98 return flow fuel system on it now.
Melting Slicks
Joined: Mar 2002
Posts: 2,931
Likes: 2
From: Tx
Originally Posted by Z06 Tom
I'll be picking up my Z sometime this week from Dynotech. It's making 675/555 at the wheels. We'll see how it holds up. As the others have said, the tune is the thing... As you can see from my chart, it lost fuel pressure above 6K. They're installing a '97-'98 return flow fuel system on it now.
How much boost is that TOM? The dyno looks exacly like mine when I was at 9.5-10psi.
Drifting
Joined: May 2001
Posts: 1,770
Likes: 2
From: IL
Originally Posted by Z06 Tom
I'll be picking up my Z sometime this week from Dynotech. It's making 675/555 at the wheels. We'll see how it holds up. As the others have said, the tune is the thing... As you can see from my chart, it lost fuel pressure above 6K. They're installing a '97-'98 return flow fuel system on it now.
