Highest hp on 427?

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Old Nov 30, 2009 | 08:21 AM
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Default Highest hp on 427?

Ok, my dad talked to some guy at his neighbor's house this weekend with a vette not sure if it was c5 or c6. But anyway it's got a n/a 427 that he claims to have 900 hp. It's a black vette with black wheels and was shop built. Has lots 2 nitrous bottles in the back and 2 quart container under the hood with race gas in it. So he's running on pump gas and still has a/c and such. Is this even possible? I say maybe with a big shot, but not just straight motor.
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Old Nov 30, 2009 | 08:49 AM
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SAM( School of Automotive Machinist) built a 1000hp na LS motor for their race car. So yes its possible to make that kind of power but I doubt the vette in question is making that number without the bottle. Maybe there was a misunderstanding in the conversation? 900HP with the bottle is not that hard to accomplish.
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Old Nov 30, 2009 | 09:06 AM
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I believe SAM is using a larger CID engine. This was also on an engine dyno if I remember correctly.

I am going to call BS on this one.
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Old Nov 30, 2009 | 09:08 AM
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Originally Posted by Juicy J
I believe SAM is using a larger CID engine. This was also on an engine dyno if I remember correctly.

I am going to call BS on this one.
You are correct on both accounts.
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Old Nov 30, 2009 | 09:14 AM
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427ci (N/A) = (MAX) 600 rwhp ish... H/C and full bolt on's with ported fast 102 tb/intake.

Power adders are another story...

Last edited by BADZ; Nov 30, 2009 at 04:04 PM. Reason: Forgot to add this in my post!!
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Old Nov 30, 2009 | 10:13 AM
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900 all motor on a 427 is pretty hard to do if not impossible. Some other factors need to be cleared up.

900 on a 427 with any power adder is pretty easy, well not easy, but a little money and it's done quite easily....
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Old Nov 30, 2009 | 11:03 AM
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I can see it making that power on the bottle. ~600 on motor and ~300 with a dedicated fuel system and a ~300 shot isn't hard to believe. I have a buddy that had a Z28 and a 383 with a Nitro Daves dedicated fuel system with direct port that was putting out pretty good power.
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Old Nov 30, 2009 | 11:22 AM
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the 2008 set up for our '99 Camaro was a 427ci C5R, it was making around 940HP N/A to the flywheel. The new set up for 2009 has a 433ci LSX block w/ C5R Heads and we made 1001HP N/A to the flywheel. Its possible to do, but not streetable what so ever.
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Old Nov 30, 2009 | 03:58 PM
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900 n/a is possible but not streetable out of a 427. If he has 900 hp on the gas that is very easy.But I doubt he can use it.Thats a lot of power for a 3200 lb. car.Trust me.
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Old Nov 30, 2009 | 04:13 PM
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Hey y'all thanks for the help. This guy is wanting to drive this car to the Texas Mile, which is a good drive from here, so it is streetable. Also on the track he said it went 11.1 with a 2.5 60', which I wasn't really impressed with. So yeah I think my dad heard wrong I think it's 900 on the bottle. Or he was just running his mouth and thought no one would know better.
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Old Nov 30, 2009 | 06:51 PM
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Originally Posted by Cowboy97
Hey y'all thanks for the help. This guy is wanting to drive this car to the Texas Mile, which is a good drive from here, so it is streetable. Also on the track he said it went 11.1 with a 2.5 60', which I wasn't really impressed with. So yeah I think my dad heard wrong I think it's 900 on the bottle. Or he was just running his mouth and thought no one would know better.
it may not be a drag racing car. 11.1 with a shitty 60' means he may have a pretty good ET speed. what was the ET speed?

900hp with a 427 is possible. It all depends on how much money this guy spent. are you sure maybe this car wasnt boosted? There are a lot of Z06's with forcedinduction out there with well over 800hp.
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Old Nov 30, 2009 | 11:46 PM
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I have seen builds with a C6 ZO6 that make a bit over 750 FWHP with cam, tune and headers, you can imagine where you can go with more everything.
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Old Dec 1, 2009 | 02:07 AM
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Originally Posted by Cowboy97
Ok, my dad talked to some guy at his neighbor's house this weekend with a vette not sure if it was c5 or c6. But anyway it's got a n/a 427 that he claims to have 900 hp. It's a black vette with black wheels and was shop built. Has lots 2 nitrous bottles in the back and 2 quart container under the hood with race gas in it. So he's running on pump gas and still has a/c and such. Is this even possible? I say maybe with a big shot, but not just straight motor.
seems a little too he said/she said to take seriously. besides the ratio of *** hats that say they have big hp to the people who actualy make big hp is greatly lop sided.
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Old Dec 1, 2009 | 03:34 AM
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that sounds like lil powels setup.
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Old Dec 1, 2009 | 03:01 PM
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Yeah the car had a high trap speed, don't remember exactly. There was for sure no boost on the car of any kind. Mostly I was just asking if 900 hp was possible on a streetable car. I don't keep up with the big motors since that's way out of my price league anyhow. Most of the n/a cars I found that were streetable were in the 600 range.

Carfax i believe it is Powell's car, you know him?
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Old Dec 1, 2009 | 11:00 PM
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yeah his car made 856 hp on the shot with his old heads. he got new heads and i dunno about the hp now.
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Old Dec 2, 2009 | 07:53 AM
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Where the hell has Matt been anyways? I don't even see him at the gym anymore?? I'd like to see this new 900hp creation. MATT.... Where ya at? LOL
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Old Dec 2, 2009 | 05:01 PM
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Originally Posted by niceguyyy01
Where the hell has Matt been anyways? I don't even see him at the gym anymore?? I'd like to see this new 900hp creation. MATT.... Where ya at? LOL
Lol whats up, I moved to pearland so in the move I moved gyms. Im at LA fitness off 518, The vette is good but forsale
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Old Dec 2, 2009 | 06:48 PM
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Originally Posted by NVR4GET
Lol whats up, I moved to pearland so in the move I moved gyms. Im at LA fitness off 518, The vette is good but forsale
for real for real for sale? damn what you getting now?
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Old Dec 2, 2009 | 08:38 PM
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Originally Posted by NVR4GET
Lol whats up, I moved to pearland so in the move I moved gyms. Im at LA fitness off 518, The vette is good but forsale
Thats good to hear. I take it you guys that the house you bid on? Glad to hear your keeping with the gym. Sorry to see you selling your ride.... wish I could afford one of those damn vettes. LOL.
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