400 rwhp w/ no headers or heads.......is it possible

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10-16-2002, 03:09 AM

BillyBz28

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400 rwhp w/ no headers or heads.......is it possible

just curious as to if anyone has ever made 400 or close to 400 rwhp without the aid of headers or heads.
thanks
b

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10-16-2002, 08:33 AM

JackZ28

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Re: 400 rwhp w/ no headers or heads.......is it possible

Yes, with nitrous or a 'charger, or maybe even a turbo. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

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10-16-2002, 02:23 PM

DONAIMIAN

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Re: 400 rwhp w/ no headers or heads.......is it possible

yea, with almost every bolt-on you can get your hands on

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10-16-2002, 03:09 PM

jmX

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Re: 400 rwhp w/ no headers or heads.......is it possible

<blockquote>quote:<hr />Originally posted by stang killer:
yea, with almost every bolt-on you can get your hands on<hr /></blockquote>If you consider nitrous or a blower a bolt on, sure.

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10-16-2002, 09:29 PM

Richard@WCCH

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Re: 400 rwhp w/ no headers or heads.......is it possible

Just to give some perspective........this will make you cry........ an NHRA legal Stock class racer is making 520+fwhp. They are allowed headers, but no head mods. NHRA cc's intake and exhaust ports at 210cc for intake and 80cc for exhaust and the engine is compression limited. The record in the C/Stock class is 10.35et @129.45mph set by a '97 Pontiac Firehawk with manual trans. They are allowed to change camshafts but are limited to .525" lift. Duration and lobe center can be altered. I'm curious if he is using a LS6 intake.........if it is using a LS1 intake, it's even more impressive.......
If anyone is interested, here's the link to the NHRA record page: http://www.nhra.com/stats/stk_record.html
Staying within the NHRA rules, this is pretty impressive. <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />
Just my .02¢
Richard <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

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10-16-2002, 10:09 PM

sited12

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Re: 400 rwhp w/ no headers or heads.......is it possible

97 is still the LT1 so it wont be using an LS6 intake.

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10-16-2002, 10:37 PM

Richard@WCCH

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Re: 400 rwhp w/ no headers or heads.......is it possible

Oops, my bad.......SS/JA(automatic).
Cheers,
Richard <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

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10-17-2002, 07:47 AM

RaNsOm

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Re: 400 rwhp w/ no headers or heads.......is it possible

<blockquote>quote:<hr />Originally posted by BillyBz28:
just curious as to if anyone has ever made 400 or close to 400 rwhp without the aid of headers or heads.
thanks
b<hr /></blockquote>Close to it. A buddy of mine is using a TR224/.581/112 cam+every bolt on+SLP LT headers and he makes 399rwhp, so take away the headers and you'd probably be somewhere near 380rwhp.

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10-17-2002, 10:11 AM

Bad1le

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Re: 400 rwhp w/ no headers or heads.......is it possible

I don't think it's possible w/ stock manifolds and stock heads. Now if n2o or forced induction is considered a bolt on then yes! But I don't think it can be done n/a.
AJ

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10-17-2002, 11:45 AM

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jmX

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Re: 400 rwhp w/ no headers or heads.......is it possible

<blockquote>quote:<hr />Originally posted by RedHotZ28:
Close to it. A buddy of mine is using a TR224/.581/112 cam+every bolt on+SLP LT headers and he makes 399rwhp, so take away the headers and you'd probably be somewhere near 380rwhp.<hr /></blockquote>Thats not close to it. There's no way that car would make 380rwhp without those headers. The headers make a whole lot more than 19rwhp at those power levels.

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10-17-2002, 05:28 PM

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Nickn20

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Re: 400 rwhp w/ no headers or heads.......is it possible

why do people ask questions like this? I don't understand them. yes you can make well over 400 rwhp without headers. NA your answer is NO. whatever you do a happy engine is a well breathing one, if you are not gonna go turbo, get headers.

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10-18-2002, 12:54 AM

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Y2K_WS6_T/A

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Re: 400 rwhp w/ no headers or heads.......is it possible

Some CAM ONLY + bolt on cars (read with headers) are doing well in excess of 400 rwhp. I would imagine without headers, the power would be about 380.

[ October 17, 2002, 01:04 PM: Message edited by: Y2K_WS6_T/A ]

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10-18-2002, 12:55 AM

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1CAMWNDR

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Re: 400 rwhp w/ no headers or heads.......is it possible

I would think you will choke the motor down to 365-370 MAYBE without the headers. Crazy ported stock 2000+ iron manifolds-----375. Again-- MAYBE .

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10-19-2002, 10:23 AM

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99 Black Bird T/A

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Re: 400 rwhp w/ no headers or heads.......is it possible

<blockquote>quote:<hr />Originally posted by BillyBz28:
just curious as to if anyone has ever made 400 or close to 400 rwhp without the aid of headers or heads.
thanks
b<hr /></blockquote>A Honda CIVIC could that NA, if somone tried way hard. they would have spend megabucks stickers, maybe even buy stickers for the stickers or something like that.

Really 400+ without heads or headers would be really hard. Wouldn't be a streetable 400 if you made it just a dyno number 400.

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10-19-2002, 02:01 PM

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Nickn20

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Re: 400 rwhp w/ no headers or heads.......is it possible

<blockquote>quote:<hr />Originally posted by 99 Black Bird T/A:
 <blockquote>quote:<hr />Originally posted by BillyBz28:
just curious as to if anyone has ever made 400 or close to 400 rwhp without the aid of headers or heads.
thanks
b<hr /></blockquote>A Honda CIVIC could that NA, if somone tried way hard. they would have spend megabucks stickers, maybe even buy stickers for the stickers or something like that.

Really 400+ without heads or headers would be really hard. Wouldn't be a streetable 400 if you made it just a dyno number 400.<hr /></blockquote>I agree, you would need a huge duration cam, and you still probably wont get close to 400.

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10-19-2002, 02:59 PM

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z0sense

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Re: 400 rwhp w/ no headers or heads.......is it possible

My Z06 will make 400 easily with tuning and a couple more minor things.

I currently make 371 corrected. With injectors, pullies, short belt, etc.....it can be done.

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10-20-2002, 09:31 AM

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99 Black Bird T/A

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Re: 400 rwhp w/ no headers or heads.......is it possible

<blockquote>quote:<hr />Originally posted by z0sense:
My Z06 will make 400 easily with tuning and a couple more minor things.

I currently make 371 corrected. With injectors, pullies, short belt, etc.....it can be done.<hr /></blockquote>I think poster was refering to the LS1 not LS6.

Also I don't think a LS6 is going to need injectors to break 400rwhp, as many have dyno'd 430rwhp+ on the stock injectors.

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