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How to build 1000 hp LT1

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Old Feb 2, 2008 | 12:41 PM
  #1  
Kredz28's Avatar
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How to build 1000 hp LT1

I am seeing more and more 1000+ hp ls1's over on ls1tech and it's making me wonder about the LT1. My goal in life is to build a 1000 horse LT1, but it seems as if thats a milestone in itself. Anyone on Z28.COM have more than 1000 rwhp? What kind of combo would be needed to get there?? Im assuming Ill likely need more than an F1A to do it.
I'm not looking to build anything anytime soon, but would love to see some cool setups.
Old Feb 2, 2008 | 12:54 PM
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nes's Avatar
nes
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forged 396, Well ported heads with a cam to match and a set of twins might just do it for you. ive never seen it done, but it would be a VERY nice setup and somthing to talk about...
Old Feb 2, 2008 | 02:46 PM
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more money than any sane person is going to spend lol are you looking for 1000 engine or rwhp? 1000rwhp is just crazy considering most 1000rwhp cars get there asses handed to them by properly setup 500rwhp cars. though the looks youd get when you say its a LT1 "wasnt that the crappy motor before the gods gift ls1?"
ive heard of a few 1000 engine hp LT1's but seeing is believing so until i got proof id say it hasnt been done, though i remember reading about big ricks setup but i dont remember what it was putting out,maybe over a 1000, someone else can clarify that for me. good luck
Old Feb 2, 2008 | 03:08 PM
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Obviously the BIG question is FWHP OR RWHP as mentioned above. The next biggest question is, is it reliable HP??? Then the third question is normally aspirated, forced induction or nitrous OR a combination of both?
Old Feb 2, 2008 | 03:32 PM
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Originally Posted by subarubill96
more money than any sane person is going to spend lol are you looking for 1000 engine or rwhp? 1000rwhp is just crazy considering most 1000rwhp cars get there asses handed to them by properly setup 500rwhp cars. though the looks youd get when you say its a LT1 "wasnt that the crappy motor before the gods gift ls1?"
ive heard of a few 1000 engine hp LT1's but seeing is believing so until i got proof id say it hasnt been done, though i remember reading about big ricks setup but i dont remember what it was putting out,maybe over a 1000, someone else can clarify that for me. good luck
Didnt intimid8's car make 9 and change rwhp?
Old Feb 2, 2008 | 03:44 PM
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did a 780rwhp dynorun on a pig rich pull widh a looose converter spring 2007. went 8.9 something first event 2007, after we leaned it out a bit it made 8.7 added a 100shot N20 and it went 5,4 8.41 after a little tuning, first real test on TB (from 2500) it went 5,29 in the 1/8 whitoute going WOT all the way (big chassie problems)
Accourding to the moroso calculator we are just above 1000 fwhp. cant say for sure that we are 1000+ but we have run the engine above 600rwhp since 2004 and it just go faster and faster, broke the ringland on the SRPs in the last race first season beacuse of to small ringap, no problems after that.
eagel crank 3.75, H-beam rods, SRP pistons, TFS heads from LE and a really wild custom cam from bret (still hydraulic roller) F1sc widh meth/water inkection, 4bolt splayed main caps and halv filled block, have run it on a 50/50 mix of pumpgas and E85 + a 100wet shot N2O.
new for this season is a bigger fuelpump and E85 all the way, also have replaced the 8 3/4 rear axle widh a 9" so i can start from more than 2500rpm whidout worries http://www.nonameracing.se/photos/de...ASCONA0719.jpg
No F-body from 2007 ->
Going for 8.1 2008
Old Feb 2, 2008 | 03:53 PM
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Originally Posted by 97s10ondubs
Didnt intimid8's car make 9 and change rwhp?
totally forgot about that car. i heard that it was wicked reliable too.the turbo setup was for sale alittle awhile ago, i would of killed for it but i didnt see it until it was sold so engine power wise it is possible but rwhp wise, anyone know of it being done? as far as normally aspirated, i dont think 1000 engine horsepower is possible, so it would have to be boosted or N/A with a crap load of spray. what ive heard about 1000 engine hp LT1's is that they usually dont last long due to seeing such extreme cylinder pressues and usually being bored out so not having much support in the walls so the blocks crack. we can all dream tho
Old Feb 2, 2008 | 03:54 PM
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i only know of two cars to crack 1000rwhp. One ptk setup with stock casting that jose at forced inductions did. 1012rwhp i think. The other is sleeperz28, he has a pair of twins that puts out 1003rwhp and 850rwtq.
If i was trying to do it i would get a large single(s91 or t88) or twin setup. Tfs 220's or afr's, fancy bottom end, big stuff 3, etc.
Old Feb 2, 2008 | 05:46 PM
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Originally Posted by Lisa33
did a 780rwhp dynorun on a pig rich pull widh a looose converter spring 2007. went 8.9 something first event 2007, after we leaned it out a bit it made 8.7 added a 100shot N20 and it went 5,4 8.41 after a little tuning, first real test on TB (from 2500) it went 5,29 in the 1/8 whitoute going WOT all the way (big chassie problems)
Accourding to the moroso calculator we are just above 1000 fwhp. cant say for sure that we are 1000+ but we have run the engine above 600rwhp since 2004 and it just go faster and faster, broke the ringland on the SRPs in the last race first season beacuse of to small ringap, no problems after that.
eagel crank 3.75, H-beam rods, SRP pistons, TFS heads from LE and a really wild custom cam from bret (still hydraulic roller) F1sc widh meth/water inkection, 4bolt splayed main caps and halv filled block, have run it on a 50/50 mix of pumpgas and E85 + a 100wet shot N2O.
new for this season is a bigger fuelpump and E85 all the way, also have replaced the 8 3/4 rear axle widh a 9" so i can start from more than 2500rpm whidout worries http://www.nonameracing.se/photos/de...ASCONA0719.jpg
No F-body from 2007 ->
Going for 8.1 2008
Your car is nothing short of impressive. It's amazing what you guys have been able to accomplish. What's the chassis set-up in the car. Presuming the car was back-halved with a 4-link. You guys should bring that thing to the states.
Old Feb 3, 2008 | 07:07 AM
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Thanks
Its an full tube chassie car (7,5 sec mild steel), nothing really special aboute it, built for aprox 10 years ago for S/G and the chepest i could find
Bought it beacause they had to close down my nerest permanent raceway and a lot of the others are old military airfields widh on or two ewent/year so the grip isnt enough for the heavy camaro.
There was a lot of problems last year, mostley beacuse of a damage rear shock absorber and a anti rollbar that was built in mild steel Car was all over the track in most events in the last halv of the season (season here is 4 months).

Bring it over to USA, it should be nice but i belive that it shouldnt be accepted in a LT1 shootout for example.
It has been a couple of sweeds that have shipped over there cars, Robert P has one of the fastest cyclons (or fastest) in the world, hi did a nice journey over there but was denied to run faster then 10sec beacuse of some NHRA sticker he didnt have (he did a really low 9 )

Also Bostic did a try, he runs a autoshop built 396LT1 in one of the fastest impala 4000+lbs, he missed the races he should run beacuse of "catharina", the boat it was on landed down in mexico or something like that
Old Feb 3, 2008 | 08:14 AM
  #11  
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You're right, the chassis set-up you have in your car would exclude you from participating in the LT-X Shootout coming up here in April, but needless to say, it's a bad azz car and the numbers don't lie. You're making some big power with the LT-1 and I would say it has proven to be reliable as well. Do you have any plans to get it on a dyno this year? Also, what does the car weigh? What trans are you using? I thought we had it bad here in the Chicago area for our racing season...4 months is BAD. I'd be bouncing off the walls by the time opening day comes around.
Old Feb 3, 2008 | 09:38 AM
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Race weight last spring was 2550lbs, trap speed 1/8 is 132,9 mph
Tranny is a JW powerglide, converter is built in sweden widh parts from sonax.
I dont think there will be any dynotesting this yea, hopefully i can run a test n tune event beafore first race otherwise it can be a dynotest just to tune in the E85.

Yea raceseason is short, have run in 2 different race series/year last 2 year so we have at least 10-11race weekends/year so its a real hectic and fun summer over here.
Old Feb 3, 2008 | 11:11 AM
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Originally Posted by subarubill96
...what ive heard about 1000 engine hp LT1's is that they usually dont last long due to seeing such extreme cylinder pressues and usually being bored out so not having much support in the walls so the blocks crack. we can all dream tho
I'm making around 950 fwhp at 17 psi from a turbo using the stock block bored to .060 and no fill. I've been running it like this for a couple years now with no significant block problems at all. I see full boost a couple times a week and even abused it to the point of breaking pistons on more occasions than I care to remember. The LT1 block is a stout piece, with wall thicknesses approaching aftermarket engine blocks such as Bowtie or Little M. The biggest problem I've had is fretting under the main caps from cap walk, but that's never hurt anything so far.

Mike
Old Feb 3, 2008 | 11:15 AM
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Originally Posted by engineermike
The LT1 block is a stout piece, with wall thicknesses approaching aftermarket engine blocks such as Bowtie or Little M.
Thats intresting, have you messured it or were have you got this information?
(We filled oure block when we decied to go racing only)
Old Feb 3, 2008 | 11:17 AM
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Originally Posted by Lisa33
Thats intresting, have you messured it or were have you got this information?
(We filled oure block when we decied to go racing only)
I've heard before that someone weighed a Little M and it was very close to a stock LT1 so I took a few spot readings on my block and it was close.

I thought for a while about filling mine, but with the amount of street use my car gets, I didn't want to compromise the cooling system.

Mike



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