I hope I don't need to explain that a stock LS1 does not mean it was 100% stock. I am talking heads, block, crank, cubes, etc. The point was that 7k is not high for a small motor (3.622" stroke).
Edit: only hit 8200 on that pass. Although it was on the limiter for about a second which probably didn't extend the engine's life very much! lol
Or was it free-revving it to 7k+ over and over while chasing down some problems that set it up for an untimely disaster.
__________________ Laydown Racing
Former weapon: Twin-turbo stock ls1
8.78 @ 161 on et streets @ 3450 lbs.
2000 z28 Street Car coming for 2008
For a 3.622" stroke motor, I would say HIGH is near 9500.
This is the first I have ever heard of anyone spinning to like 9500rpm. I personally have not seen a SR setup spinning higher than 8krpm. This is all news to me...
I just looked he hit 700 on a mustang dyno with 93 which is 750 dynojet. He gets some very high numbers. I am stuck with 91 here in Ca and am shooting for 650+ rwhp and a single turbo and large FMIC. I will be very happy if we hit 700 rwhp.
91 octane pump gas/ 9psi 707rwhp/ can be done with the right combo build
hence 408... now take it to 15+ psi we will be talking 800+
This is the first I have ever heard of anyone spinning to like 9500rpm. I personally have not seen a SR setup spinning higher than 8krpm. This is all news to me...
NHRA Pro-stockers go to 10k with much bigger motors.
Even look at classes like NMCA pro-stock. I know Chris U spins his 358 SBF to 9500 all day. Not bad for a high 8-second n/a motor with an automatic at around 2900-3000 lbs I believe on true 10.5's.
What is your e-mail? I will send you a capture of one of my big stuff logs so you can see what kinda rpm we hit on that 8-second pass. Unless you have big stuff software and I can just send the actual log file and you can check it out in detail.
I tried to upload a screen shot and it doesn't come out very good as you can see here:
__________________ Laydown Racing
Former weapon: Twin-turbo stock ls1
8.78 @ 161 on et streets @ 3450 lbs.
2000 z28 Street Car coming for 2008
NHRA Pro-stockers go to 10k with much bigger motors.
Even look at classes like NMCA pro-stock. I know Chris U spins his 358 SBF to 9500 all day. Not bad for a high 8-second n/a motor with an automatic at around 2900-3000 lbs I believe on true 10.5's.
What is your e-mail? I will send you a capture of one of my big stuff logs so you can see what kinda rpm we hit on that 8-second pass. Unless you have big stuff software and I can just send the actual log file and you can check it out in detail.
I tried to upload a screen shot and it doesn't come out very good as you can see here:
If folks can afford a 4.000 crank, I'd say why not. Heck my 346ci has to boost to nearly 24psi to make 867rwhp thru a T400, and a 400ci with the same turbo would probably only have to boost around half of that... Then again bigger cubes can push a combo into some 7 second classes.
If folks can afford a 4.000 crank, I'd say why not. Heck my 346ci has to boost to nearly 24psi to make 867rwhp thru a T400, and a 400ci with the same turbo would probably only have to boost around half of that... Then again bigger cubes can push a combo into some 7 second classes.
Whatever you do, don't listen to this guy! lol
__________________ Laydown Racing
Former weapon: Twin-turbo stock ls1
8.78 @ 161 on et streets @ 3450 lbs.
2000 z28 Street Car coming for 2008
so youre gonna take it up in boost. good luck on the build. is your goal 700?
I will be happy with anything over 650rwhp on pump 91 no meth. I want a safe street tune since this is a purely street driven car. Thinkin I might hit 700 though. Its an M6 with factory 10 bolt and factory 3:42 gears. I will go to an S60 oneday though. It has a fuel system good for 750 rwhp or more. FMIC rated to 1100hp. Stay tuned I have a build thread going titled Hi-Flo street killer pics.
I was gonna post about 346 cid motors spinning high, but LTLHomer schooled us... I had heard/read 8500 rpm, but NOT 9500 rpm!!!
That could do quite a bit with a large turbo despite the small cubes.
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I was gonna post about 346 cid motors spinning high, but LTLHomer schooled us... I had heard/read 8500 rpm, but NOT 9500 rpm!!!
That could do quite a bit with a large turbo despite the small cubes.
I don't know of an LS1 specifically spinning that high, but 9500 was a 358 inch SBF motor. Probably slightly shorter stroke. Spin it until parts come out, build it again and set the limiter just under that! (OJ86 quote)
__________________ Laydown Racing
Former weapon: Twin-turbo stock ls1
8.78 @ 161 on et streets @ 3450 lbs.
2000 z28 Street Car coming for 2008
benefits of more cubes is simply more torque, and more power in low and midrange which is where you spend most of your time if you are a street car.
The guys running 402's with boost are making fantastic power.
if you got the cash do it otherwise make up the difference with more boost.
lt1 homer, were you using the stock oil pump system or did you go aftermarket like ls7 style?
High rpm's are nice but are hard on internals and usually Ruin's People's Motors. I had a 94 Integra GSR back in the day that was a 13.3:1 compression'd motor that I spun to 9 grand that was a trip.
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Don't listen to Sean talk about spinning a stock crank 346ci to 8500, didn't yours die an ugly death? Right back atcha smartypants.
Probably not a great idea on a stock oiling system. But I think being on the limiter at 8300 for awhile didn't help. Plus while we were chasing down the crank signal stuff, we had to free-rev it to 7k probably 100 times. Not to mention that we made more passes last year than you've made in the last 5 combined.
Or maybe it was the used eagle rods? Or just the insane amount of power...hahaha you're my fave John!
__________________ Laydown Racing
Former weapon: Twin-turbo stock ls1
8.78 @ 161 on et streets @ 3450 lbs.
2000 z28 Street Car coming for 2008
benefits of more cubes is simply more torque, and more power in low and midrange which is where you spend most of your time if you are a street car.
The guys running 402's with boost are making fantastic power.
if you got the cash do it otherwise make up the difference with more boost.
lt1 homer, were you using the stock oil pump system or did you go aftermarket like ls7 style?
High rpm's are nice but are hard on internals and usually Ruin's People's Motors. I had a 94 Integra GSR back in the day that was a 13.3:1 compression'd motor that I spun to 9 grand that was a trip.
Stock oiling setup with aftermarket pump of course. We actually had another local high-revving ls1 motor have some troubles with the same oil pump that I had and wound up spinning a bearing but mine happened too fast and just took out a rod and another was about to let go as well. I know the oil boys run accumulator setups on theirs which would be the next best thing to a dry sump or ls7 style dry sump.
Actually I saw their new red camaro on Friday night and it was dry sump.
I think the 35th anniv t/a still has the accum setup.
__________________ Laydown Racing
Former weapon: Twin-turbo stock ls1
8.78 @ 161 on et streets @ 3450 lbs.
2000 z28 Street Car coming for 2008
My only reasoning for the small cube motor was torque-I don't need it. It's just gonna break more drivetrain parts that just cannot keep up. If it was a race car, then I would of built the stroker.
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