How high can you take a stock bottom end LS1?
10-20-2008, 09:14 PM
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How high can you take a stock bottom end LS1? Ok fellas how far can one safely take a stock bottom end LS1 with dual vavle springs and hardened PR's? Ive heard that later on the LS1's recieved better rod bolts so some can rev higher than others. Mine is an 02 so could I set my shift point at around 7000 or am I asking for trouble?
10-20-2008, 09:18 PM
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you should be safe seeing as you have a 02 with the upgraded rod bolts. i shift my 99 at 6800 with stock bottom end so you shouldn't have a problem.
Last edited by styoung; 10-20-2008 at 09:23 PM.
10-21-2008, 09:29 AM
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With Katech Rod-Bolts I have a few friends shifting at 7,200rpm on high mileage motors. I think Jonathan at Tick Performance will try to take his to the limit so keep an eye on him.
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10-21-2008, 11:48 AM
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10-21-2008, 01:38 PM
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was shifting at 6800 98 with arp rod bolts seen the 7000 rev limit several times....but now it has a wrist pin thrashing...lol 157k miles though...engine still runs strong...haha just noisy...
10-24-2008, 05:30 PM
#17
I just saw this thread and thought I'd reply since I was mentioned (although I'm a couple days late LOL).
Right now we're turning the current engine in my car to 7300 through the traps. Stock bottom end with Katech bolts. We turned it repeatedly to 7600 rpms on the dyno with no problems yet. Years ago I turned one to 6800 rpms with the limiter at 7000 all the time with a 150 TNT system on top of cam/heads/etc. with stock rod bolts in a 99 model. Eventually it snapped a rod later on with a 200 shot making right at 600 rwph, but the cause was a spun bearing.
When the rod broke it had arp bolts, an upgrade I did to support the 200 shot LOL.
I feel like the oiling system was the cause of that failure. With the current combo we're using a Canton pan with a remote mounted filter. No factory windage tray to allow an easier pather for the oil to return(it wouldn't fit with the canton pan anyway) and 5w20 oil which will also allow the oil to return to the pan quicker. We're also using a ported melling pump with the high pressure spring. We're seeing around 80 psi of pressure above 6000 rpms even with the thin oil.
The factory oil pan is very, VERY restrictive where the oil routes into and out of the filter. By going to the Canton pan we eliminate several sharp 90 degree turns as the oil flows through the filter. Now the oil flows through -10 line to a much larger filter.
This fall we're going to push the limits of the stock bottom. An even lower gear is going in which should put us around 7700 through the traps.
Right now we're turning the current engine in my car to 7300 through the traps. Stock bottom end with Katech bolts. We turned it repeatedly to 7600 rpms on the dyno with no problems yet. Years ago I turned one to 6800 rpms with the limiter at 7000 all the time with a 150 TNT system on top of cam/heads/etc. with stock rod bolts in a 99 model. Eventually it snapped a rod later on with a 200 shot making right at 600 rwph, but the cause was a spun bearing.
When the rod broke it had arp bolts, an upgrade I did to support the 200 shot LOL.
I feel like the oiling system was the cause of that failure. With the current combo we're using a Canton pan with a remote mounted filter. No factory windage tray to allow an easier pather for the oil to return(it wouldn't fit with the canton pan anyway) and 5w20 oil which will also allow the oil to return to the pan quicker. We're also using a ported melling pump with the high pressure spring. We're seeing around 80 psi of pressure above 6000 rpms even with the thin oil.
The factory oil pan is very, VERY restrictive where the oil routes into and out of the filter. By going to the Canton pan we eliminate several sharp 90 degree turns as the oil flows through the filter. Now the oil flows through -10 line to a much larger filter.
This fall we're going to push the limits of the stock bottom. An even lower gear is going in which should put us around 7700 through the traps.
10-24-2008, 08:47 PM
#18
I just saw this thread and thought I'd reply since I was mentioned (although I'm a couple days late LOL).
Right now we're turning the current engine in my car to 7300 through the traps. Stock bottom end with Katech bolts. We turned it repeatedly to 7600 rpms on the dyno with no problems yet. Years ago I turned one to 6800 rpms with the limiter at 7000 all the time with a 150 TNT system on top of cam/heads/etc. with stock rod bolts in a 99 model. Eventually it snapped a rod later on with a 200 shot making right at 600 rwph, but the cause was a spun bearing.
When the rod broke it had arp bolts, an upgrade I did to support the 200 shot LOL.
I feel like the oiling system was the cause of that failure. With the current combo we're using a Canton pan with a remote mounted filter. No factory windage tray to allow an easier pather for the oil to return(it wouldn't fit with the canton pan anyway) and 5w20 oil which will also allow the oil to return to the pan quicker. We're also using a ported melling pump with the high pressure spring. We're seeing around 80 psi of pressure above 6000 rpms even with the thin oil.
The factory oil pan is very, VERY restrictive where the oil routes into and out of the filter. By going to the Canton pan we eliminate several sharp 90 degree turns as the oil flows through the filter. Now the oil flows through -10 line to a much larger filter.
This fall we're going to push the limits of the stock bottom. An even lower gear is going in which should put us around 7700 through the traps.
Right now we're turning the current engine in my car to 7300 through the traps. Stock bottom end with Katech bolts. We turned it repeatedly to 7600 rpms on the dyno with no problems yet. Years ago I turned one to 6800 rpms with the limiter at 7000 all the time with a 150 TNT system on top of cam/heads/etc. with stock rod bolts in a 99 model. Eventually it snapped a rod later on with a 200 shot making right at 600 rwph, but the cause was a spun bearing.
When the rod broke it had arp bolts, an upgrade I did to support the 200 shot LOL.
I feel like the oiling system was the cause of that failure. With the current combo we're using a Canton pan with a remote mounted filter. No factory windage tray to allow an easier pather for the oil to return(it wouldn't fit with the canton pan anyway) and 5w20 oil which will also allow the oil to return to the pan quicker. We're also using a ported melling pump with the high pressure spring. We're seeing around 80 psi of pressure above 6000 rpms even with the thin oil.
The factory oil pan is very, VERY restrictive where the oil routes into and out of the filter. By going to the Canton pan we eliminate several sharp 90 degree turns as the oil flows through the filter. Now the oil flows through -10 line to a much larger filter.
This fall we're going to push the limits of the stock bottom. An even lower gear is going in which should put us around 7700 through the traps.
10-25-2008, 09:20 AM
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Could not even begin to tell you how many times I clipped the 7K limiter with my 99. I have recently added Katechs for ease of tempting fate but the limiter got bumped to 7100.