what allows an engine to spin to 8,000+ rpms, and stay together for a long time
10-30-2006, 05:40 PM
#41
Originally Posted by Quickin
You just need to get out more. There all over the place down here. You can only learn so much hanging out on internet forums.
NRE is just one of those builders that build just that type pf car. Minus the parts hauler.
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NRE is just one of those builders that build just that type pf car. Minus the parts hauler.
.
oh, i know they're out there....
i just like making it hard on myself.. lol.
10-31-2006, 12:01 PM
#42
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Originally Posted by Quickin
Is it just a matter of proper balancing and good parts? Can it safely be made to spin 9,000 rpm? What will ultimately limit how many rpm's it can safely go. Shorter stroke? I'm going 4.155 bore, I could go with a 4.100 stroke...445ci or a 4.00 stroke for a 434....if it will ultimately make more power due to the higher rpm's allowed.
Key words hear.....SAFELY and LONG LASTING.
I want the LS7 blocked 447ci with a 250 progressive shot that I'm having built to spin HIGH but remain reliable. It'll have a Lunati crank, Manley rods and Wiseco pistons. I'm just on the fence whether or not to go solid roller for more peak HP. 50-180mph runs ONLY, no track visits.
I have about 2-3 weeks to make the decision.
I don't need to hear that a solid roller set-up is going to require more expensive heads/parts, I already know that.
.
Key words hear.....SAFELY and LONG LASTING.
I want the LS7 blocked 447ci with a 250 progressive shot that I'm having built to spin HIGH but remain reliable. It'll have a Lunati crank, Manley rods and Wiseco pistons. I'm just on the fence whether or not to go solid roller for more peak HP. 50-180mph runs ONLY, no track visits.
I have about 2-3 weeks to make the decision.
I don't need to hear that a solid roller set-up is going to require more expensive heads/parts, I already know that.
.
10-31-2006, 05:26 PM
#43
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Originally Posted by V6 Bird
Theres companies out now that are making rev kits to keep these cars hydraulic roller. You could use them in conjunction with the new GM lifters and see 8500 safely. The rev kits are helping stabilize the valvetrain in high RPm applications for those who dont want to run solid roller setups.
Another thing you dont take into consideration is oiling at those rpm's. A typical wet sump system isn't going to get the job done and dry sumps are pricey.
10-31-2006, 05:42 PM
#44
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Originally Posted by Quickin
Is it just a matter of proper balancing and good parts? Can it safely be made to spin 9,000 rpm? What will ultimately limit how many rpm's it can safely go. Shorter stroke? I'm going 4.155 bore, I could go with a 4.100 stroke...445ci or a 4.00 stroke for a 434....if it will ultimately make more power due to the higher rpm's allowed.
Key words hear.....SAFELY and LONG LASTING.
I want the LS7 blocked 447ci with a 250 progressive shot that I'm having built to spin HIGH but remain reliable. It'll have a Lunati crank, Manley rods and Wiseco pistons. I'm just on the fence whether or not to go solid roller for more peak HP. 50-180mph runs ONLY, no track visits.
I have about 2-3 weeks to make the decision.
I don't need to hear that a solid roller set-up is going to require more expensive heads/parts, I already know that.
.
Key words hear.....SAFELY and LONG LASTING.
I want the LS7 blocked 447ci with a 250 progressive shot that I'm having built to spin HIGH but remain reliable. It'll have a Lunati crank, Manley rods and Wiseco pistons. I'm just on the fence whether or not to go solid roller for more peak HP. 50-180mph runs ONLY, no track visits.
I have about 2-3 weeks to make the decision.
I don't need to hear that a solid roller set-up is going to require more expensive heads/parts, I already know that.
.
Determine your end goals and then work back to determine what it's going to take to get there.
Nate
10-31-2006, 05:59 PM
#45
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Originally Posted by Nate_Taufer
You need to give us a realistic set of goals for power requirements and how long you need it to last between builds for us to help you man. Just saying you want to spin your motor to 9000 rpms because it makes more hp up there is ridiculous. Especially when you say you want it to be reliable.
Determine your end goals and then work back to determine what it's going to take to get there.
Nate
Determine your end goals and then work back to determine what it's going to take to get there.
Nate
.
10-31-2006, 06:19 PM
#48
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Nate,
I guess I just need to have another badass stroker engine built and spray it and it'll be just fine.
The builder I'm using built my friend in West Palm a 422ci (535 RWHP, N/A), 3 1/2 years ago that he's been spraying a 300 shot (850 RWHP) for the past year and the engine is still perfect. All he does is roll races and he kills everything he races.
.
I guess I just need to have another badass stroker engine built and spray it and it'll be just fine.
The builder I'm using built my friend in West Palm a 422ci (535 RWHP, N/A), 3 1/2 years ago that he's been spraying a 300 shot (850 RWHP) for the past year and the engine is still perfect. All he does is roll races and he kills everything he races.
.
10-31-2006, 07:05 PM
#49
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Originally Posted by Quickin
Nate,
I guess I just need to have another badass stroker engine built and spray it and it'll be just fine.
The builder I'm using built my friend in West Palm a 422ci (535 RWHP, N/A), 3 1/2 years ago that he's been spraying a 300 shot (850 RWHP) for the past year and the engine is still perfect. All he does is roll races and he kills everything he races.
.
I guess I just need to have another badass stroker engine built and spray it and it'll be just fine.
The builder I'm using built my friend in West Palm a 422ci (535 RWHP, N/A), 3 1/2 years ago that he's been spraying a 300 shot (850 RWHP) for the past year and the engine is still perfect. All he does is roll races and he kills everything he races.
.
Might want to contact Greg Fell for info regarding the guy who ported his LS7 heads/intake combo. They put up some ridiculous numbers on the flow bench (like 360 through the intake). Just a suggestion if you don't have a topend in mind yet.
Nate
10-31-2006, 08:13 PM
#50
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Originally Posted by Nate_Taufer
I'd do the same thing with as many cubes as possible, but just wouldnt get crazy with the rpm. RPM kills parts longevity plus the added cost and complexity of a dry sump and solid roller (i am sure you're familiar with) just adds to the package. Spin it to no more than 7500 rpms with a well thought out hydraulic roller valvetrain and you should have no problem going for 2+ years.
Might want to contact Greg Fell for info regarding the guy who ported his LS7 heads/intake combo. They put up some ridiculous numbers on the flow bench (like 360 through the intake). Just a suggestion if you don't have a topend in mind yet.
Nate
Might want to contact Greg Fell for info regarding the guy who ported his LS7 heads/intake combo. They put up some ridiculous numbers on the flow bench (like 360 through the intake). Just a suggestion if you don't have a topend in mind yet.
Nate
Yeah, the top end is gonna be LS7 heads and a sheet metal intake (Hogan or Beck) or the Harrop. Beck is $2,000 with Billet fuel rails fit and matched for the LS7 heads by Beck. No need to use an LS7 intake and hold back the LS7 heads. And a 105 mm TB.
.
10-31-2006, 11:35 PM
#51
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Originally Posted by Quickin
The guy thats going to build it ports LS7 heads and gets 392 cfm @ .650 lift. I am using a dry sump oil system. Greg is actually contacting my guy for some info and insight.
Yeah, the top end is gonna be LS7 heads and a sheet metal intake (Hogan or Beck) or the Harrop. Beck is $2,000 with Billet fuel rails fit and matched for the LS7 heads by Beck. No need to use an LS7 intake and hold back the LS7 heads. And a 105 mm TB.
.
Yeah, the top end is gonna be LS7 heads and a sheet metal intake (Hogan or Beck) or the Harrop. Beck is $2,000 with Billet fuel rails fit and matched for the LS7 heads by Beck. No need to use an LS7 intake and hold back the LS7 heads. And a 105 mm TB.
.
Keep us updated on your build, should be interesting considering setups like this are few and far between.
Nate
11-01-2006, 12:13 AM
#52
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Originally Posted by Nate_Taufer
We're on the same page with the 105mm TB but as for the flow numbers I was referring to the intake/heads flowed together at 360. I'm sure you could definitely improve upon that with the sheet metal stuff though if your head guy is getting 390 cfm out of em.
Keep us updated on your build, should be interesting considering setups like this are few and far between.
Nate
Keep us updated on your build, should be interesting considering setups like this are few and far between.
Nate
.
11-01-2006, 07:20 AM
#53
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Originally Posted by Nate_Taufer
The hydraulic cams you're talking about safely reving to 8000+ are doing it with low lift cams that can survive 24 hours of Lemans, not the XER, cam motion, LSK, and other associated aggresive lobes we have. I wouldn't rev a hydraulic roller over 7500 if you want it to be reliable with the typical cams the LSX crowd runs.
Another thing you dont take into consideration is oiling at those rpm's. A typical wet sump system isn't going to get the job done and dry sumps are pricey.
Another thing you dont take into consideration is oiling at those rpm's. A typical wet sump system isn't going to get the job done and dry sumps are pricey.
11-02-2006, 06:14 AM
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I think its ok to post a link but here's a link of a rev kit from comp: http://www.compcams.com/catalog/289.html I think this is what your talking about?
11-02-2006, 11:26 AM
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Originally Posted by LastBlack02SS
I think its ok to post a link but here's a link of a rev kit from comp: http://www.compcams.com/catalog/289.html I think this is what your talking about?
11-12-2006, 03:15 PM
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67 tempest on any build (of equal or the same block) more displacement is the cheaper and more reliable way to go for more horse power and torque. it is also more street friendly. with high rpm engines rotating mass is the enemy. i'd go with displacement.
12-21-2006, 03:51 PM
#57
Originally Posted by V6 Bird
Yes very similar..Ill get some pics of it in the next few days to show you the LS1 style.
12-22-2006, 08:16 AM
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Originally Posted by 429 Mustang
We're still waiting for the details on this 8000 RPM rev kit.
12-22-2006, 09:29 PM
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Originally Posted by 429 Mustang
We're still waiting for the details on this 8000 RPM rev kit.