New: Edelbrock Splayed Valve Head
10-30-2010, 12:01 AM
#141
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Didn't your build end up making over 1000hp?
what's the latest news on the car, .. any test dates on that 1000hp monster?
c
03-05-2019, 07:27 PM
#142
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wow, noticed this thread, thought I would show you some of what this head has become. We looked at this head for the ADRL 400 inch and NHRA B/.A.We worked with WJ and revised the ports and had Edelbrock cast up 20 sets of what they now call the Edelbrock "Big Johnson" LS head. They are 8-degree heads and flow considerably over 500 cfm.
This motor is expected to make over 1200 hp and turn over 11,000 rpms
This head is absolutely the best option for NA applications
here is the Dart 10 degree and the Edelbrock Big Johnson. Its taller. This head is a Fuel injection head only , with the port design and chamber it would blow the boster out of a carb.
The cam tunnel is as big as the main
the lifter bores have to be moved and bank angles changes for 11,000 rpms
This motor is expected to make over 1200 hp and turn over 11,000 rpms
This head is absolutely the best option for NA applications
here is the Dart 10 degree and the Edelbrock Big Johnson. Its taller. This head is a Fuel injection head only , with the port design and chamber it would blow the boster out of a carb.
The cam tunnel is as big as the main
the lifter bores have to be moved and bank angles changes for 11,000 rpms
03-06-2019, 07:32 AM
#144
wow, noticed this thread, thought I would show you some of what this head has become. We looked at this head for the ADRL 400 inch and NHRA B/.A.We worked with WJ and revised the ports and had Edelbrock cast up 20 sets of what they now call the Edelbrock "Big Johnson" LS head. They are 8-degree heads and flow considerably over 500 cfm.
This motor is expected to make over 1200 hp and turn over 11,000 rpms
This head is absolutely the best option for NA applications.....
This motor is expected to make over 1200 hp and turn over 11,000 rpms
This head is absolutely the best option for NA applications.....
Thx!
KW
Last edited by KW Baraka; 03-06-2019 at 07:46 AM.
03-06-2019, 11:02 AM
#145
KW Barka, Greg's a great person and we've spoken on a few occasions.
They sell the intake for Carb. or EFI.
Not-a-sponsor.com
Build with special rocker arm. Bore size was open but needed to be at or under 400ci.
https://www.yellowbullet.com/forum/s....php?t=2413506
Almost forgot the heads, Gregs are a special version vs what the consumer purchases. Hence 450cfm vs 500cfm.Also i don't think the regular head will have or use the special rocker bar like Greg used in the build thread.
Not-a-sponsor.com
They sell the intake for Carb. or EFI.
Not-a-sponsor.com
Build with special rocker arm. Bore size was open but needed to be at or under 400ci.
https://www.yellowbullet.com/forum/s....php?t=2413506
Almost forgot the heads, Gregs are a special version vs what the consumer purchases. Hence 450cfm vs 500cfm.Also i don't think the regular head will have or use the special rocker bar like Greg used in the build thread.
Not-a-sponsor.com
Last edited by KCS; 03-06-2019 at 03:08 PM. Reason: Non Sponsor Links Removed
03-06-2019, 06:04 PM
#146
Greg's engine is nearly 100% custom. The intake manifold, rockers, rocker stands, valve locations, pistons, block, lifter placement, camshaft core, etc., etc., etc. are ALL custom pieces that are designed by WJ and/or the parts manufacturer.
Nothing about these heads translate into an engine you can build with "off-the-shelf" parts.
If you have the time, knowledge, resources and most likely A LOT of money, you can build one for yourself.
Nothing about these heads translate into an engine you can build with "off-the-shelf" parts.
If you have the time, knowledge, resources and most likely A LOT of money, you can build one for yourself.
03-06-2019, 07:22 PM
#147
It's nice that they have the entire induction system now, with cnc ported heads and intake to match. KCS is SDPC allowed as a site for reference for the heads?
Early version with intake.
https://www.enginelabs.com/news/cpr-...roller-ls-468/
Early version with intake.
https://www.enginelabs.com/news/cpr-...roller-ls-468/
03-06-2019, 07:31 PM
#148
KW Barka, Greg's a great person and we've spoken on a few occasions.
They sell the intake for Carb. or EFI.
Not-a-sponsor.com
Build with special rocker arm. Bore size was open but needed to be at or under 400ci.
https://www.yellowbullet.com/forum/s....php?t=2413506
Almost forgot the heads, Gregs are a special version vs what the consumer purchases. Hence 450cfm vs 500cfm.Also i don't think the regular head will have or use the special rocker bar like Greg used in the build thread.
Not-a-sponsor.com
They sell the intake for Carb. or EFI.
Not-a-sponsor.com
Build with special rocker arm. Bore size was open but needed to be at or under 400ci.
https://www.yellowbullet.com/forum/s....php?t=2413506
Almost forgot the heads, Gregs are a special version vs what the consumer purchases. Hence 450cfm vs 500cfm.Also i don't think the regular head will have or use the special rocker bar like Greg used in the build thread.
Not-a-sponsor.com
Seriously, though.....I don't see why there's an issue with posting a link to a non-sponsor if that vendor is selling parts not produced or sold by sponsors.
Jus' sayin'....
KW
03-07-2019, 09:16 AM
#150
It's nice that they have the entire induction system now, with cnc ported heads and intake to match. KCS is SDPC allowed as a site for reference for the heads?
Early version with intake.
https://www.enginelabs.com/news/cpr-...roller-ls-468/
Early version with intake.
https://www.enginelabs.com/news/cpr-...roller-ls-468/
03-07-2019, 06:42 PM
#151
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You guys are a ball of laughs. can you mention GM
These heads will still bolt to a stock Dart Next block and use all the stock cam location. We needed to turn this motor over 11,000 rpms so the extensive valvetrain work. These heads are for maximum effort Natural aspirated engine. We will probably catch the clutch above 9,000 rpms so they are no in any form or fashion designed for anything else. The combustion chamber is way to fast for any power adder.
I was asked why all the work on casting when billet would be dramatically easier. Fact is in NA gasoline engine development billet will simply not work. You need water around the chamber and plug and even where water is machined in to billet, it will not transfer the heat fast enough. You only have to look at the 500 inch DRCE IV head which is a chunk of plate aluminum with a part number its 30 hp down on the exact same design in a casting.
I'll post more pictures in the future, This motor has taken twice as long and way over budget but it will be the pinnacle of LS NA engines when finished.
These heads will still bolt to a stock Dart Next block and use all the stock cam location. We needed to turn this motor over 11,000 rpms so the extensive valvetrain work. These heads are for maximum effort Natural aspirated engine. We will probably catch the clutch above 9,000 rpms so they are no in any form or fashion designed for anything else. The combustion chamber is way to fast for any power adder.
I was asked why all the work on casting when billet would be dramatically easier. Fact is in NA gasoline engine development billet will simply not work. You need water around the chamber and plug and even where water is machined in to billet, it will not transfer the heat fast enough. You only have to look at the 500 inch DRCE IV head which is a chunk of plate aluminum with a part number its 30 hp down on the exact same design in a casting.
I'll post more pictures in the future, This motor has taken twice as long and way over budget but it will be the pinnacle of LS NA engines when finished.
03-08-2019, 11:41 PM
#153
If you can find them under the Vendor Directory tab, then you can post whatever info and links you want to.
If we didn't have sponsors that also produced cylinder heads (TSP/PRC) and intake manifolds (BTR), it would probably be ok. Like the policy states, there isn't any problem with discussing stuff like this. You can post pics, specs, etc. like Greg did, you just can't post links to the stuff with the pricing, contact info, etc. on it if it is not a vendor, like Lil Jon did.
If we didn't have sponsors that also produced cylinder heads (TSP/PRC) and intake manifolds (BTR), it would probably be ok. Like the policy states, there isn't any problem with discussing stuff like this. You can post pics, specs, etc. like Greg did, you just can't post links to the stuff with the pricing, contact info, etc. on it if it is not a vendor, like Lil Jon did.
KW
03-09-2019, 04:05 PM
#156
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The bore on the Dart Next Block is 4.220 and can on iron block go to 4.230. With a CG block it can go bigger. If you look close at the blocks the water passages are no longer through the front of the block. This was somthing that WJ and Richard Maskin worked out. The blocks can go as low as 8.800 beck but with fuel injection we didn't go there. The rod to stroke in these motors are way longer then any NA deal I have ever been involved with.
The rockers bodys are off the shelf Crower 2.0 with stands that Tommy did under the tutalage of WJ. The math to build these stands hurts my head but Tommy learned enought that all new head designs go to him to design rockers form Crower.
The rings are stupid small . .023 or less.
Rods are Carralio and pistons are CP. rings are Total seal
Crank is 3.55 windburg
the valves are huge on intaqke side and smaller then stock on exhaust.
03-09-2019, 04:19 PM
#157
You know i luv your right? So the cgi block is the bigger bore block. The guy with "spinal tap" the high rpm LSX block is the only one i've seen with a .250 overbore. Thanks again! Saved me a phone call for the knowledge. Was talking to Eric @ HPR about his bigger Ls engines so, a tall deck really big bore maybe a option, or what you have Greg with a bigger stroke with deck options.
Last edited by Smokey B; 03-09-2019 at 04:29 PM.
03-09-2019, 05:52 PM
#158
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You know i luv your right? So the cgi block is the bigger bore block. The guy with "spinal tap" the high rpm LSX block is the only one i've seen with a .250 overbore. Thanks again! Saved me a phone call for the knowledge. Was talking to Eric @ HPR about his bigger Ls engines so, a tall deck really big bore maybe a option, or what you have Greg with a bigger stroke with deck options.
On air flow, These heads are efficient and make every last hp possible when leaned on. The CFM is well over 500 on a conservative bench but that is not the entire story, its also about loading the chamber and achieving a homogeneous mixture.
This motor will likely see one of the LS fests and set the record for NA LS engines. We feel that the car will run in the 6.750 to 6.80 range
we have been testing the car with a pratice engine but its neat to hear
https://www.youtube.com/watch?v=RXXU...FKrH9ihzmJAjpw
10-16-2019, 06:59 PM
#160
We have been testing the car with a pratice engine but its neat to hear
https://www.youtube.com/watch?v=RXXU...FKrH9ihzmJAjpw
https://www.youtube.com/watch?v=RXXU...FKrH9ihzmJAjpw
Is the “test engine” in that vette from the video also an Edelbrock LSR? It sounds so damn good.