Engine choices ..
Instructor
Joined: Dec 2013
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From: Maui Hawaii
This is off of Worlds site:
The Motown LS block is also designed for the water flow characteristics and bolt pattern of the LS head. It is manufactured with a 9.240-inch deck height that matches production LS blocks, so off-the-shelf LS manifolds bolt right up. Headers designed for LS-style cylinder heads are required.
http://www.worldcastings.com/news_ar...iew.php?nak=69
The Motown LS block is also designed for the water flow characteristics and bolt pattern of the LS head. It is manufactured with a 9.240-inch deck height that matches production LS blocks, so off-the-shelf LS manifolds bolt right up. Headers designed for LS-style cylinder heads are required.
http://www.worldcastings.com/news_ar...iew.php?nak=69
Race Director
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From: Millington Illinois
St. Jude Donor '08-'09
I like it. Haven't seen one. Your at about $3600 for the block and adapters plus whatever the accessory adapters cost. Everything else is pretty much straight up off the shelf SBC or LX. A little M is about $1300 less but a lot harder to get 600 HP out of. Wonder what that special cam cost?
Instructor
Joined: Dec 2013
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From: Maui Hawaii
Square bore (Holley style) LS intakes are available from World and Edelbrock to name two and correct fitment is already addressed by the articles. So the intake manifolds are there for your EZ-EFI.
Everything else from your current SBC will bolt right up.
THEN, there's the cool factor when you pop the hood ... onlookers exclaiming WOW an LS conversion ... Ohh WAIT !!!
THEN, you tell them that a 427 LS makes less power than your new LS Hybrid ... WOW more cool factor.
Finally, no denying that a 427 SBC would pop right in there with less hassle but where is the cool factor with that swap?
EDIT: 63mako did get his answer in before me ... probably while I was still pecking away on my keyboard
Last edited by 82CFI; Mar 16, 2014 at 02:36 AM.
Le Mans Master
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From: Canada
Here's it on the show, I've been trying to follow this block combo since it was first announced a number of years ago. Talked to 1 person who actually built one and said that there were some issues with both the block and Warhawk heads but thinks that the redesign GenII block would resolve them. I think one of the online articles talked about the redesign. An issue that I see is that their online list of Cdn sellers don't actually have them listed. I'll email/call them this week as to why.
http://www.powerblocktv.com/episodes...allblock-build
http://www.powerblocktv.com/episodes...allblock-build
Thread Starter
Safety Car
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From: New York
I like it. Haven't seen one. Your at about $3600 for the block and adapters plus whatever the accessory adapters cost. Everything else is pretty much straight up off the shelf SBC or LX. A little M is about $1300 less but a lot harder to get 600 HP out of. Wonder what that special cam cost?
I am past surprised no one on this forum has tried it yet ..
Race Director
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From: Millington Illinois
St. Jude Donor '08-'09
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Safety Car
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From: anchorage ak
I'd heard of this block, but never heard of any body having one. Very interesting. Why is the cam shaft not either an gen1 or ls? If you have to pay for a custom cam, does this give you a lot of choices as to valve timing and events?
Thread Starter
Safety Car
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From: New York
It is custom with a dist gear and fuel pump Lobe (SBC )which the LS cam does not have . And I would suspect you can ask for any grind you want
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From: anchorage ak
Race Director
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From: Millington Illinois
St. Jude Donor '08-'09
EDIT:http://www.powerblocktv.com/episodes...allblock-build Here is the link from above. Just watched it. Accessories is the only questions not answered
Last edited by 63mako; Mar 16, 2014 at 11:17 PM.
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From: anchorage ak
I've seen the intakes as far as the spider, if the hole is in the same place, why would you need a custom cam shaft with provisions for the distributor.
Race Director
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From: Millington Illinois
St. Jude Donor '08-'09
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From: anchorage ak
Mako you'll have to excuse my ignorance, I'm only trying to learn, but other than the distributor gear, fuel pump lobe and 4/7(I think) swap what is the difference in cams, if those were the only differences, couldn't you run a 4/7 swap cam? Thanks in advance as Growing up with the gen one some things about the ls are mysterious to me.
Race Director
Joined: May 2005
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From: Millington Illinois
St. Jude Donor '08-'09
Mako you'll have to excuse my ignorance, I'm only trying to learn, but other than the distributor gear, fuel pump lobe and 4/7(I think) swap what is the difference in cams, if those were the only differences, couldn't you run a 4/7 swap cam? Thanks in advance as Growing up with the gen one some things about the ls are mysterious to me.
Last edited by 63mako; Mar 17, 2014 at 01:38 AM.
Instructor
Joined: Dec 2013
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From: Maui Hawaii
Mako you'll have to excuse my ignorance, I'm only trying to learn, but other than the distributor gear, fuel pump lobe and 4/7(I think) swap what is the difference in cams, if those were the only differences, couldn't you run a 4/7 swap cam? Thanks in advance as Growing up with the gen one some things about the ls are mysterious to me.
This Comp Cam press release explains it better than I can: http://www.theengineshop.com/product...f_file-177.pdf
Camshaft details/requirements also explained in this Super Chevy article: http://www.superchevy.com/technical/...der_heads.html
If you're assembling the Motown LS ( AKA Motown LS Hybrid) engine yourself then you would need to purchase 2 items from BMP to start: the un-machined block and the block kit. Here: http://www.worldcastings.com/product...ron-motown-ls/
Last edited by 82CFI; Mar 17, 2014 at 04:05 AM.
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From: anchorage ak
Cam needs to have LS lobes because it's activating an LS valve train with LS geometry ... something you might expect if you're using LS heads. While an LS cam will slide into the block and work fine it won't have the distributor drive gear in the back and the fuel pump eccentric in the front like a standard SBC setup needs. HENCE, the need for a customized or "enhanced" LS cam where just 2 things have been added: the distributor gear and the mechanical fuel pump eccentric.
This Comp Cam press release explains it better than I can: http://www.theengineshop.com/product...f_file-177.pdf
Camshaft details/requirements also explained in this Super Chevy article: http://www.superchevy.com/technical/...der_heads.html
If you're assembling the Motown LS ( AKA Motown LS Hybrid) engine yourself then you would need to purchase 2 items from BMP to start: the un-machined block and the block kit. Here: http://www.worldcastings.com/product...ron-motown-ls/
Instructor
Joined: Dec 2013
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From: Maui Hawaii
The cam with customized lobe profiles can be ordered by the builder from Comp Cams (CC) in any configuration they want OR order the Hybrid cam matching an existing LS street/race cam that CC stocks. diehrd posted above that Crane is making these LS Hybrid cams too.
Another article explaining the advantages of this Hybrid over an LS engine: http://www.enginelabs.com/features/e...iron-from-pbm/
Yet another great write-up & video on the Hybrid: http://www.lsxtv.com/tech-stories/en...d-ls-combined/
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From: anchorage ak
Yes, because the Hybrid uses the LS firing order (1-8-7-2-6-5-4-3) which is different from the traditional SBC (1-8-4-3-6-5-7-2) requiring the LS cam which has the 4-7 lobes swapped. With an LS style cam installed then simply moving the proper plug wires to the towers in sequence on the distributor cap will complete the firing order change.
The cam with customized lobe profiles can be ordered by the builder from Comp Cams (CC) in any configuration they want OR order the Hybrid cam matching an existing LS street/race cam that CC stocks. diehrd posted above that Crane is making these LS Hybrid cams too.
Another article explaining the advantages of this Hybrid over an LS engine: http://www.enginelabs.com/features/e...iron-from-pbm/
Yet another great write-up & video on the Hybrid: http://www.lsxtv.com/tech-stories/en...d-ls-combined/