Debut of New Ultimate Race Aluminum LS Engine Block by RHS
12-10-2008, 08:27 PM
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Debut of New Ultimate Race Aluminum LS Engine Block by RHS We are happy to announce the arrival of the ultimate race LS engine block!
Available April 2009
Here are the facts:
High-strength A357 – T6
Standard & tall decks
Std 9.240” deck
Tall 9.750" deck
Designed for up to 4.6” stroke
Increase bay-to-bay breathing
Raised cam centerline: .386”/9.86mm, 2 chain links
Std .842 lifters, up to 1.060” lifters possible
6 head bolts
4.060 - 4.165” bores
Gen III / IV compliance
Serious dry sump provisions (built in AN-12 feeds)
Gen I / III / race mounts
Priority main oiling
Ampco 45 cam thrust plate
Rear cover included
Siamese cast bore walls
Press-in spun cast iron liner
4.060 to 4.165 bores
Water jacket based on LS7
Liner lengths:
Std deck: 144/149 mm (same as LS7)
Tall deck: 157/162 mm
Maximum pushrod angularity = less than 2deg
Bay-to-bay breathing improved with increase in window area:
Passage under bores:
Center bulkhead 4% area increase over LS7/LSX
Same window on all cylinders, so 39% increase on #2 and #4 over LS7/LSX
Passage around caps
7% Increase in area over LS7/LSX
All threads 'rolled'
Chilled mains
cast-in piston oil squirter provisions
If you are at PRI, stop by the Comp Cams booth and have a look, we have the first sample block on display.
- Brian
Available April 2009
Here are the facts:
High-strength A357 – T6
Standard & tall decks
Std 9.240” deck
Tall 9.750" deck
Designed for up to 4.6” stroke
Increase bay-to-bay breathing
Raised cam centerline: .386”/9.86mm, 2 chain links
Std .842 lifters, up to 1.060” lifters possible
6 head bolts
4.060 - 4.165” bores
Gen III / IV compliance
Serious dry sump provisions (built in AN-12 feeds)
Gen I / III / race mounts
Priority main oiling
Ampco 45 cam thrust plate
Rear cover included
Siamese cast bore walls
Press-in spun cast iron liner
4.060 to 4.165 bores
Water jacket based on LS7
Liner lengths:
Std deck: 144/149 mm (same as LS7)
Tall deck: 157/162 mm
Maximum pushrod angularity = less than 2deg
Bay-to-bay breathing improved with increase in window area:
Passage under bores:
Center bulkhead 4% area increase over LS7/LSX
Same window on all cylinders, so 39% increase on #2 and #4 over LS7/LSX
Passage around caps
7% Increase in area over LS7/LSX
All threads 'rolled'
Chilled mains
cast-in piston oil squirter provisions
If you are at PRI, stop by the Comp Cams booth and have a look, we have the first sample block on display.
- Brian
Last edited by horsepower; 12-10-2008 at 09:15 PM.
12-11-2008, 12:20 AM
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Can I be the first guy that posts "Will this work in my stock 98 camaro z28? Will this work with stock heads and a GM LS1 Hot Cam? Does this need any modifications to bolt in. Should I upgrade to an LS6 intake with this block?"
jussstt kidding...awesome block. This is going to again raise the bar on the highest end Lsx motors headed toward Pro-Mod power...
jussstt kidding...awesome block. This is going to again raise the bar on the highest end Lsx motors headed toward Pro-Mod power...
12-11-2008, 12:39 AM
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Can I be the first guy that posts "Will this work in my stock 98 camaro z28? Will this work with stock heads and a GM LS1 Hot Cam? Does this need any modifications to bolt in. Should I upgrade to an LS6 intake with this block?"
jussstt kidding...awesome block. This is going to again raise the bar on the highest end Lsx motors headed toward Pro-Mod power...
jussstt kidding...awesome block. This is going to again raise the bar on the highest end Lsx motors headed toward Pro-Mod power...
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12-11-2008, 12:40 PM
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