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26 Dec 2008, 23:44 (Ref:2361329) | #1 | ||
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Join Date: Feb 1999
Posts: 2,725
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Holden V8 Supercar engine
Question for the more technically minded. I know the Ford 5.0 is the SVO engine which descended from the Windsor 335 but what is the Holden V8 Supercar motor?
It's described in the manual as a Chevrolet Aurora, but as far as I can tell there ain't no such animal. The Aurora engine is a 4.0 Oldsmobile motor and I'm fairly sure is not the same engine. I also remember a Holden spin doctor at the time telling me that it was not actually an Aurora and I shouldn't call it that. Anybody help me out here? |
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Mark Alan Jones Opinionated Human My opinions only have the power you give them |
27 Dec 2008, 11:26 (Ref:2361430) | #2 | ||
Racer
Join Date: Dec 2008
Posts: 165
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a holden supercar engine is just a small block chev which has descended from a 350 and the aurora is just the code name holden have named the engine.
hope this helps you out |
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27 Dec 2008, 18:53 (Ref:2361581) | #3 | ||
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Join Date: Dec 2006
Posts: 968
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Quote:
The CNC machined SB Short Deck Bowtie block [Part # GM 24502650] has a nominal deck height of 8.325” and can be further decked to 8.125. It is designed for small cubic inch engines used for drag racing, road racing and restricted oval track racing. The factory bore is 3.984” and can be bored up to 4.190” with a minimal wall thickness of 0.250”. The camshaft tunnel is raised to 4.953” and the main oil gallery relocated from above the camshaft to the side of the cam. The water pump holes are spread and a big block water pump must be used. When using a 6” or larger damper, the pump must be raised using aluminum adapters. With the shorter deck, the pushrods must be shorter to work with the cam and lifters being used. The main bearings are small journal 2.300” not the standard 2.450”. The cam bearing holes are bore for roller cam bearings at 2.250” diameter O.D. x 1.875” I.D. This block features five steel main caps with the three center caps splayed 20 degrees. This block uses the Oldsmobile Aurora V8 bell housing with a maximum of 12.25” flywheel diameter. Designed for dry sump oiling, the oil filter boss is a machined pad for a remote oil filter. I am given to understand that Caterpiller cast the limited run "Short Deck" for both GM and Holden with appropriate cast identification marks. I trust the above dispels the many myths that surround the engines origins. Cheers, Mark Petch. |
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28 Dec 2008, 01:41 (Ref:2361684) | #4 | |||
Racer
Join Date: Aug 2004
Posts: 389
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Quote:
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28 Dec 2008, 07:48 (Ref:2361731) | #5 | ||
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Join Date: May 2005
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Quote:
Holden rebranded the name from (its internal designation) 'Aurora' to HMS. It has heads/cylinders that do away with the previous GM siamesed bore configuration and is similar to the evenly spaced Ford unit in that regard. The (Olds) Aurora engine is an entirely different configuration. DOHC 4.0 V8, which was raced in Indycar. The two engines should not be confused. |
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