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Has anyone got a pic of the correct inlet for a late (Jan '78) 4.2 LX Torana? and or some general engine bay area. I'm putting the engine together for a mate, but the engine was incomplete and missing some parts.
Thanks,
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Originally Posted by: Todds2  Has anyone got a pic of the correct inlet for a late (Jan '78) 4.2 LX Torana? and or some general engine bay area. I'm putting the engine together for a mate, but the engine was incomplete and missing some parts.
Thanks, should be something like this (although I am not sure about the sensor next to the thermostat, think that is a Holden one)  but personally? I would grab a red motor 4BBL 308 inlet manifold (HZ or LX style) and whack a 4BBl Quaddie on it (like they did on the blue XT5 253/4.2 engine in WB and VC) rather than the 2BBL bit of junk Holden put on the 4.2. Yeah I know its not genuine.. but you get a better engine  Edited by user Tuesday, 19 August 2025 9:05:17 AM(UTC)
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Thanks Smitty2, but the heads on this have the horseshoe exhaust passage in the center, so I assume an EGR valve on an after '76 model. I have seen manifolds with the passage that have a narrow ridge along the side and also one with a 'Log' along the side so thought it would be one of those.
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Originally Posted by: Todds2 Thanks Smitty2, but the heads on this have the horseshoe exhaust passage in the center, so I assume an EGR valve on an after '76 model. I have seen manifolds with the passage that have a narrow ridge along the side and also one with a 'Log' along the side so thought it would be one of those. one of these ...??  |
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Could be, but could it also be one of these? https://www.fastlane.com...resource.ashx?image=1191Edited by user Tuesday, 19 August 2025 9:39:33 PM(UTC)
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The first one Smitty put up is HT-HG although it’s been drilled for cable throttle (LH, HJ, early LX).
The second one is HZ, VB and really late LX.
There is one in between, HX and middle LX, has big barrels down the sides of the intake pots.
Best bet is grab a HZ, VB or late LX (A9X) 5.0L intake and a Quadrajet off a blue 4.2. Or get a KC 4BBL intake (fits all carby Holden V8) or a Edelbrock Performer. There are also really cheap Chinese knockoffs too but my guess is they won’t fit tight. |
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Thanks for that, unfortunately the owner would like it to retain stock appearance, but I'm sure the right combination (and it is an Auto) will be acceptable. The pic I tried to put up must be the middle one with the barrels, so it looks like number two it is. Thanks again for the help guys I'll keep looking for some pics of the engine bay.
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It’ll look stock with a 5.0L carby and intake. |
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Originally Posted by: HK1837 The second one is HZ, VB and really late LX.
There is one in between, HX and middle LX, has big barrels down the sides of the intake pots. When was the change Byron. Was it right at HZ release ? Dr Terry |
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It’ll be close to HZ engine production beginning Terry, around when the pilots started. Possibly like the chassis changes. |
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