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Howdy,
After watching "Dukes of Hazzard" (again) I keep waking up in a cold sweat dreaming about a Hemi in the old HG ute. Anyway, the divorce would be more expensive than the big Hemi, so does anyone know how hard it is to put one of the Aussie Hemi 6's in the HG? I've heard they're longer than the red motors but will they fit without cutting her? The idea (an idea only at the moment) was to put a Hemi 6 in built to run on gas only (high compression etc blown one-day? - & thanks little johnny). Get the power of my stockish 308 with the rego of a six? Would also annoy a few people too, which is always fun. Ideas?
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Should fit straight in as they both have centre sump humps. Goeff Dellow and Castlemaine Rod shop have adapters for most gearboxes to suit these engines, but if you are going auto do some quick measurements on an original Valiant torqueflite as it may be |
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I have put Hemis into earlier valiant's (which had very short engine bays). I removed the Hemi fan & spacer & used twin thermo fans in front of the radiator.
Byron is right about the centre hump sump so as long as you have a Hemi out of a Valiant (not |
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So 300hp from a naturally aspirated 245/265 set up for gas would not be an unrealistic goal then? Off the top of your head how many horses does a standard 308 have - was it 290 or am I thinking of something else? When you say cut & shut the mounts, do yo
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P.S. The slant motors aren't Hemi's, are they? I've also heard they're a bit of a rattly pig (& difficult to fit). Does anyone know if a 265 could be mated to a holden v8 3spd...? Unusual, I know, but there's a bigger picture in mind.
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No they are not true hemis and don't have a hemispherical combuster chamber. Chrysler Australia just used the "Hemi" name to make them sound more impressive and hopefully sell a few more.
I am just wondering what you have to gain by using one of them
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BrianH has a good point, but a stock 265 Hemi will outrun a stock red 308. Two other options to consider are a Chev straight six which uses a Chev bellhousing pattern so a Chev to Aussie 4speed bellhousing will do the job to connect to your 3speed. It sho |
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All of the above are good points. You could use one of those red Chevy 6's for a real sleeper appearance & as they have the chev V8 bellhousing pattern the Holden 3 speed would not be hard to adapt. To answer your question about adapting the Hemi to Edited by user Thursday, 31 August 2006 9:31:40 PM(UTC)
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Oh & I forgot to mention that the reason why a 265 will give a 308 a good run is because the 308's factory HP rating was a little optimistic at best. I remember reading an article in a 1970's motoring magazine where they put a 308 engine on a dyno & then |
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I remember a Motor magazine article in around 1978 comparing the Sandman, Drifter and Sundowner. Whilst the 308 4-speed Sandman ended up the winner it was mostly because of the RTS. The XC Sundowner was a 302 and was reported to 'run like a chaff cutter a |
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A lot of buggering around if it's not a real Hemi, then hey! Just looking to cheat the govt out of some rego money while having the same power & make people wonder. I've got a chev positrac at the back so I though a Valiant motor up front & all I'd need t
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If you ever want to sell the 12-bolt positraction in the HG let me know. I'm looking for a housing and axles for my HK 427 project. |
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I guess that depends on what you'd be offering - everyone has a price! I've heard they're uncommon, & the Holden ones have a different housing to the camaro ones, so they're rarer again. It was out of a Bathurst Edition HK (!) & had apparently been re-con
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i'm in no rush, so if ever keep me in mind. What ratio is it? I think they started at 3.55:1 and went lower in ratio from there. I have a heap of Impala sixed 12-bolts for donor centres that is the reason for just needing the housing and axles. The 12-bol |
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Not exactly sure on ratio. My mate suggested it was 3.36 or 3.55. I'll keep you in mind should I want to sell it.
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If it's a 3.36 and an original HK-HG unit it won't be a 12-bolt positraction. It will probably be a 10-bolt. |
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After reading your post I went & counted the bolts - there's only 10! So does this mean it's not a Posi-trac? It's LSD & definitley not a Banjo & I'm very sure it's not a Salisbury...so what do you reckon it is? It's got a rear cover-plate with a raised s
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The 10-bolt and 12-bolt moniker refers to the bolts that hold the crownwheel onto the diff centre, not the cover. IIRC the HK-HG 10 and 12-bolts both have the hump to clear the crownwheel, and both have the side drain plug. They are both Salisbury style d |
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Are there any places on it where a part number could ID it as a 10 bolt or 12, without taking the rear cover off it?
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