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quote:
Originally posted by Dr Terry
Yeah, but a BB 454 LS7 would be the better option.
Dr Terry
Agree, although it was never a production engine, just a spare part so I doubt GMH would have been allowed to fit it. You'd have to make do with an L88 427 which in final guise is pretty close in spec to the LS7. I have a pair of LS7 heads at home and they are all but the same vital specs as the last of the L88 alloy heads, just slightly bigger ports on the LS7 iron heads. How about a 455 Olds engine instead? |
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How about an LS6 then ?
Yeah, great engine the BBC, I also have a pair of LS7 heads at work, brand new unused, flowed to 800 hp naturally aspirated. One day they will find a home in a nice engine bay, somewhere.
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The good LS6 with 450hp SAE gross was 1970. By the time HQ was released it dropped back to about 435hp but probably by the time you'd get to run Nick's wish you'd only have the 1972 spec LS5 available which was 275hp SAE net.
If you wanted any of the 4 x "goodie" engines of the time you'd probably have to use a HT or HG:
1969 Z28 302
1970 Z28 LT1 350
1969 ZL1 427 (or the L72 or L88 versions)
1970 LS6 454.
Ben did basically this with his rare 307 manual HT GTS, fitted an authentic 1968 Z28 engine to it. |
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Hi all,
Two thoughts, Start with an LH Torana to avoid ADR27A, UC front end and rear floor pan, A9X diff with discs, larger front discs, HQ stud pattern. Pontiac 15" rims.I also fitted the UC handbrake which I like better than the LH foot operated one. I did cheat and use a stroker and T5, not exactly period but it does go, stop and unlike LH's it does corner thanks to RTS. I have had it engineered to be able to run 10" rims on the rear and the process was easy because of the use of parts and techniques used by Holden in similar cars.
The other project is a HQ coupe, again four wheel discs and RTS. HZ dash as I prefer it, other than the LS/Prem front it is original externally, why mess with the looks of something that Holden got right. Running gear is again not period with a VT roller cam 5.7 Holden (not Chev) engine and 4 speed auto. I will have to get the later engine and fuel system etc approval but engineer can see no problems with that.(NSW)
What I am trying to do with my toys was very similar to the idea from Joe Kenwright but I couldn't help but stray a bit from the original idea when it came to engines and transmissions.
Regards Col |
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Yes Col Byron, Terry and all. I liked Joe Kenwright's philosophy of using the parts bin of the day and given that Holden did access Global GM parts to make some of the Aussie Mongrels.. the scope is huge. We built some really fantastic and different cars back in the day and with a little more license we would have had the meanest musclecars in the world.
Ok here is another (stretching a little but I believe the this car was actually hand made and then trashed). An HR two door coupe' running a 283 or 307 chev. If it was pillarless I reckon it would have been another icon?
Cheers Nick.
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How about an FC with 283 fuel injected with 4 speed and 12 bolt diff.
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GM had the T10 at that time but did they have a 12 bolt? You could opt for a fraction more power and fit the 283 with twin Carter 4BBL's! |
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quote:
Originally posted by Silverfox
Ok here is another (stretching a little but I believe the this car was actually hand made and then trashed). An HR two door coupe' running a 283 or 307 chev. If it was pillarless I reckon it would have been another icon?
Cheers Nick.
While it is likely that GM-H had 283 V8s running around in HR mules, it was probably too early for a 307 (1968 was its first year in the USA). Also I believe that the HR coupe was never more than a concept drawing. Maybe others on the forum know more about that. Dr Terry |
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quote:
Originally posted by HK1837
GM had the T10 at that time but did they have a 12 bolt? You could opt for a fraction more power and fit the 283 with twin Carter 4BBL's!
Yeah, the T10 was introduced in 1956 but the 12-bolt wasn't seen in passenger cars until 1964. Even though the FI engine wasn't as reliable as the twin 4 bbl carby set-up, didn't it produce slightly more power ? It was advertised as the first motor to achieve 1 HP per cubic inch. Dr Terry |
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You might be right Terry for the 283 engines from 1957-1961 (275hp or 315hp). It was the 1962-5 327's that had it that were down 10hp on the high performance single 4BBL 327 according to the HP books How to Hotrod SBC's. |
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Thanks Terry.
I have thought for years that they actually made one HR coupe prototype.
Nick
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How about a HT 350, 4 speed, 10 bolt, A/C, P/S, bucket seats and full electrics, 2 door sports wagon SS?
Of course make the 396ci, 12 bolt a low cost upgrade along with leather interior?
All were available in the GM world of 1969....
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Sounds very cool except it wouldn't be an SS in 1969, that was a 4 door sports sedan in GMH world! |
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quote:
Originally posted by HK1837
Sounds very cool except it wouldn't be an SS in 1969, that was a 4 door sports sedan in GMH world!
I beg to differ - the rather popular 1969 Impala SS coupe wasn't a 4-door sedan..... and you could also get the SS as a convertible - even further removed from a 4-door sedan. "SS" in the '60s was considered more "Super Sports" than "Sports Sedan" - thus a 2-door "Sport-Wagon" wearing an SS emblem would most certainly have been possible. What prompted my reply was my brother-in-law once owned a gold '62 Impala SS 327/powerglide coupe - that certainly wasn't a sedan, but it was an SS coupe, so I did a little more hunting through my photos from the last Chev club rally & found the '69 427 SS Coupe amongst my pics. |
Cheers,
Mick
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I meant in GMH not GM. The SS was to be the sports sedan, ie HQ SS, and was what they had in store for the 4 door which became the GTS sedan. I'm pretty sure that would have been on the drawing board as an SS in 1970 |
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75 years of Chevrolet book lists the first use of the 283 motor was 1957. It lists 2 dual 4 barrel motors, 1 with hydraulic lifters with 245 HP and with solids at 270 HP. The FI was hyd 250 HP and solids 283 HP. In 1956 you could order the new 354 ci Chrysler motor with 355 HP thus discrediting the claim that Chevrolet was the first with a horse poer per inch engine.
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How this. a Richthofen V8 HB Torana 327
The south Africans had a 350 torana thing much like our LC it was mainly.
Not my thing but nasty.
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quote:
Originally posted by castellan
How this. a Richthofen V8 HB Torana 327
The south Africans had a 350 torana thing much like our LC it was mainly.
Not my thing but nasty.
A Chev Small Block in an HB Torana would be nasty. The SA Chev Firenza you speak of, used an HC Viva body, but had a 302 Chev, Muncie 4-sp & was the king of their touring car racing for several years. Dr Terry |
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quote:
Originally posted by bazza30555
In 1956 you could order the new 354 ci Chrysler motor with 355 HP thus discrediting the claim that Chevrolet was the first with a horse poer per inch engine.
You are correct of course, that's why I used the term 'advertised as'. Dr Terry |
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Someones perfect Holden, a must see video, bloody awesome is all I can say. http://www.youtube.com/watch?v=3FiCjPK0BqA |
j.williams |
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