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Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
http://farm4.static.flickr.com/3433/...12a056e7_b.jpg
http://farm4.static.flickr.com/3548/...f01e38c6_o.jpg http://farm4.static.flickr.com/3566/...0c8dfa17_o.jpg http://farm4.static.flickr.com/3437/...472a27e3_o.jpg http://farm4.static.flickr.com/3603/...6481613f_o.jpg He bought it not knowing what it was, but eventually figured out it may have been one of the test engines for the 4.3 Turbo v6 idea GM had for the ZR-1. He was going to stuff it into another car, but it just sits in his garage for the past 3 years. Figured you guys would be interested in it ... so I snatched up all the pics he sent me awhile back. I just remembered it lastnight :) --- |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
http://farm4.static.flickr.com/3577/...e0b69b22_o.jpg
http://farm4.static.flickr.com/3575/...7392b216_o.jpg http://farm4.static.flickr.com/3433/...4ab2e895_o.jpg http://farm4.static.flickr.com/3650/...c2f367c3_o.jpg http://farm4.static.flickr.com/3578/...330dc3d3_o.jpg http://farm4.static.flickr.com/3437/...7eb6939b_o.jpg |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
http://farm4.static.flickr.com/3547/...96d757f6_o.jpg
http://farm4.static.flickr.com/3470/...c1247a58_o.jpg Some marking on the turbo. http://farm4.static.flickr.com/3419/...5d40de77_o.jpg Some markings on the IC. http://farm4.static.flickr.com/3627/...bfd26b3b_o.jpg http://farm4.static.flickr.com/3601/...ddd18ae7_o.jpg |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
http://farm4.static.flickr.com/3627/...194e3cf269.jpg
These might give you guys some ideas for making some log manifolds. http://farm4.static.flickr.com/3585/...3cc61cb3_b.jpg http://farm4.static.flickr.com/3603/...96eb6e55_b.jpg I found 2 oil pressure units. One for a gauge & one for an idiot light? http://farm4.static.flickr.com/3580/...2c2a2952_b.jpg http://farm4.static.flickr.com/3638/...b06b2a34_b.jpg |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Well the top plenum is very L-98ish however it looks like a cross between a Buick. GC
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
He contacted the SVI people , they gave him the first pic I posted. They verified that they were building these engines for a Corvette prototype. The turbo lag and the engine shaking of the unbalanced 4.3 was too much hassle for GM to approve the design. Im not sure if it was ZR-1 specific though ... but the year "1987" seems feasible.
He originally bought it thinking it was a SYCLONE/TYPHOON prototype engine , but its too big to fit in the s15 body --- |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Im thinking this might have been a bad marriage between GM and the Buick Grand National Program or Turbo Regal V6 Arena. Turbo is in the right spot however the intake is way off hence the marraige comment (More like a shotgun wedding here)
Time period is also about right. Who knows what evil lurks in the hearts of prototype engineers. |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
It may have been for a Corvette prototype but not for a ZR-1. There was no indication in The Heart of The Beast that there was ever a consideration for a T-V6 in the ZR-1 that I remember.
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
I thought I read somewhere that the turbo v6 was an option ... when they were shooting for 400hp ... but people really took it hard that it wasn't a v8 for the "top of the line" Corvette (zr-1) , so that's another reason it was squashed ? ---
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Looks like a camaro engine block? 1987 fits in with a potential turbo upgrade??
Great find!!!! :cheers: David |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
I did hear about a 3rd gen Camaro turbo 6 concept also ---
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Cool looking setup for sure. I wonder if the V6 +turbo + I/C + plumbing would be close to the weight of an L98 or the ehavier LT5?
Could V8 manifolds be swapped out to be used in a V8 application? It would be interesting to get a readout of that PROM. peace Hog |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
The flange on the headers is what 0.750 in ? wow
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Quote:
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
A turbocharged V6 was never, ever considered as power for the ZR-1.
Way back in late 85, when what would become the ZR-1 was still in the early design stage, GM briefly considered a DOHC cylinder head conversion for the existing Gen 1 SBV8, but that's the only other engine configuration which was considered. That said, keep in mind that before the idea of a Corvette worthy of the term "world-class sports car" (ie: more than just a "bigger" engine but a complete package of powertrain, chassis and brakes), in late-84/early-85, GM was looking for an engine capable of more more than 230-hp, a twin-turbo V6 was tested and quickly rejected. |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
SVI did a prototype TT Corvette(v8) in 85 or 86. GM used this prototype to work with Callaway in putting the TT into production.
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Quote:
Graham. |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Before landing on the LT-5 vs a TT setup, GM did build a series of TT cars....Motor trend noted that they ran a test with a Lambo running at 120, as it passed one of the TT prototypes(sitting still) ...Jim Engles punched it....at the end of the mile the TT vette has passed the lambo at 180+....
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Quote:
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Interesting the ConsumerGuide published in 12/88 mentioned the turbo 6 was a test engine for the ZR-1; as stated too rough
Quote:
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
;) ---
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Quote:
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Quote:
I am pretty sure the ZR-1 was always LT5 powered from day 1. This may or may not have been a "study" for the Corvette but not a ZR-1. The ZR-1 was an "option and Marketing group" that group included the LT-5 like the Z28 camaro's had 302s. You couldn't get a Z28 with a 396. If it is a Corvette powertrain it could be related to the program that build EX5273 in 1988. EX5273 was a twin turbo V8 concept study. It sold at BJ2009 Palm Beach: http://www.barrett-jackson.com/appli...s.aspx?ln=57.1 http://www.syreal.com/1988_turbo.jpg |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
OK I went digging. Per Dave MCcLellan's "Corvette fron the Inside" page 195:
"V-6S AND TWIN TURBOS To his credit, Lloyd kept the pressure on the engine guys. Their first response was a turbocharged 90-degree V-6 for the Corvette. They reasoned that the smaller displacement was needed, both for fuel economy and to accommodate the turbochargers and auxiliary plumbing. But we rejected the V-6 engine, and so did the car. The engine caused problems in the driveline and rear suspension and made the car buzz and the mirrors shake. This unbalanced V-6 engine configuration was totally unacceptable when mounted in the Corvette, which had never been designed for such an engine. So, the engine guys finally got the V-6 out of their system, and we settled down to work with them to package a twin turbo V-8." http://www.syreal.com/Mclellan_turbo_page_sm.jpg If that is the engine that is a very rare piece of Corvette history. Thanks for posting it. |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
I will go one step further and say the name "ZR-1" didn't really exist until the 1988 time frame. Up until that point the LT5 moniker ruled the day. If you look at the 1988 and earlier build sheets you see LT5 hand written on them and King of Hill noted but no ZR-1 anywhere. ZR-1 really came to fame when Chevrolet denied the use of the LT-5 badging due to GM's own new restrictions on noting engine's badging on the outside of the vehicle. Hmmm does that make Queenie just another Corvette? I will let Tyler decide.
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
This is the prototype Corvette turbo 6....Callaway just posted a pic of it in the car on Facebook
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Saw one a many years ago at Watkins Glen,it was in a prototype road racer.I think it was around 90-91.It caught my eye because I had just bought my first gmc syclone new.
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
That motor looks like a Big Block with 2 cylinders lopped off.
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Thats why it caught my eye,it was the first 4.3 I saw with splayed valve heads.I talked to the owner,he said that they changed it from even fire to odd fire by changing the crank,ignition and electronics.When I heard it go by it was turning some awesome rpm.Way more than an even fire is capable of.If you think an even fire 4.3 runs ruff,an odd fire idles like a washer machine with one leg missing.
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Perhaps a prototype mid engine for a mid engine corvette ???
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
I know this is an ages old thread and I know I've posted to it before but I just noted a small detail in those images.
There is a part dated "MY87". That rules that engine out as having any association with any Corvette development program that is pre-ZR-1. By 1987 the ZR-1 development was way, way past considering any other engine. |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Reeves Callaway would know what engine this is...Callaway had a pic on their facebook page
https://www.facebook.com/25478154717...type=1&theater |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
The story is posted there also...
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Looks like the V6 TTs were abandoned after they did not meet the cut on HP...same output of NA V8s
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
It maybe the engine they put in the transam....v-6 turbo i believe it was late 80's
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
So cool! Looks like they married a big block head to the 4.3 v6! That's awesome
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Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Quote:
The splay-valve V6-90 head was a clean-sheet-of-paper, racing part, released back in the '88-'90 period for the V6-90, which, back then, was popular in a number of racing series. While it mimicked the Big-Block's splay-valve layout, it departed from the BBC design in that the valve configuration was equally-spaced (E-I-E-I-E-I) whereas the BBC (and the Gen 1-2 SBC) were E-I-I-E-E-I-I-E and the production 4.3 was (E-I-E-I-I-E). I noted that the image of the top of the head with the rocker cover off also showed a CN with an "X" in it which means the part was "experimental". That's a clue that the heads were a development piece at the time the images of the engine in a C4 were taken. Later examples of that head, i.e.: parts off production tooling, have only the PN and not the CN with the "X". There were several versions of that head, apparently, because I've seen them with PN 10134384, as well as, PN 14044841 shown in the imagery in this thread. |
Re: Is this a v6 Turbo ZR-1 Prototype Engine? Friend purchased it (pics) ---
Cool stuff Nathan
Dave |
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