Could have had a v-8

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Could have had a v-8

Postby dindin » Fri Oct 23, 2015 3:05 pm

pontiac-tempest-lemans-sedan-1962-2.jpg
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pontiac-tempest-lemans-sedan-1962-3.jpg
pontiac-tempest-lemans-sedan-1962-3.jpg (214.93 KiB) Viewed 457 times


Al
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Re: Could have had a v-8

Postby bugdewde » Fri Oct 23, 2015 7:14 pm

1/2 of a Pontiac 389.

The GM corporate Iron Duke 151 shares many parts of the Pontiac 301. Rumors used to say it was also 1/2 of the 301.
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Re: Could have had a v-8

Postby bugdewde » Fri Oct 23, 2015 8:24 pm

Just an FYI on that 1/2 of a 389 V8. Since it didn't have a counter balanced crank/balancer.... the HUGE 195 cubic inch 4-banger utilized a rear mounted transaxle like the newer 'Vettes. The prop shaft (driveshaft) that ran from the engine to the transaxle was inside a "torque tube"... also similar to newer 'Vette structural design. The prop shaft literally sagged down inside the torque tube. It was to act as a balancer and remove the tremendous vibration the monstrous, unbalanced 4-banger produced.

Image

It shared some components of the already in production Corvair transaxle.... if I remember correctly.


Here's an article where they adapted a turbo charged Corvair engine to the rear of the Tempest transaxle......
HUGE powerful 4-banger up front and an turbocharged 6-banger in the rear..... cool.
http://www.curbsideclassic.com/blog/wha ... win-drive/
They even theorize on using the Buick V6, 215 V8, as well as the Olds turbocharged 215 V8 Jetfire.... and a 326 up front.



...............
Front engine with a Corvair engine added to the rear transaxle.

Image
Dwight

'73 Vega GT Hatchback, mostly stock....
'72 Vega GT Kammback, 215 V8
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Re: Could have had a v-8

Postby bugdewde » Fri Oct 23, 2015 8:58 pm

Image

Image

Image
Dwight

'73 Vega GT Hatchback, mostly stock....
'72 Vega GT Kammback, 215 V8
'73 Vega Wagon - Currently in Limbo....
My rides: http://www.cardomain.com/id/bugdewde
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Re: Could have had a v-8

Postby bugdewde » Fri Oct 23, 2015 9:01 pm

Could have had a V-8............
Yep. See blue circle and arrow.
61s TEMPEST MOTOR LIFE COVER.JPG
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Dwight

'73 Vega GT Hatchback, mostly stock....
'72 Vega GT Kammback, 215 V8
'73 Vega Wagon - Currently in Limbo....
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Re: Could have had a v-8

Postby rpoz-29 » Sat Oct 24, 2015 9:11 am

I had one in a Tempest. It was given to me by a buddy. I never put it on the street, but when I sold it,(for what I had in it), I drove it to the buyers home. It pulled like an inline six of the era. The guy I got it from had a 4bbl intake for it.
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Re: Could have had a v-8

Postby dindin » Sat Oct 24, 2015 9:16 am

Thanks Dwight, I never had a clue about the tempest being so innovative, or having the v-8. :th:

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Re: Could have had a v-8

Postby HI WINDING MONZA » Sun Oct 25, 2015 6:22 pm

Nunzi's answer................................

https://www.youtube.com/watch?v=b1Th2JG4h9g

https://www.youtube.com/watch?v=zYkb542laiM


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Re: Could have had a v-8

Postby BadBowtie » Sun Oct 25, 2015 10:53 pm

James

1975 Vega GT 350 sbc, STR10 crossram w/dual 390CFM Holleys, M21 4-speed, Hurst shifter and ford 9"
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Re: Could have had a v-8

Postby dindin » Mon Oct 26, 2015 9:49 am

That is one heavy duty looking motor!! Prolly pretty rare also.

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Re: Could have had a v-8

Postby cammerjeff » Mon Oct 26, 2015 10:21 am

They were actually Very innovative, but the Corvair based transaxle was its weak point. They were actually not very good street cars, but great race cars. I drove a High compression 4 cylinder 4bbl with a 3 speed manual once, I was considering buying it, but the big 4 cylinder with 1950's technology was to rough for me, it was way to easy to get the entire drivetrain surging with a non aggressive 1-2 or 2-3 shift. The car was a 1962 Convertible and when the drivetrain started surging the cowl shake was scary!!!!!
They did but the Aluminum Buick 215 V-8 in them in 61 and 62, but they sold very few, and after seeing the modifications required to put in the 215 I can see why. The standard Tempest with the slant 4 is a rear steer car (I could have this backwards but the issue is the same) and the 215 V-8 cars are front steer, that means that the entire front end geometry is different between the cars powered by different engines. I can't imagine the production line was set up to build many of the V-8 cars.
For 1963 they dropped the 215 Buick, and offered a small bore version of the standard Pontiac V-8 advertised as a 326 but actually a 336 CI engine (330 was GM's internal size limit for the compact cars at the time, the 336 engine was a still born design that was to be used for an optional GMC truck engine for the 1960 model year, GMC decided to not use it, but the engineering and tooling was already available so to save time it was used, and advertised as a 326. In 1964 an actual 326 CI engine debuted in the more conventional Tempest/Lemans that came out that year.)
They also built a very few SD421 Powered Coupes and wagons for Drag and road Racing. Here are a few shots of my favorate 61-63 cars. The 1st 2 show a SD421 Powered Tempest passing a off brand GTO & a couple of corvette's on the high banks of Daytona on its way to Victory, the race was held on 1/2 the oval and the infield course. And the last one is of a Rail powered by 2 195 I-4's named 8 the hard way.
Attachments
tempest5-400x311.jpg
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tempest41.jpg
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8 the Hard Way twin Slant 4 Pontiac Rail.jpg
8 the Hard Way twin Slant 4 Pontiac Rail.jpg (56.58 KiB) Viewed 369 times
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78 Sunbird Safari Wagon, 3.8 N/A, 1971 Catalina Freeway Enforcer
77 Astre Formula, some day soon powered by a 215 Buick V-8
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Re: Could have had a v-8

Postby Sunula66 » Thu Oct 29, 2015 11:51 am

Thanks for this really kool thread :th:
Pontiac was innovative in so many ways and sadly they were turfed ...but never forgotten! 8)
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Re: Could have had a v-8

Postby cammerjeff » Tue Nov 10, 2015 2:21 pm

Vintage Motorsport magazine has a great 2 part article called Tempest in a teapot in the Jul/Aug & Sep/Oct issues on the entire 4 race history of the 62/63 Tempests. It is 2 recent for me to post but I can send a PDf to anyone interested, just PM your E-mail address to me. I found out quite a bit I didn't know today reading it.
Jeff R

78 Sunbird Safari Wagon, 3.8 N/A, 1971 Catalina Freeway Enforcer
77 Astre Formula, some day soon powered by a 215 Buick V-8
1973 4-speed Lemans Safari STOCK!!!!! 1978 Catalina Safari
1971 Lemans Safari/GTO Clone, 1969 Firebird Sprint 301 ci OHC6, T-5, 4.10 12 bolt posi
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