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fullboost
25-01-07, 12:51 PM
http://www.procharger.com/images/Nova.jpg

Built with help from Super Chevy Magazine to demonstrate the potential of a carbureted, centrifugally blown engine using 91 Octane pump gas and off the shelf parts, this 3,300 lb. car has far exceeded expectations, evolving into an extreme example. This particular 427 ci combination is the product of lb/ci rules observed in heads up racing. When rules aren’t a factor, this level of power is more commonly produced using a 502 based engine, often times using higher octane fuels. This engine makes well over 3 hp/ci with an Air to Water intercooled F-2 ProCharger breathing 28 psi of boost through a pair of lightly modified 450 Holley carbs. Extreme ProCharged applications running racing fuel are currently making in excess of 5 hp/ci, propelling cars to speeds well in excess of 210 mph. ATI does not recommend duplicating this Nova’s particular combination, as there are easier ways to achieve these same power levels. Please contact our technical service staff to determine a combination that best meets the needs of your particular application.

http://www.procharger.com/images/nova.uh.single.jpg

1969 Super Chevy Nova, Config. 1
427 cid, Production Block and Crankshaft
GMPP Rect. Port Heads, Solid Roller Cam, 7800 RPM
Single Carburetor, 91 Octane, 3400 lbs
F-2 ProCharger, Serpentine Drive, 3 Core Race Intercooler
24 psi, 1275 HP, 158% HP Gain
3 HP/ci on Pump Gas



http://www.procharger.com/images/nova.uh.double.jpg

1969 Super Chevy Nova, Config. 2

427 cid, Production Block and Crankshaft
GMPP Rect. Port Heads, Solid Roller Cam, 7800 RPM
2 450 Holley Carburetors, 91 Octane, 3400 lbs
F-2 ProCharger, Cog Drive, 1800 hp A/W
28 psi, 1495 HP, 203% HP Gain
3.5 HP/ci on Pump Gas

The Gronk
25-01-07, 07:42 PM
91 octane is 'pump gas' in the USA is it? or did they just want to prove it could be done on run of the mill no additive unleaded stuff?

would be good to see what some of the big hp 'pump gas' jap cars make in comparrison.... nothing beats blown cubes but ;)

morerevsm3
25-01-07, 09:15 PM
91 octane is 'pump gas' in the USA is it? or did they just want to prove it could be done on run of the mill no additive unleaded stuff?

would be good to see what some of the big hp 'pump gas' jap cars make in comparrison.... nothing beats blown cubes but ;)
thier 91 is RON/MON, so is about the same as what we would call 96 octane (RON)

The Gronk
25-01-07, 09:16 PM
ah so its 91 motor octane, not 91 research octane.. I CCCCCC

fullboost
26-01-07, 11:43 AM
Yeah they have a few different grades. Most gas places I've seen there sell 87, 89, 91 and 93 octane but yes it's measured differently to ours.

Luke

morerevsm3
26-01-07, 12:30 PM
their 93 is the same stuff as what we call 98 octane

pfer10
26-01-07, 03:55 PM
Maybe this?

http://www.youtube.com/watch?v=YtxfbxGz1u4&mode=related&search=