EFI, Alpha-N vs Speed Density fueling Strategies

Tony Curcio · 03-13-2014, 10:56 PM

Direct injection is being used this year by the Chevrolet factory teams at LeMans in their GT-1 Corvettes. There is a detailed story about it Engine Technology magazine, a British publication. If anyone's interested, PM me and I'll look for the back issue.

Also, USAC midgets use 4cyl engines with a 23 degree SBC head. They use a nozzle in the intake manifold, and drill a hole from the exhaust side of the head, into the intake port pocket, and call it a "down-nozzle". Every GM powered car in the class seems to do this. Kinzler does the drilling, and provides the the injection system, which looks like old mechanical Hilborns, but are fairly sophisticated electronic controlled units.

03-13-2014, 10:56 PM	#23
Tony Curcio Member Join Date: Mar 2002 Location: West Chester, PA Posts: 271 Likes: 1 Liked 4 Times in 1 Post	Re: EFI, Alpha-N vs Speed Density fueling Strategies Direct injection is being used this year by the Chevrolet factory teams at LeMans in their GT-1 Corvettes. There is a detailed story about it Engine Technology magazine, a British publication. If anyone's interested, PM me and I'll look for the back issue. Also, USAC midgets use 4cyl engines with a 23 degree SBC head. They use a nozzle in the intake manifold, and drill a hole from the exhaust side of the head, into the intake port pocket, and call it a "down-nozzle". Every GM powered car in the class seems to do this. Kinzler does the drilling, and provides the the injection system, which looks like old mechanical Hilborns, but are fairly sophisticated electronic controlled units. __________________ Tony Curcio 1860 STK