I thought maybe you gearheads would find this interesting. Maybe even some of you will remember these.
While digging through my garage full of 'stuff' I came across this ole fuel injection we ran on our S/G- S/P car. Actually we had two of these, one on a 427 Camaro running alcohol and the other on a 454 Vega running av-gas.
This was sold by Scott Engineering in the '80s. The tbi body bolts to a Holley carb base plate. The fuel pump drive attaches to a the vane pump from an electric Holley blue pump.
This is fuel injection at its simplest form. Global fuel changes are made by changing fuel pump drive/driven gear ratios. High speed/wot fuel changes are made by the turn of the fuel bypass knob. Idle fuel is adjusted by a metering cam attached to the primary throttle shaft.
For something to do I set it up on a test engine to see if it still worked. Here are the pictures.
This is fuel injection at its simplest form. Global fuel changes are made by changing fuel pump drive/driven gear ratios. High speed/wot fuel changes are made by the turn of the fuel bypass knob. Idle fuel is adjusted by a metering cam attached to the primary throttle shaft.
And no chips to burn. Now that's a set up *I* could work with. Did they make one for the Crossfire? Good luck, and...
TT
Looks like the test run stand is going to work out really well. Being able to break in a cam, make valve adjustments, check for leaks etc. will be so much easier than after the engine is in the car. Anyone that has adjusted valves in a C4 knows what a pain that is.
A big push for building the test stand was my adapting the late model gm rollers to work in a early block. With the test stand removing the intake to inspect the lifters, guide assembly and valve adjustment will be so much easier.
Dan,
Great pictures. And great projects, too. I'm gonna wish I had that test stand one of these days.
I have alwys wondered why no one ever put an OE roller cam or lifters in a pre-roller block. I guess nobody else bothered to get off their azz, like you did, and "just do it". The studs that hold the "spider" down, screw into an oil galley, don't they? Do you have any concerns or did you have to make any special provisions?
Great work! Good luck, and...
Dan,
The studs that hold the "spider" down, screw into an oil galley, don't they? Do you have any concerns or did you have to make any special provisions?
I cut up a junk block to see how thick the top of the oil galley is then drilled the 400 block. That area is approx .250 thick. Threads, lock-tite, and a jam nut hold the studs in place. The top of the oil galley also has a small flat spot machined for the jam nut to seat.
Great job, Dan. There certainly isn't any stress on the spider or those studs. I'm sure I'm not telling you anything, when I mention that those OE lifters are about half the price of the retro-fits. Thanks, and...
Corvette Store
TBI from days gone bye
