03-26-2006, 10:26 AM
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| Senior Member
Join Date: Feb 2000 Location: Midlothian,VA. 23112-6108
Posts: 1,458
Car: 1982 Z-28 Engine: 5.0 w/ Holly carb Transmission: TH-700R4 | Super Ram w/Vortec scientific calculations?
I am planning on converting my 406/Vortec from carb to Super Ram. I have searched here and on some other sites to figure out what sized injectors to use, and I have found some conflicting information. Basically it seems that too small is bad and too big is worse. I was further confounded by the low/high impedance injectors. I would like to use the stock 90-92 ECM with custom prom, so I think I it will work out OK as long as I use the correct injectors. I think I need 34LB high impedance but I am not sure.
The second issue is; can the stock TPI air clearner/inlet assy flow enough air to keep pace with the 58mm/1000CFM throttle body? I measured the size of the outlet from the air cleaner/inlet at 3".
This vehicle is for street use now, and possibly some road course work later. The local road course (VIR) has a 4000' back stretch!
I am on OLD carb guy, and converting from carb to custom EFI is showing me that I should have paid more attention in school. | | |
__________________ 82 Z28- 383 roller w/Vortec heads Edelbrock Performer Vortec intake, Edelbrock Q jet, serpentine belt drive.TH700R4 w/B&M holeshot 2000 converter,& megashifter.1LE front brakes, 9bolt 3.27 w/1LE rear brakes.Aluminum driveshaft,boxed rear susp. poly everything, IROC swaybar+wonderbar and steering box. Spohn subframe connectors. 70mph@2200rpm ASE Master Tech plus L2
also Latest project car,'86 IROC stock 305TPI hit on left side,but not too bad ( now repaired and equipped with the 1LE brake system). Also 1990 IROCZ 5.0 TPI 5 speed (drive train has 150 miles since new), and another 1990 IROCZ 5.7 G-92 etc., and yet another 1990 IROC-Z, red w/flames, and 1988 IROC-Z convertible, red w/59,000 miles. www.andyz28.com |
 
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