[Chevelle-list] EFI update, it runs!

[Dave Studly]

I’ve posted in the past about my project to convert my ’70 to EFI.  The short story is, it runs!   I built a MegaSquirt computer, along with my own wiring harness, bought a Holley Stealth Ram and a used TPI throttle body.  Spark is by an 8-pin HEI distributor (TBI trucks 87-95, TPI/TBI camaros 87-92, ).  Large-cap HEI won’t fit a Stealth Ram.   Fuel system is an MSD-2225 fuel pump with 8 Ford 30 lb/hr injectors.  Right now the motor is running on base timing, as the 8-pin HEI is a computer controlled distributor.  In short order, I’ll enable the ignition control and have fully adjustable fuel + spark control.  I’m using the MSnS-Extra 021u3 firmware.   I have it starting reliably now, and just took the first drive up the street.  It still needs tuning.  With the carb setup last June, I put down 308 RWHP on a Dynojet dyno. (open headers).  We’ll see if I can do better with EFI.   Rest of the motor: 406, 5.7 rods, Wiseco forged flat-tops, ’71 487X castings, Summit 234/244 .488/.510 lift cam.    MegaSquirt web site, www.msefi.com Wiring supplies came from www.rs-autosport.com   For those who are interested, it’s not a weekend-bolt-on, but it’s not impossible.  I did it.  If you can change an intake manifold and wire a car stereo properly, you can probably do this too.   On to tuning… :-)   -Dave