351w H/C/I AFR 265cc heads (58cc chamber, 9.5:1) Crane Cam 444232 (originally intended to run the motor on speed density but realized I wouldn't be satisfied with that, this cam is supposed to be "computer friendly" for SD EFI) 1.72 ratio Scorpion roller rockers Edelbrock Performer EFI Truck intake Stock truck throttle body 36# Trick Flow injectors (@90% use at 5500RPM) Shorty Pacesetter headers 2.5" dual exhaust, manual cutouts, Magnaflow Tru-X Muffler T18 4 speed 4.10 gears
I intended to make a very high torque, low end truck motor that I could drive anywhere, any time very reliably. I succeeded in that. The truck is very driveable. I had no real issue getting the PIMPX ECU to work. I originally missed 1 of the jumpers for the distributor but figured it out in a minute. Had the idle tuned in about 10 minutes. I use this truck for sled pulling (competition pulling a weighted sled for distance, for those that don't know), as well as a "weekend warrior" type deal. I've owned this truck since 2010, and it was a stock farm truck when I bought it.
I'm so happy with the way this all turned out that I have another, more radical 351w in my shop that I'm putting in another truck that will be getting a PIMPX ECU.
I don't know that I've found anyone else in this forum doing anything else like this. I figured it would be beneficial for someone else to know this can be done. I've made a lot of people very confused when I've told them that the truck is still EFI. And I've made even more eat crow that told me there's no way any kind of EFI would be able to keep up. Guys with carb'd big block trucks get pretty upset when an EFI small block beats them.