Hi all-
Great forum here! Looking for some advice on setting up a Q-Jet for a new / old truck I just bought.
The truck is a '68 GMC 3/4 ton with a mildly built 396 and a TH400 trans. I do plan on doing some towing with it here and there. It clearly needs some carb / ignition tuning. Idles rough, surges, diesels a bit, etc. It also doesn't have an A/C solenoid, and seems to be tuned with a really high idle to compensate. It currently has the original Q-Jet manifold and a 17059286 carb. As it turns out I also have an Edelbrock 1904 with the electric choke and A/C solenoid sitting on the shelf - it looks pretty clean, but I've never used it.
The engine is the original 396 and has a fresh rebuild, with a few mild upgrades to help it breathe a bit:
- .030 oversize forged pistons, 9:1-ish compression
- Hooker long tube headers
- Basic head porting
- Lunati "High Efficiency" RV type cam -
http://www.lunatipower.com/Product.aspx?id=2908&gid=258- Magnaflow dual exhaust
My current thinking is to set up the 1904 with the right metering rods / jets / etc. and swap that on when it's ready. I'm in Denver, so most of my driving will be in the 5000-8000+ elevation range.
I'm planning to order the Q-Jet book and probably a rebuild kit. Any suggestions for jets / metering rods / etc that will work well for my application would be helpful too.
Thanks,
Jason
