Many years ago I had a timing set that was several teeth off.

I'm also thinking valve timing is off.

"Fuel sync" does very, very little (emissions mainly, and a skosh of low-end torque) - BUT, if way off, the distributor rotor can be misaligned with the cap towers - that's why is needs to be set right. Many early MPI systems weren't even sequential - they were batch fired.

Rick

What does the truck sound like? I put a cam and timing chain in a 81 dodge truck I had (MP260/268) with a 318 and lined up the wrong dots (MP chain, it appears that one set of dots may have been for a set up for a machining operation possibly, but there was definitely 2 dets of dots, on opposite sides of the gears IIRC). The truck ran but sounded REALLY weird. It had dual exhaust with glass packs and was very loud with the cam set up wrong, it would REALLY bark at low rpms (1500), then completely run out of steam at about 3500 RPM and sound almost like a high revving deisel, very weird, and it had about half the power it should've. It also ran hot. IIRC the chain was out about 3-4 teeth advanced.

http://www.youtube.com/user/tommyjdj

Here is a video of the truck running.

That engine is running how it should be running on the low end with that combo. (Based on what I'm hearing in that video, but you didn't crack open the throttle there!)

Your biggest problem is that it's not tuned, and you don't know for sure if the cam is timed properly right now.

Just a final post about this project. I installed a polished TB from a board member, and it helped a little, but I never was able to get this truck right. My guess is the cam was a little off, and I sold the truck to help pay for new toys. If anyone else does a Dak, may I suggest a couple things? First, start with a 96 or newer truck so you can tune the thing, or get the other M1 intake and put a carb on it. Second, double and triple check the cam timing! Save yourself the headache, and buy or borrow a degree wheel. This truck should have been well into the 13's at the track, not 17's. I'm now working on a 71 Demon 340, and have bought a degree wheel, do not trust the marks.

Tom