2056 still working out the bugs Options

[jmargush]

I am sorting out my recently built 2056 specs below:
2.0 Heads were done by Len Hoffman
CR 8.56:1
Full Raby valve train kit
Stock L-jet throttle body, air cleaner, and intake runners
stock 2.0 heat exchangers
pertronix ignition


It has a miss under hard acceleration.
All the vacuum lines and oil cap gaskets are new and I can't seem to find a leak any where.
So I decided to recheck the timing.
Pulled vac lines off the vacuum diaphragm and plugged, set idle to 800 rpm
timing was a little more advanced than it should be but not dramatically, but I did reset to factory setting.

Drove it and it is even worse than before.

Would the new engine combo warrant a different timing?

Fuel filter is new but my next step is to check fuel pressures and injectors.

Anything else I should be looking for?

[Java2570]

Did you ever get a check on what your fuel pressure is running at? You mentioned it in the first post
that it was on the list but if you haven't, I'd check that first. I don't have any knowledge of L Jet as my car still has D Jet but I'd think that the only real way to proceed would be the AFR gauge.
On D Jet, one can disconnect the Temp Sensor 1 on the plenum to richen it slightly but I don't think
L Jet has that sensor. After looking at the manual for L Jet on Jeff Bowlsby's site....it looks like that sensor (Temp 1) is built into the air flow meter? This has some great L jet info: http://www.google.com/url?q=https://bowlsb...RPW3jnJpjKbZiwQ