'747 tuning <<< lean fuel curve

[Marc Piccioni]

Its time to dig into a buddies '747 to help him beef up the fuel curve and
have a few questions.

First the application:

This is a 3/4 ton 7.4BBC  PU truck that is used for towing.

The following mod's have been done:

1) Engine displacement increased to 482 ci. ( added 0.25" longer stroke
crank)
2) peanut port heads have been replaced with early oval port heads.
3) comp cams extreme energy 280 cam installed.
4) hooker 4 into 1 headers + freeflowing dual exhaust.
5) compression increased to 9.5:1.

So the engine is getting ~ 35% more airflow.

Now for the questions:

 What is best way to richen this up, change the base fuel table or the VE
table?
Any thoughts on how much we should increase the fuel pressure to?

/Marc



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