Originally Posted by
Fast355
96 is when the newer Express/Savanna vans came out, but GM kept building the older G-vans over 8,600 gvw. Some of the 96 TBI G-vans had vortec heads on them.
Keeping EGR really isn't that hard but a bit spendy. You would need the GMPP TBI Vortec intake and a driverside exhaust manifold with matching EGR pipe from a 96+ Vortec 350 P30 step van.
As far as cam for low-end really depends on the skill of the tuner, your gear ratio, tire size and torque converter. I really prefer a straight or single pattern cam for the intake flow limited TBI heads. The TBI heads will never turn massive RPM or flow well much over .450. That being said they can work beautifully for low-midrange when cammed properly.
I like a cam about 200-210* @ .050, .450/.450" lift on a 110* LSA ground advanced 4*. The 350 TBI from an engine standpoint would actually prefer a 108* or even 106* LSA but needs a bit higher stall converter and an experienced tuner to deal with the reduced idle vacuum that comes from a 108* lsa.
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