[Umbriel]

Originally Posted by oldman

I ran almost a year with 32% lobe, 4" pulley P1 at 8 PSI, cam, heads, headers, LT1 injectors, LT1 pump. I asked Pray if I could start mixing some E85... he said "I don't know why you are NOT already out of fuel!" I think the 32% lobe (now 36% to 388%) makes a HUGE difference on the high side.

I don't know if the LT4 pump can take the bigger 36% to 38?% lobe, but if it can, I would think that is the cheaper route (lobe, LT4 pump, LT4 injectors) and it will let the engine breath. (650 AFM custom cam, 500 pump, 500 injectors) say $1900 all in, you do the labor, $2200 for a AFM delete cam and kit.

vs
Lingenfelter pump, LT4 injectors ($2000) easy labor

vs
LT4 pump, FIC injectors ($4000) easy labor

He would still need the low side, from my understanding that is the side that runs out first.

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