I've got a '95 LT1 with LT4 heads, Hotcam, intake, 30# injectors, and 52 mm TB. Will a stock TPI fuel pump support a 75 shot or even a 100 shot? Calculators suggest I have approx. 400 hp at the flywheel.

 

Imho, No. Your fuel pump should already be aftermarket with car as old as a third-gen, me thinks. Especially if your gonna be modding the engine for mo-power

 

Well we did a stock replacement at the time of the swap because we didn't think we'd be doing much more to it. That didn't last long. I was planning on waiting to spray it until I had all of the safety stuff anyway, go ahead and replace the pump while I'm at it.