I recently started my Texas Speed LS3 after priming it with an home DIY primer taped into the oil galley at the front of the block on the driver's side. Even after priming with Joe Gibbs BR oil it took longer than a 10 second cranking to build oil pressure up to 40psi when I primed with the starter (after my initial priming). I had a mechanical gauge tapped into the area above the oil filter. After priming it fired right up and had 60+psi at idle on my Racepak dash.
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