It is 100% stock, and well used, oil pump. I don't believe they make any other kind of oil pump for this engine. After years of hearing 10psi per 1,000HP, it makes me quite nervous only having 30psi of pressure with the stock regulator spring and winding the engine up =P And even more so knowing a turbo will be on it at some point.
I have a re-ground "turbo" cam with less over lap and more exhaust duration for when I go that direction.
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"How I learned to stop worrying and love the OHC Pontiac L6"
The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!)
1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!)
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