Quote:
Originally Posted by NeighborsComplaint
I did .0035 mains on my 455. Oil pressure would dip down to 20psi at a 750 rpm idle w a Mellings M54Dvpump. I had to pull the motor a couple years later due to a leaking rear main seal and I swapped in a Butler blueprinted SD pump and billet shaft on their recommendation w the .0035 main clearances. Oil pressure jumped right up to 45 psi at idle and 80 Psi at cruise.
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This time around I used the butler blueprint 60-70 psi pump and a nitemare pump shaft. I did install the washer that comes with the pump . All my engines in the past have idled around 20 psi at temperature with a standard melling 60 psi pump.
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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007
(cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD
1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.45 @ 88.1 mph on slippery street tires.Bad 2.19 60ft.Owned since 86'
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