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Check out these New Flat Tappet Lifters . I know they are not as good as Roller Lifters . But deliver 20-30% more oil to the Camshaft Lobes 12-16 oz of oil Per Mimute at each Lobe . Slight Drop in oil PSI 1-2 Lbs . Crower make's them for Chevy Ford Pontiac Buick Old's and AMC .
http://www.summitracing.com/parts/CR...2/?image=large
they been making them for some time first set i used was in 1988 jonhson lifter made them as well just a flat on the lifter body. the comp cam lifter bore goove tool will do the same thing
They have a flat spot Like this right ? How much oil PSI do you think they will drop ?
no just below the oil band there is a ground flat they put 12 to 16 ounces of added oil per minute and a oil drop of 1 to 2 pounds
How much does oil PSI drop from Lifter Bore grooving ? Has to be more then 2 PSI ?
no its not the deep or that wide goodson sells the tool or did .it only cuts a small groove 1/2 way up the boreQuote:
Originally Posted by tango
I am going to try a Set of these Crower Lifters in a Mild 327 I am building now . It will have under 470" Lift with 110Lbs Seat PSI springs .