bowtie block cam bearings

[mherbert]

Do all bowtie blocks require 2 inch cam bearings? If only some of then how do you know which ones take regular cam bearings and which one takes all 5 2 inch bearings. Do they take special oil restrictors? I have one with an oil pressure problem and cannot find the problem. Are they prone to crack somewhere that would affect the oil pressure.

[dave41]

Do all bowtie blocks require 2 inch cam bearings? If only some of then how do you know which ones take regular cam bearings and which one takes all 5 2 inch bearings. Do they take special oil restrictors? I have one with an oil pressure problem and cannot find the problem. Are they prone to crack somewhere that would affect the oil pressure.

last I had very fine crack in no.3 main saddle.

[let-r-eat]

What the oil pressure doing? Wet sump?

[mherbert]

it had 40 lbs at idle and 70 lbs at racing. Ran a heat race and when i let off to exit the track, the oil pressure light came on and the guage read 20 lbs. I let it idle for a fews seconds to see if it would come back up. Instead it went to zero. I shut it off immediately and loaded the car. Back at the shop I dropped the pan and checked all the bearing and they were all ok. Cut open the oil filter and found very little metal. Replaced the oil pump with a new shuman oil pump. Now when i crank it it has 10 lbs at idle and will only go up to 40lbs.

[rb357]

two ideas 1 have had Fram oil filters do this what are you using, also there is a plug in block under rear main cap did you replace it when you assembled engine

[Lizardracing]

id also verify the gauge is accurate.

[powerslide]

it had 40 lbs at idle and 70 lbs at racing. Ran a heat race and when i let off to exit the track, the oil pressure light came on and the guage read 20 lbs. I let it idle for a fews seconds to see if it would come back up. Instead it went to zero. I shut it off immediately and loaded the car. Back at the shop I dropped the pan and checked all the bearing and they were all ok. Cut open the oil filter and found very little metal. Replaced the oil pump with a new shuman oil pump. Now when i crank it it has 10 lbs at idle and will only go up to 40lbs.

So you haven't started it since you put the new pump on?