[64speed]

Originally Posted by NeighborsComplaint

Are you running a Butler/Mellings SD pump?

Paul Carter blueprinted it

[NeighborsComplaint]

Originally Posted by 64speed

Paul Carter blueprinted it

54D-S provides 55 psi at cruise, 54F (SD) provides 80 psi at cruise.

80 psi is ideal for a large journal engine. I don't really buy into the whole distributor drive gear wear wives-tale. I have run the 54F for many years with no adverse effects on a stock HEI distributor gear. For those running a composite or brass gear, yeah, you will wear them out faster with an 80 psi pump.

[Dragncar]

Originally Posted by NeighborsComplaint

54D-S provides 55 psi at cruise, 54F (SD) provides 80 psi at cruise.

80 psi is ideal for a large journal engine. I don't really buy into the whole distributor drive gear wear wives-tale. I have run the 54F for many years with no adverse effects on a stock HEI distributor gear. For those running a composite or brass gear, yeah, you will wear them out faster with an 80 psi pump.

No it is not. I am quite certain the vast majority of engine builders go with a 60lb pump for most of their large journal engine builds.
Where it is cold and a guy has 20-50 in their 455 with 80lb pump it is possible to blow the oil filter apart on warm up. You can twist a billet pump shaft too. That alone tells you all you need to know.
I have a TRW 455 like you,60lb pump. It has been running longer, been beat harder than your 455 and still running.(faster too)
80lb pump is out dated, old school thinking and at this point, a wives tale.

[NeighborsComplaint]

Originally Posted by Dragncar

No it is not. I am quite certain the vast majority of engine builders go with a 60lb pump for most of their large journal engine builds.
Where it is cold and a guy has 20-50 in their 455 with 80lb pump it is possible to blow the oil filter apart on warm up. You can twist a billet pump shaft too. That alone tells you all you need to know.
I have a TRW 455 like you,60lb pump. It has been running longer, been beat harder than your 455 and still running.(faster too)
80lb pump is out dated, old school thinking and at this point, a wives tale.

15 years with the 80 psi pump (on Butler's recommendation) and original HEI gear. I have run the car as cold as 40 degrees with 10w30 and never had an issue on cold startup but then I have enough sense not to rev a cold engine.

[Formulajones]

People get overly concerned about a lot of nothing.

I've had an 80 lbs. pump in my bird for 25 years and over 100k miles without a single issue, and I run 20-50 in it, with a stock pump shaft . No big deal. lol

I think where someone might get into trouble is running the 20-50 that pours like molasses. But I think you'd have to be doing something really stupid with a cold engine. If you pay attention to additive packages you'll find a few 20-50 brands that pour as good and even better than some 10-30 stuff out there.

Tony Bischoff, one of the best engine builders in the country, used a big pump in dad's engine and that thing will run close to 80 PSI, and it's been really kind to the composite gear on the distributor too for the last 7 years of driving it, and he runs the same 20-50 that Tony recommended.

[scott70]

Ive ran 15w 40 from my race engines to my street engines. Happy medium,,,,All good.

[Dragncar]

Originally Posted by Formulajones

People get overly concerned about a lot of nothing.

I've had an 80 lbs. pump in my bird for 25 years and over 100k miles without a single issue, and I run 20-50 in it, with a stock pump shaft . No big deal. lol

I think where someone might get into trouble is running the 20-50 that pours like molasses. But I think you'd have to be doing something really stupid with a cold engine. If you pay attention to additive packages you'll find a few 20-50 brands that pour as good and even better than some 10-30 stuff out there.

Tony Bischoff, one of the best engine builders in the country, used a big pump in dad's engine and that thing will run close to 80 PSI, and it's been really kind to the composite gear on the distributor too for the last 7 years of driving it, and he runs the same 20-50 that Tony recommended.

What oil did Tony recommend ? I have some VR1 and Shaeffer,s 20-50 for new engine.

[Formulajones]

Originally Posted by Dragncar

What oil did Tony recommend ? I have some VR1 and Shaeffer,s 20-50 for new engine.

He's an Amsoil guy, or I should say he was then. I'm not sure if he's still using it or not, but there are a lot of comparable oils I think are just as good.

That Schaefer oil I've read about and it sounds good. Never tried it but I wouldn't be afraid to.

Something dad's engine does with the 20-50 Z-rod, it has over 70 psi oil pressure while cruising but at a hot idle it's around 30-ish after a long highway jaunt. I see it as pretty normal. Thinner oil might bring both of those readings down a pinch to something some here might consider more normal, but I kind of like decent oil pressure at idle with hydraulic roller lifters and sometimes that requires a decent oil pump, so we've just left it as is. Some of that has to do with oil clearances too but for the most part, hot idle is what I pay most attention to.