New from Oregon

Drag car-66 Fairlane - 547 ci-912 hp -736 ft lbs- had oil preasure probs all last year so limited results-1/8 mile -5.88@119mph.

kaase p-51,vacumn pump, external oil pump.

Looking for imput for improvement.

Need more info.

What block?, what oil pan, how much vacume, type of lifters, any restrictors,

Lots of experience here.

dkp

Hi -Sorry for the late response--
Block-Svo 6110-A460
Pan-Stef's-rear sumpwcustom baffels
Vacumn-10 in.@6500
Restriction- Manton push rods-.040 oil hole
Weight-3052 wet w/driver
Ladder bar
4:33
Tire 33X15
C14

[quote=
"richter69"]how much it weigh w driver? altitude? drivetrain? gear? tire? fuel type?[/quote]

Hi did not know how to reply--see my posting of today--Thanks

richter69 wrote:how much it weigh w driver? altitude? drivetrain? gear? tire? fuel type?

See my posting of today--Thanks

At that hp level I will assume that you are running a roller cam. With the A460 block you should be running a restrictor in the oil gallery that supplies the lifter galleries. Most guys end up around .0625 but I have heard of a few at .040. You also need to make sure that your lifters are oriented in the block so as to prevent the oil supply hole from ever seeing direct oil pressure.

dkp

[quote="bosshoss"]At that hp level I will assume that you are running a roller cam. With the A460 block you should be running a restrictor in the oil gallery that supplies the lifter galleries. Most guys end up around .0625 but I have heard of a few at .040. You also need to make sure that your lifters are oriented in the block so as to prevent the oil supply hole from ever seeing direct oil pressure.


Yes a roller cam--lifters are oriented correct-yes have .040 restriction-- The oile prob is centered around the external oil pump--losing prime.

You said you had .040 restricted pushrods, do you also have a .040 drilled gallery plug? Are you saying the pump looses its prime with the motor running or when its off?

dkp

[quote="bosshoss"]You said you had .040 restricted pushrods, do you also have a .040 drilled gallery plug? Are you saying the pump looses its prime with the motor running or when its off?

After a pass-oil preasure drops off eventially to 0--we have a accusump-3 qt.--and external oil pump.
We are now thinking the pump is overwellming the paper element filter and causing the pump to bypass-we are going to try an inline filter with no by pass.
I'll keep you posted.

Wow. Sounds like you have the right parts.

Not trying to badger you or belabour the point but it is crucial on a build of this kind to have the right restrictor inside the block. Without it you will push to much oil to the top end of the engine and pump the oil pan down enough to lose oil pressure. It is a very common problem.

What part of Oregon are you in? There is a guy named Ken Heard at Oregon Cams in Vancouver WA. He is very knowledgable on the 460 stuff. If you are close he might be a local resource for you.

dkp

Welcome and

Some tough games lined up this weekend,,,,,,,,,,,,,,,,,,,,, The Ducks wont be one of them though!

GO DUCKS!

[quote="bosshoss"]Wow. Sounds like you have the right parts.

Not trying to badger you or belabour the point but it is crucial on a build of this kind to have the right restrictor inside the block. Without it you will push to much oil to the top end of the engine and pump the oil pan down enough to lose oil pressure. It is a very common problem.

What part of Oregon are you in? There is a guy named Ken Heard at Oregon Cams in Vancouver WA. He is very knowledgable on the 460 stuff. If you are close he might be a local resource for you


Thanks -yes we do know Ken-haven't discussed with him yet.-will wait to see if this in line filter w/o bypass will solve the issue

Hi!
I've just visited this forum. Happy to get acquainted with you. Thanks.

Welcome! and we need pics and or video

I had 66 427 medium riser with hi riser heads back in the early 70s. wish I still had it