Oil Pump for 383 Stroker?
Thread Starter
Burning Brakes
Joined: Jan 2004
Posts: 1,043
Likes: 4
From: Va
Oil Pump for 383 Stroker?
We are having a 383 Stroker built. The builder is planning on putting in a high pressure spring into a standard volume pump to increase oil pressure.
Engine builder has said increasing the pressure is all that is needed, that the high volume just robs Horse Power.
Is it necessary to also have a high volume pump? If so what brand/part# oil pump would you recommend?
Engine builder has said increasing the pressure is all that is needed, that the high volume just robs Horse Power.
Is it necessary to also have a high volume pump? If so what brand/part# oil pump would you recommend?
Le Mans Master
Joined: Mar 2004
Posts: 7,477
Likes: 1,495
From: Little Rock AR
Originally Posted by b71vette
The builder is planning on putting in a high pressure spring into a standard volume pump to increase oil pressure.
-Mark.
Thread Starter
Burning Brakes
Joined: Jan 2004
Posts: 1,043
Likes: 4
From: Va
I am using the Moroso #20195 Stroker 7qt pan
but I am concerned w the engine builder only increasing the pressure on a standard volume and not using the HV pump, would a High Volume/High Pressure be the best all around way to go?
T want to have as much input on this as possible before I go to the engine builder to ask for the change. HV/HP would probably only be an additional $100.
Thanks You all for sahring your knowledge
T want to have as much input on this as possible before I go to the engine builder to ask for the change. HV/HP would probably only be an additional $100.
Thanks You all for sahring your knowledge
Safety Car
Joined: Oct 2004
Posts: 3,924
Likes: 735
From: Youngstown Ohio
Originally Posted by glen242
Don't know if this is a recomendation, but I am installing a HV Melling pump on my 383 with a 5 qt, not 4 qt.stock pan.
This is exactly what I have in my 383 and it has served well for the last 10 years......including some time at the drag strip.....30-35 lbs. of pressure at idle, and 60-65 lbs. when driving.
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Le Mans Master
Joined: Mar 2004
Posts: 7,477
Likes: 1,495
From: Little Rock AR
Originally Posted by stingr69
That is exactly the way I do it.
-Mark.
-Mark.
You will not be in trouble either way you do it. The HV pump is needed if you run loose bearing clearances but it does not sound like your engine builder is doing that. You should probably go with what ever he recomends. After all, you trust him with the rest of the engine and he does have to stand behind the job.
-Mark
Thread Starter
Burning Brakes
Joined: Jan 2004
Posts: 1,043
Likes: 4
From: Va
Stingr69 - great advice
I had forgotten the full details on what the engine builder had told me - and that was HV was not needed based on the engine bearing tolerances he was using. So - I now feel a lot more comfortable on this issue, thank you Forum members, this is a great place to share knowledge and expertise, glad me and my son 71VetteLt-1 are members.
Thank You all !
Thank You all !
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Melling M55A SB-Chevy Z28 H.O. Oil Pump
Stock pump with higher pressure spring that's what I have that's all that is needed for a street motor
Stock pump with higher pressure spring that's what I have that's all that is needed for a street motor
Instructor
Joined: Aug 2002
Posts: 231
Likes: 0
From: Tucson AZ
If it is a street motor, the stock pump is more than adequate. The high volume pumps can actually suck the sump dry and then you have trouble if you don't have enough oil volume in your pan. I have a 383 in my car, moderate cam with a 5500 redline (low end 420 ft/# torque monster) and it runs plenty of pressure at idle and when run hard. Chevy stock pumps are great. I took the advice of Lingenfelter's book on small block chevys and they recommended a stock pump. Just tell everyone you have one (like a forged crank) 
Save the money for gas, heads, cam, and intake unless you're making an engine for the track.
Save the money for gas, heads, cam, and intake unless you're making an engine for the track.
