Four-Stroke Performance Tuning

from everything I've read recently from people posting about the spiral gear oil pumps they bought,
and installed, they are NOT quieter, but more noisy oil pumps ,
Ive generally found the 12 gear tooth BBC oil pumps to work very well, on both the SBC,
if you need significantly more oil flow than the stock z28 style pump provides,
(unlikely on a nearly stock SBC)
https://www.jegs.com/i/Melling/689/...MIwuTqqJn13wIVnbrACh0s8wdqEAQYASABEgJID_D_BwE

and the LS7 BBC works well on the BBC engines.
a great many problems seemingly related to oil pumps,
are really the result of improper clearances on the oil pump pick-up to oil pan floor.
or use of the wrong oil pump drive shaft length or type.
https://www.champpans.com/products/p/m99hvs/

https://www.champpans.com/products/p/m10770/

https://www.summitracing.com/search/brand/moroso/part-type/oil-pumps

https://www.amazon.com/Moroso-22175...ocphy=9012039&hvtargid=pla-608671094115&psc=1

https://pitstopusa.com/i-5073333-mo...MIrdu_6pv13wIVDY3ICh0IoASSEAQYBCABEgL0y_D_BwE

http://garage.grumpysperformance.com/index.php?threads/installing-an-oil-pump-pick-up-tube.1800/

http://garage.grumpysperformance.com/index.php?threads/oil-system-mods-that-help.2187/

http://garage.grumpysperformance.com/index.php?threads/basic-info-on-your-v8-lube-system.52/

http://garage.grumpysperformance.com/index.php?threads/whats-a-windage-tray-do.64/

http://garage.grumpysperformance.co...chevy-oil-pump-style-guidelines-advice.13205/


you have several potential major sources for traditional wet sump SBC and BBC oil pumps
obviously youll want to shop carefully to correctly match the pump and pick-up combo ,
to the engines requirements and oil pan clearances

TRW
https://www.ebay.com/b/TRW-Car-Truck-Oil-Pumps-for-Chevrolet/6778/bn_21017532

MELLING
https://www.summitracing.com/search/make/chevrolet?keyword=melling oil pumps&ar=1&kr=melling chevy oil pumps

MOROSO
https://www.summitracing.com/search/brand/moroso/part-type/oil-pumps

Grumpy said:

a considerable enhancement too any wet sump oil pans efficiency to oil control can be made ,
through the fabrication of a semi circular perforated
sheet metal, oil control windage screen welded above , the oil control baffles in the oil pan,
located about 1/8" out from the crank assembly rotational arc,
you can weld tabs to bolt the screen into the oil pan making it a removable component. (use fine thread bolts and nyloc nuts) or weld it permanently into place
look carefully at the linked pictures below

READ THE LINKED THREAD
http://garage.grumpysperformance.com/index.php?threads/building-a-custom-wet-sump-oil-pan.65/

https://www.industrialmetalsupply.com/Products/perforated-sheet#1

https://www.industrialmetalsupply.com/perforated-steel-sheet/pss164848375

I generally buy 12" x 24" sections of perforated 16 ga to start a windage screen project , but salvage yards at times have old scrap computer cabinet doors with perforated metal doors that can be purchased cheaply as a good source

BTW don,t go nuts trying to fabricate the perforated sheet steel, cutting and test fitting, metal, its far faster and easier, too use scissors and poster board and tape to do the test fitting and clearance checks to make an accurate pattern before you cut the perforated sheet steel

it would be rather useful to find a cost effective high volume oil pan and matching oil pump pick-up matching your particular application before jumping into the purchase of related parts,
don,t blindly grab your credit card and start purchasing parts think things through, measure accurately and you'll find you save yourself a great deal of wasted time and effort
fabricating a custom built windage tray like this if properly done will more than likely be cheaper AND more effective than many you could purchase
I generally use perforated steel, stainless or mild steel, galvanized or aluminum can,t be safely or easily welded into a steel oil pan, with the common mig welder, galvanized won,t weld easily and gives off toxic fumes, you can,t weld aluminum to steel
I generally buy a 12" x 24" sheet like this and make a poster card board , pattern and tape it with duct tape in the oil pan to test fit before I cut the metal ,that way I don,t screw it up before I start to cut and fit and weld it into the oil pan, the cost will generally be under $20 an oil pan
one more in an endless list of reasons to buy a decent welder in their garage shop

yes one more in an ENDLESS LIST OF REASONS TO OWN A MIG OR TIG WELDER

Click to expand...

I Like the Factory Full Length windage tray Pontiac had.
What I prefer.
Bought extras.
Think I have 7 now.
Built in crank scraper but not real effective.
Mounts to the Main cap bosses on early 455s.
Those diamond trays guys had fail on the street.

Ernest Shaw said:

The only advantage I see to using the helical cut gears besides the quieter running, which I don't consider that a big deal but more of a side benefit is that it increases the load carrying capacity which will make it a stronger gear. A lot of this technology was used by GMC and the exhaust scavenging they had on their diesel engines. You might have seen them, they're old school superchargers.

Click to expand...

Based off of the 1955- 1959 Pontiac V8 oil pump.
Strange design.
Worked.
Pontiac went to straight cut gears afterwards.

I may add screw in plugs with weld in Bungs.
Inspection holes like Race Dry sump pans have costing $1,000 .

Early Pontiac V8 had a Floating oil pump pickup.
On O-Ring into pump.
Extra deep pan.
Held 6-7 quarts.
Unique to 1955-59.

Cool, that’s the windage tray I put in my Nova engine! Thanks Grumpy!