Building a S̶t̶r̶o̶n̶g̶ ̶3̶5̶0̶ 383 for Frank the Tank…

A little more volume wouldn't hurt since your bearings are .003 that's on the wide side of normal. My oil clearance on mains and rods were all .002, I am using the 10% higher volume pump. I can't remember the part number but one like Indycars and Mine that is 10 % over stock would be a good idea. Rick(indycars) may know the part number, I am not as good at keeping records as he.
 
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The Small Block Chevy has the most selection of off the shelf bearings Jimmy.

Standard size .000"
.001" Undersize crank.
.002" Underdize Crank.
.010" & .020" & .030" & ,040"
 
I think I recall .011" & .012 " undersize bearings made by Cleavite Bearings.
 
.003" Main & Rods clearances are better for Drag Race.

.002" ideal on the Street SBC.
 
busterrm said:
A little more volume wouldn't hurt since your bearings are .003 that's on the wide side of normal. My oil clearance on mains and rods were all .002, I am using the 10% higher volume pump. I can't remember the part number but one like Indycars and Mine that is 10 % over stock would be a good idea. Rick(indycars) may know the part number, I am not as good at keeping records as he.
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Cheers for the info Bob.
 
What do you guys think about this out of flat rocker cover? they're on ebay for only $50AUD which is cheap.. Can they be bent back or pulled into line when bolted on?

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Heat Warpage Jimmy from TIG Welding.
Maybe bolt down to the Cylinder Heads.
Straighten out ?
The Best American Sheetmetal Aluminum Fabricated Valve covers are from BLP Bo Laws in Florida and Moroso in Connecticut .
They cost real $$$.
 
Yes.
Buy another set of Bearings Jimmy.
Grumpy likes Cleavite bearings as I do.
He likes The H series.
I like the P series Clevites.
Either or.
Best to Micrometer check measure your Crankshaft.
Grumpy has Specs online here on his Forum.
 
Not a bad idea also to get another set of bearings, .001 to close up the oil clearance to .002. That would allow a standard oil pump.
 
EVERY choice you make is a compromise in some area of your build,
adding a high volume oil pump with less than a 6-7 quart baffled oil pan is generally counter productive,
theres ALWAYS trade-offs and at times the advantages of the parts selection far out weight the disadvantages,
other times the cost and difficulty results in little or no real benefit,
the higher capacity oil pan and windage tray combo provides a significant benefit to the potential engine durability
(with or without the high volume oil pump) but its almost mandatory with the higher volume pump.
but its the builders choice to make the parts selection and try to make choices that provide carefully thought through benefits,
if your going to install a 7-8 quart baffled oil pan and windage tray youll have the oil control issue covered and the larger bearing clearances,
will not be an issue especially if you install a higher volume oil pump, like the
SBC
http://www.summitracing.com/parts/mel-10552
BBC
http://www.summitracing.com/parts/MEL-10778/
with a matching pick-up carefully clearanced to your oil pan application,
http://www.summitracing.com/parts/mor-20195/overview/year/1966/make/chevrolet/model/impala
mor-20195c.jpg

and 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
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
http://garage.grumpysperformance.com/index.php?threads/sources-for-preforated-sheet.1518/

windage screen 005.JPG

windage screen 006.JPG

windage screen 009.JPG



Image11a.jpg

SBOilSystem2a.jpg

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

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

http://garage.grumpysperformance.com/index.php?threads/magnets.120/

http://garage.grumpysperformance.com/index.php?threads/whats-a-windage-tray-do.64/
 
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There is another option Jimmy for Small Block Chevy Oil Pumps.
I am using this Melling oil pump on my Old 1994 K1500 Suburban 4X4 with the 350 TBI Small Block Chevy.
THE MELLING M55A Oil Pump.
Its the stock Replacement oil pump used on the 1967-1969 DZ302 Camaro Z28 & 1970-1/2 Z-28 350 LT-1 Camaro.
Its rated at 60-70 psi oil pressure .
Works just fine for Flat Tappet Camshafts.
ZERO WEAR ISSUES WITH THE CAM GEAR & STOCK GM MELONIZED DISRTRUBUTOR GEAR I AM USING.
COLD Start Driveaway I have 90-100psi oil pressure .
Hot Pressure is 40 psi at 600 Rpm in gear.
At 2600 Rpm Hot oil pressure is 65-70 psi.
Scatt 9000. Crankshaft I am using.
Mains & Rods set at .00015" -.002".
I Micrometer checked all .
 
Using the Stock Oil pan.
No windage tray.
4-quart pan.
Never sucked the pan dry WOT.
 
your very unlikely to "SUCK THE PAN DRY" simply because the oil flows in a constant closed loop, circulation.
the issue generally is momentary lower oil pressure at higher rpms when you hit the brakes hard or rapidly accelerate ,
and the oil in the sump due to inertial loads uncovers the oil pump pick-up,
now you may or may not notice on the oil pressure gauge,as it may only happen intermittently,
but with a 4-5 quart capacity non-baffled oil pan its CERTAINLY happens!
if you drive the car under high acceleration and hard braking.
obviously some oil pan designs are vastly better than others but Ive yet to pull down a 4-5 quart capacity oil pan equipped engine ,
that gets hard use on a constant basis,that did not show some signs of oil starvation on the bearings to some degree.
this is generally not causing engine failure but constant wear on bearing surfaces that eventually opens clearances and slowly lower the oil pressure


http://garage.grumpysperformance.com/index.php?threads/causes-of-bearing-failure.2727/

http://www.onedirt.com/tech-stories/oil-control-strategies-from-canton-racing-products/

http://www.bracketracer.com/engine/mains/mains.htm

http://www.hotrod.com/how-to/engine/ctrp-1201-bearings-clearance-basics/

http://www.bobistheoilguy.com/bearingwear/bearingwearanalysis.htm

http://www.4secondsflat.com/Thrust_bearing_failures.html

http://www.knowyourparts.com/technical-articles/types-of-engine-bearing-damage/

http://www.hotrod.com/how-to/engine/ccrp-9901-diy-oil-pan-baffle/

http://www.summitracing.com/search/Part-Type/Oil-Pan-Baffles/

https://www.holley.com/products/accessories/oil_pans/parts/302-10

http://garage.grumpysperformance.com/index.php?threads/rotating-assembly-bearings.9527/

http://garage.grumpysperformance.com/index.php?threads/oil-clearance-question.6926/
 
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It can happen in A Pontiac V8 Grumpy.
1-quart of oil in each Valvecover.
1 Quart on the Return path down through the Lifter Valley.
1 quart in the Oil Filter & Lifter Galleries.
That leaves 1 quart in the Pan sump with a 5-quart system.
It would be a WOT Situation .
Exteneded time period.
Or Fast 1/4 mile Run.
Pontiac pump moves 9-11 gallons per minute.
Modified Butler 19-20 gallons per minute .


Small Block Chevy built with Factory clearances has low oil Volume demands.

Also Jimmy is on a budget like the Rest

Stock block.
Stock rods.
I think stock crankshaft too.
Flat tappet Solid or Hydraulic cam too.
 
Those are pictures when I fabricated my windage screen, thanks Grumpy, you used something I did as a example.
 
Those are pictures when I fabricated my windage screen, thanks Grumpy, you used something I did as a example.
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why not you did a very nice job and did it correctly CONGRATS
 
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