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08-29-2005, 09:36 PM
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#1 |
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All Praise RANDY!!
Join Date: Sep 2004
Location: Central California
Posts: 391
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BBC oil pump on SBC???
Ok,
I saw this in the "pay it forward" thread... what all is involved with this? What length pick up tube do you use? I know it has to be for a BBC oil pump, but again, what length. any help with this would really help! Thanks all! NutZ 
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08-29-2005, 11:06 PM
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#2 |
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All Praise RANDY!!
Join Date: Sep 2004
Location: Central California
Posts: 391
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anybody?
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08-30-2005, 12:56 AM
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#3 |
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Registered User
 
Join Date: Aug 2001
Location: SOMERSET KY.
Posts: 6,425
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 I'M NOT SURE ABOUT OIL PUMPS, BUT REPLACING SMALL BLOCK WATER PUMPS WITH STOCK BIG BLOCK WATER PUMPS IS THE SH!TS. THEY FLOW LIKE NO TOMORROW.  JOHN
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junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE.  THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES//LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST |
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08-30-2005, 01:56 AM
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#4 |
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JUNK COLLECTOR!!!!!
Join Date: Jan 2005
Location: Spokane, WA
Posts: 514
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i've been told a big block oil pump on a small block will give you too much pressure, and you should probably just go with a high volume small block pump, it'll give you plenty. just my .02
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 baby The dark side! 2000 XLT PSD F-250 4x4! Offroad package 1970 C10 Short-step soon to be short fleet, maybe? Corvette in truck's clothing in work! Corvette IFS, IRS, TPI and Doug Nash 4+3 |
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08-30-2005, 09:58 AM
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#5 |
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Saving 1 truck at a time!
Join Date: Aug 2001
Location: Kent, WA
Posts: 6,465
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cornutz, there is a very long and detailed article on oil pumps for small block Chevy's in How to Build Max Performance Chevy Small Blocks on a Budget by David Vizard. Too much pressure and volume is as bad as too little. The stock pump is fine for 350-375 hp and 6500-6750 rpm. There are some mods to increase the performance of your existing pump by lapping the sides and grinding some small relief passages. The article also discusses installing a big block pump for extra volume, if needed. He spends considerable time on this subject and I can't condense it here. Knowing how you intend to run your engine will help you make an educated decision. You will come away from this exercise a small block oil pump expert compared to your friends!
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'68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary) |
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08-30-2005, 02:28 PM
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#6 |
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Registered User
Join Date: Nov 2004
Location: "Under Montana skies."
Posts: 1,836
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I've often posted about Melling's improved pump design:
http://store.summitracing.com/defaul...part=MEL-10552 Only 10% increase over oem with superior design features and, I would expect, better longevity. Bolt on pickup (no welding needed), longer gear teeth, stronger cover, better supported shaft, etc.
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'71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup. |
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08-30-2005, 04:46 PM
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#7 |
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Registered User
Join Date: Apr 2004
Location: Nebraska
Posts: 335
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Big block pump on a small block does not give too much pressure.
I ran a 350 for over 45,000 miles...with no problems (sold the car). |
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08-30-2005, 04:47 PM
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#8 |
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Registered User
Join Date: Apr 2004
Location: Nebraska
Posts: 335
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Also..if you are rebuilding any Chevrolet V8 or installing a high volume pump....please spend the $10 or $15...and buy a heavy duty oil pump drive shaft!
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