External oil pump?

[Trans-Am Jim]

Cranky:
Most-used pumps on the Trans-Am cars are Aviaid, Peterson, and Mangus.
Pump will cost $1,000 - $1,500 - then expect to pay another $1,000 -$1,500 in brackets, pulleys, scavenge manifolds, by-passes, etc. . .
BTW, Mangus carries complete setups for most SB applications.

[427 S/O]

Trans-am Jim, I believe cranky is talking about 'external wet oil pumps' not dry sump pumps?. External pumps run about $500.00 not including brackes or hoses. Correct me if I'm wrong.

[Trans-Am Jim]

Ooops-sorry - jumped in on the second page without really reading the entire thread. . .

[coyled]

Roger, call RDI in North Carolina and ask them for a price on the pump. scott

[Mr.Fixit]

I must admit, I don't know anything about an external wet-sump oil pump setup. What is the advantage of moving the pump outside the sump? Do you have scavenging stages of the pump, and a pressure stage? All the advantages I know of that dry sump systems have would be lost if there is no scavenging pump and no separate resevoir. If the pickup is in the oil pan, it will still be prone to being uncovered during cornering. Capacity will not be improved. No negative crankcase pressure generation. No sucking oil off the top end. Anybody have any pctures of one of these external wet-sump systems?

[Ant]

On the windsor engine I am about to build it will have an external oil pump, mounted below the oil level of a properly baffled 7 -8QT sump, should be able to do it for about $USD500.

Having owned some nice little 270 - 300bhp 289's I have never had a problem with the pencil oil pump drive, but in a much more powerful stroker type engine, that will see a few hard miles - its should be good insurance.


By the way for what its worth I have had the best results for stable oil pressure, under adverse conditions when I had my oil cooler covered for a race somtime ago in my old LS7 Cobra, using Castrol (synthtetic) RS 10w60, the engine never dropped below 60psi , while exceeding 260 degrees. Previous to that when I first ran the car it came with a well known brand of mono grade 50w oil, that was to thick when cold and guess what to thin when hot!, then a syn racing oil from the same company, those oils might lubricate well but had poor performance when hot in the big GM, so my message as well is Accusumps might be good - but good oil is worth it weight in gold - Ant.