I honestly wouldnt mess with the pipe cleaner method.. If you wanna do it you should do it right. Here are some pics of my setup and then ive got some mods that arent visible at all... Take a look and make your decision.. If you were only going to do one modification i would seriously consider the oil drankbacks off the head directly back into the pan. While the heads are off have the exhaust corssovers, and exhaust bridge for the center cylinders welded up for an extra 8-12hp. PM me your email and ill send you an article with all the information you will need to get the heads tapped in the right area along with how to weld up the crossover and bridges... Along with tons more info on how to build a powerfull olds motor.
my oil mods include,
race prepped block
gasket matched oil returns on head and block
enlarged returns on the head
oil restricters
external oil drains to pan
im sure i went a bit overboard but i wanna get as much oil back to the pan as possible.
just came back across this post... I turn a heavy 4800 rpm all day long for long speed runs witout any problems.. 60psi all day long doing a suprising 70 mph with an A2 impeller.
EDIT::;
Ive got timinators hotboat article copied to PDF for us olds guys.. Hit me up with an email and ill send it your way.
My email is
[email protected]
Please send me information and pictures.
On oiling corrections on Oldsmobile 455 for a jetboat that will run at 5000 to 6000 RPM's for long periods of time.
Thank you, John Perryman.
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