grumpyvette Posted November 10, 2004 Share Posted November 10, 2004 OK you just bought a 383 VETTE ENGINE..OR DID YOU???? HOW do you know its NOT a 307, or a 350 the guy sold you? sure it runs ok... but is it really a 383???? since a SBC 383 engine is BUILT FROM almost any 4" bore block by installing a 3.75" stroke crank and matching pistons and rods, the casting numbers will provide very little if any useful info! and you CAN,T depend on whether its internally or EXTERNALLY BALLANCED because BOTH type cranks,ballancers and flywheels could have been used in assembling a sbc 383) youll need to measure the bore and stroke, or at least the voluum of a cylinder to get the displacement, of the engine, now the correct way would be to disassemble the engine, but you can get a very good idea as to the displacement with a simple test. remove the rockers from cylinder #1 and disconnect the battery[/color] pull the #1 spark plug and put the timing mark at TDC, using a 5/8 socket and breaker bar on the crank nut, use a screw in air hose adapter to replace the spark plug from your compression tester(dont attache the gauge) just the hose and adapter(*YOU MUST USE THE TYPE THAT HAS NO VALVE OR OBSTRUCTION TO AIR OR OIL FLOW IN EITHER DIRECTION WHEN THE GAUGE IS NOT ATTACHED) have your buddy help by placing the hose in a quart of oil and turn the engine to BDC , letting it suck oil into the cylinder thru the hose, now slowly turn it untill your back at TDC,letting it blow air and oil back out, at this point the cylinders combustion chamber voluum and the hose are full of oil, NOW do it a second time, this will fill the cylinder WITHOUT AIR,but this time as the piston starts to compress the oil out of the cylinder,as you move from BDC to TDC let it squirt into a clean and empty container untill you reach TDC, a 350 will squirt out approximately 717 cc of oil, a 383 will squirt out approximately 784 cc of oil your local grocery store will have measuring cups/bowls marked in BOTH liters and ounces, the 100ML, 200ml ECT are REALLY CCs (look to pay well under $10) so your looking for about 784ML or 7 3/4 of the way to 800 ml on the measuring bowl for a 383 but a 350 will just push a bit over 715 ml of oil after finding the voluum, remove the adapter and leave the plug out, turn the engine over several times, to force the oil out BEFORE replacing the rockers, then replace the rockers and with the plug STILL OUT spin the engine on the starter several times to blow excess oil from the cylinder, only then can you replace the plug, and yeah, its measy and loud, and the cylinder will smoke for a minute untill the plug cleans itself! but its way less work than tearing the engine down to check!! Quote Link to comment Share on other sites More sharing options...
Mike kZ Posted November 10, 2004 Share Posted November 10, 2004 Cool info Grump!! Quote Link to comment Share on other sites More sharing options...
WickedWild Posted November 10, 2004 Share Posted November 10, 2004 I've missed these informative posts Quote Link to comment Share on other sites More sharing options...
Mikelly Posted November 10, 2004 Share Posted November 10, 2004 Me2! This man is a GOD! Thanks Grum-P Mike Quote Link to comment Share on other sites More sharing options...
BillZ260 Posted November 10, 2004 Share Posted November 10, 2004 I as well enjoy this plethora of content! How is everything Grumpy? Was beginning to think you left us for another forum... Quote Link to comment Share on other sites More sharing options...
ZROSSA Posted November 10, 2004 Share Posted November 10, 2004 Ditto....Welcome back. Hope you spent the time off building a wicked Zed. While your here could you have a looka t this.... http://hybridz.org/phpbb2/viewtopic.php?t=38277 Do you have any links that could be of benifit. Cheers Douglas Quote Link to comment Share on other sites More sharing options...
spdsk8r Posted November 10, 2004 Share Posted November 10, 2004 GV, glad to see you posting, again. Your knowledge is greatly welcomed and appreciated. How is that Vette build going? I hope you were able to put that driveshaft to good use. Got any pics, yet? Quote Link to comment Share on other sites More sharing options...
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