Originally Posted by skipjobe
You ran a 4.62 in a Monte Carlo I guess that is what 35 pounds of boost will do, your video made me laugh I love the way that motor tries to idle. What caused the bearings to fail, detonation or an oiling problem? Who is the manufacturer of the crank support? I went with a turbo on my 383 because of the sbc problem with breaking the crank snout.
I hear you on the tune, boost and tune are deadly important, the short block is complete, I have heard you can o ring the heads, this is not a budget build but we don't want to waste money. When you say an older gm blower, are you saying an older design opposed to one that is loose from wear? Good information thanks to all.
NoNoNo, it didn't go 4.62 in my Malibu, that thing weighs 3250lbs. The motor as you saw in the vid is in my friends very ugly 63 Dodge Dart, that weighs 2400lbs and the track was a short 1/8 (620ft) The engine failed due to a cylinder wall crack near the top of the cylinder which caused the one piston to melt down to the top ring, then blowing out 4 qts. of oil starving the mains and rods, spinning 2 main bearings. I was running an o-ringed blk and reciever grooves in the heads with .043 soft copper gaskets. It was a stock 010 blk with steel 4 bolt main caps, studded everywhere, including head studs.
I also run the Summers bros. front distributor drive and oil pump drive #'s 402100 and 402100A
http://www.summersbrothersracing.com...r%20drives.htm
Front crank support RCD, #'s RCD-202200-0002,RCD-202203-0020,and RCD-201010-0010, purchased at Good Viberations.
http://www.dragparts.com/
It definately cost lots of money to keep a sm/blk blower motor together. I'm going to try the ICS o'ringed copper gaskets on the 383 when it goes back together.
Zip.