nurkvinny Posted April 17, 2004 Report Share Posted April 17, 2004 I ran across something tonight I have never seen. I am hoping someone on here knows what the Hell it is. I pulled a 383 out of a car tonight, and between the rear of the crank and the flexplate, there is an 'extra' piece of about 1/8" thick metal. This piece is not symetrical(sp). It is held in with the flexplate-to-crank bolts, and extends out far enough that it covered one of the converter bolts, but not near long enough to reach the other 2. The ONLY thing I can even imagine this piece is for is balancing of the assembly, but I thought that to balance a flexplate, small weights were welded onto it. BTW, this is a SFI approved, gold-colored plate and the car has a 700r4. SO, any ideas? smile.gif Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted April 17, 2004 Report Share Posted April 17, 2004 its either a weight or a shim Quote Link to comment Share on other sites More sharing options...
SHIEF Posted April 17, 2004 Report Share Posted April 17, 2004 If there are no weights welded on it then it is just a shim as Grass said. It's kinda like a flywheel plate cover (on the bottom). You can put it back on if you really want to. Quote Link to comment Share on other sites More sharing options...
Tinman Posted April 17, 2004 Report Share Posted April 17, 2004 It is to properly balance the 400 crankshaft. They are made so you don't half to buy a new flexplate when stroking an internaly balanced sbc. You will also notice the harmonic balancer also has more weight on one side. Quote Link to comment Share on other sites More sharing options...
Tinman Posted April 17, 2004 Report Share Posted April 17, 2004 Originally posted by SHIEF: You can put it back on if you really want to. You must keep it or buy a flexplate for a 400. Quote Link to comment Share on other sites More sharing options...
nurkvinny Posted April 17, 2004 Author Report Share Posted April 17, 2004 Originally posted by Tinman: It is to properly balance the 400 crankshaft. They are made so you don't half to buy a new flexplate when stroking an internaly balanced sbc. You will also notice the harmonic balancer also has more weight on one side. I was hoping you would reply b/c if I remember correctly, you built this engine. It's out of an 88 Formula that the guy in Johnstown owned smile.gif After researching this online, I found it is common on the 383's. This engine has a 'StreetDamper' harmonic balancer and either a B&M or TCI flexplate. Thanks guys. Quote Link to comment Share on other sites More sharing options...
Tinman Posted April 17, 2004 Report Share Posted April 17, 2004 Originally posted by NurkVinny: I was hoping you would reply b/c if I remember correctly, you built this engine. It's out of an 88 Formula that the guy in Johnstown owned smile.gif After researching this online, I found it is common on the 383's. This engine has a 'StreetDamper' harmonic balancer and either a B&M or TCI flexplate. Thanks guys. Well I didn't build the motor, but I was involved in alot of the car's build up. I figured you were talking about Tom's formula. What are you putting the 383 in? Quote Link to comment Share on other sites More sharing options...
recklessOP Posted April 17, 2004 Report Share Posted April 17, 2004 Originally posted by Tinman: It is to properly balance the 400 crankshaft. They are made so you don't half to buy a new flexplate when stroking an internaly balanced sbc. You will also notice the harmonic balancer also has more weight on one side.+1, i had one on my 383... smile.gif Quote Link to comment Share on other sites More sharing options...
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