LT1-LT4 Modifications 1993-97 Gen II Small Block V8

383 teardown pictures

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Old 06-22-2006, 11:19 PM
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Default 383 teardown pictures

well I manned up an decided to tear apart the firebird today. I took the intake off and noticed two lifter retainer clips lying the the lifter valley. the risk I took for using comp "R" lifters I guess. after that each piece I took off I expected there to be damage underneath. I kept finding parts in good working order. after I took the passenger side head off and turned the crank over did I get a very good clue as to what happened. the #6 piston wrist pin must have failed. the piston moves up and down a little bit while turning over and I can hear something knocking. it also looks like the piston just touched the head. thankfully there are no signs of damage to the head nor does the piston look bad, from the top at least. there was also no piston to valve interferance.

This weekend I'll have the engine out then I will know for sure what happened. I still don't know what caused all the glitter type stuff in the oil.

heres some pictures I snapped:

with the valvecovers off I could see "glitter" in the heads


heres a better shot of this "glitter" on my finger:


heres the passenger side cylinder bank. you can see how the #6 piston is "cleaner" looking than the rest.


heres a closer look at the piston


heres the drivers side cylinder bank. nothing seems to be out of order over here.


here are the heads


there the 383 lie, ready to be pulled out.



if those pictures arent showing up, go here: http://community.webshots.com/photo/...64521152IzhlKl

theres more and better pictures (keep hitting next)
Old 06-23-2006, 12:46 AM
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damn hope you can get her together and running soon.. i saw some fucked up **** taking apart my 350 last week.. now its happily a built 355
Old 06-23-2006, 01:19 AM
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Originally Posted by Gun5
damn hope you can get her together and running soon.. i saw some fucked up **** taking apart my 350 last week.. now its happily a built 355
Im not rebuilding it. a stock LT1 will reside in the engine bay.

I'll fix what I can within reason on the 383 and sell it. part out all the aftermarket stuff I can. then I'll put all the stock stuff back in.

kinda sad it had to end this way
Old 06-23-2006, 01:24 AM
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sorry to hear that bro, guess ill be taking ur place holding a built 94 firebird hit me up with what ur selling!!
Old 06-23-2006, 08:59 AM
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The glitter might be from the wrist pin, if you think it seized up, it coulda sheered the needle bearings instide it. Either way I am sorry to see you go down this way. Is sounds like the car will be sold as well, this true? Not going to the dark side of the LS1 are ya?
Old 06-23-2006, 10:49 AM
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Originally Posted by XxXTransAmXxX
The glitter might be from the wrist pin, if you think it seized up, it coulda sheered the needle bearings instide it. Either way I am sorry to see you go down this way. Is sounds like the car will be sold as well, this true? Not going to the dark side of the LS1 are ya?
Yes, I'm going to return it to stock and sell it.
Im crossing over to the "dark side" in a couple ways lol. If my plans don't change, Im going to buy a fox body stang and drop an LSx into it. theres just something about a 2800 lb car with 400+ rwhp that sounds fun. I don't need creature comforts like A/C, heat, power steering, power brakes. just some insane straight line acceleration.
Now that I have a reliable daily driver I can go wild with something.
Old 06-23-2006, 11:10 AM
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Well sorry to hear it ended like this, wish ya the best on your way though! I was on Streetfire.net and seen a Honda S2000 with an LS1 motor swap, now that's a light car!!
Old 06-23-2006, 11:37 AM
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Originally Posted by XxXTransAmXxX
Well sorry to hear it ended like this, wish ya the best on your way though! I was on Streetfire.net and seen a Honda S2000 with an LS1 motor swap, now that's a light car!!
while that video was cool, im pretty sure that video is fake

food for thought: the "slowest" LS1 mustang ive heard of had a stock internal LS1 with headers, th400, and a big stall. it ran low 7s in the 1/8th. that equates to low 11s in the 1/4.

tis gonna be fun!


I'll always have a special place for the ol' LT1. when it ran, it was fun.
I plan on keeping the broken pieces and proudly displaying them somewhere, lol.
Old 06-23-2006, 12:00 PM
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duudddeee didn't i see this car for sale for the longest time?
Old 06-23-2006, 12:24 PM
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Originally Posted by luckyou03
duudddeee didn't i see this car for sale for the longest time?
yup. I had it for sale then this happened. guess everyone was lucky they didnt buy it!
Old 06-24-2006, 08:01 PM
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survey says: rod bearing failure.

the crank is junk



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