C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Need help identifying engine bracket and engine mount bolts !

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Old Aug 28, 2016 | 04:20 PM
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Default Need help identifying engine bracket and engine mount bolts !

Trying to get a new engine installed in my 93 corvette. I need help in figuring out what size and type of bolts are used for pretty much everything related to engine install. Starting with the engine mount bracket and the single bolts that hold the brackets to the mount.

I have a service manual for a 94, and bolts are numbered for identification. I can't seem to find any other way to figure out which bolts are used specifically the length , size etc. previous builder dumped hundreds of bolts into a box and everything is mixed up


Any help /input is appreciated !


Last edited by 5abivt; Aug 28, 2016 at 04:31 PM.
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Old Aug 28, 2016 | 05:49 PM
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#130 - GM# 10200097 OR M12 X 1/75 X 80 "flange head" - the nut would ideally be a prevailing torque

#126 - GM# 9442963 3/8-16 X 3/4 "flange head" ideally
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Old Aug 29, 2016 | 12:06 AM
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Originally Posted by WVZR-1
#130 - GM# 10200097 OR M12 X 1/75 X 80 "flange head" - the nut would ideally be a prevailing torque

#126 - GM# 9442963 3/8-16 X 3/4 "flange head" ideally
TY !


is there somewhere this info is listed ? just wondering if the actual info is somewhere i can find instead of always asking... have a feeling it wont be the last time ... Its been one of the biggest reasons if not THE biggest reason... is just figuring out which bolts go where. I never pulled the motor myself.
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Old Aug 29, 2016 | 11:25 AM
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Sort bolts by size and type, then you will know how many of each that you have. Move any hardware store looking bolts to one side. If you dont have too many extra bolts you will see a pattern of size and type available versus size, type, and amount needed. Good luck!
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Old Aug 29, 2016 | 01:49 PM
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Originally Posted by Red 91
Sort bolts by size and type, then you will know how many of each that you have. Move any hardware store looking bolts to one side. If you dont have too many extra bolts you will see a pattern of size and type available versus size, type, and amount needed. Good luck!
Basically the entire engine was disassembled (last stroker I built blew up) and I have separated all the studs and bolts etc but I haven't been able to find anything that looks like is the correct length. Next up is the accessory mount bracket... I don't even have the slightest clue as to which bolts it uses to mount to the block SO frustrating that Im debating on just parting the entire car out piece by piece. Putting the motor in and the clutch etc is all really easy to me.. but the mess they made with everything is really making me
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