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[C1] Engine side mounts

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Old Jan 9, 2023 | 05:50 PM
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Default Engine side mounts

I think it was around six months ago that a forum member described the engine mounts he had made, that bolted to the side of the block and rested on the rubber bumpers that the original mount rests on. This takes the strain off the bolts that attach the water pump, and eliminates the coolant leak problem between the block and the mount and between the mount and the water pump. I've always had leakage problems here as these four little bolts have to take the weight of the engine and resist the engine torque when accelerating.. I know weld-on options are available but I really prefer the bolt-on brackets he made. I've searched and searched but I just can't find the thread. Can anyone out there please help me find the thread? He was willing to make them for those who are interested.
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Old Jan 11, 2023 | 12:21 PM
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I remember that. I think he used the four lower bolt holes on the front of the block, not the side. I modified my stock mount and thought that with heavy enough material you could eliminate the part behind the water pump and just hang on the lower mounts. The original v8s in the cars used those lower mounts. If I remember correctly the ones you are talking about used heavy angle iron and looked pretty stout. If not running p/s there is plenty of room.

Last edited by benrep; Jan 11, 2023 at 12:56 PM.
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Old Jan 11, 2023 | 12:33 PM
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Originally Posted by benrep
I remember that. I think he used the four lower bolt holes on the front of the block, not the side. I modified my stock mount and thought that with heavy enough material you could eliminate the part behind the water pump and just hang on the lower mounts. The original v8s in the cars used those lower mounts. If I remember correctly the ones you are talking about used heave angle iron and looked pretty stout. If not running p/s there is plenty of room.
You are right about '55 - '57 passenger cars using those four lower bolt holes for the front mounts.

However, those front mounts provided vertical support only while all of the torque reaction was taken by a pair of wide spaced mounts attached to the bell housing.

I'd be uneasy depending on those close spaced bolts at the front of the block to withstand the engine torque.

No, I can't prove it wouldn't work. It's just my experience-based SWAG. I wouldn't do it.
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Old Jan 11, 2023 | 01:02 PM
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Originally Posted by jim lockwood
You are right about '55 - '57 passenger cars using those four lower bolt holes for the front mounts.

However, those front mounts provided vertical support only while all of the torque reaction was taken by a pair of wide spaced mounts attached to the bell housing.

I'd be uneasy depending on those close spaced bolts at the front of the block to withstand the engine torque.

No, I can't prove it wouldn't work. It's just my experience-based SWAG. I wouldn't do it.
The water pump bolts that take all of the torque now are closer together, though they are higher up. I think it would work, though I like my method of tying them all together and using studs in the water pump holes. I can change the pump in an emergency and not need to support the engine.
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Old Jan 11, 2023 | 01:51 PM
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I think his name was Fredetl
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Old Jan 11, 2023 | 01:53 PM
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Originally Posted by benrep
The water pump bolts that take all of the torque now are closer together, though they are higher up. I think it would work, though I like my method of tying them all together and using studs in the water pump holes. I can change the pump in an emergency and not need to support the engine.
What matters, and I should have been more clear, is the distance from the bolts to the crank centerline. That distance determines how much torque such a support mechanism can withstand.
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Old Jan 11, 2023 | 01:53 PM
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I think this is it:

C1 Side motor mounts - CorvetteForum - Chevrolet Corvette Forum Discussion

https://www.corvetteforum.com/forums...or-mounts.html


ADD:
I may be wrong.
I do remember a guy that was selling them.
If iI come acroos it I'll post.
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Old Jan 11, 2023 | 02:06 PM
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Is this it?


FS (For Sale) 57-62 Front Engine mount brackets to frame - CorvetteForum - Chevrolet Corvette Forum Discussion
https://www.corvetteforum.com/forums...-to-frame.html
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Old Jan 11, 2023 | 08:03 PM
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Originally Posted by Audiophobe
I think this is it:

C1 Side motor mounts - CorvetteForum - Chevrolet Corvette Forum Discussion

https://www.corvetteforum.com/forums...or-mounts.html


ADD:
I may be wrong.
I do remember a guy that was selling them.
If iI come acroos it I'll post.
Thank-you for the information but they're not the ones I'm looking for. The ones I'm trying to find had one on each side that bolted to the block and then came up and rested on the rubber bumpers used by the original mount. There was no welding or additional bolts otheer than what was used to bolt the brackets to the side of the block. If you find them please let us know.
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