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Old 04-09-2018, 04:21 PM   #1
57NAPCO
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1984 K30 454, new motor mounts to big ?

I ordered new mounts for everything (trans,engine etc...)from summit, double checked the part numbers with summit on the phone, shows to be the correct ones.
The rubber insert mounts for the old ones are 4 inchs wide the new ones are 4 1/2 inches. I call them the clam shell mounts. No way Im getting the new 4 1/2 ones in that 4 inch clam shell. Whats up? Any help is appreciated
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Old 04-09-2018, 04:25 PM   #2
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Re: 1984 K30 454, new motor mounts to big ?

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Old 04-09-2018, 04:35 PM   #3
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Re: 1984 K30 454, new motor mounts to big ?

Engine bay, right side mount plate.

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Old 04-09-2018, 07:06 PM   #4
sweetk30
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Re: 1984 K30 454, new motor mounts to big ?

ran in to the same problem .

you have a "
NON factory combo .

you need sbc engine mount inserts .

the true bbc ones are bigger than the rest of them .
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Old 04-09-2018, 10:18 PM   #5
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Re: 1984 K30 454, new motor mounts to big ?

Must of been a 350 at some point I guess. I wonder if those 350 mounts will be OK with a 450HP big block? The bigger mounts will not work unless I change out the motor mount mounting brackets I’m guessing...
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Old 04-10-2018, 12:07 AM   #6
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Re: 1984 K30 454, new motor mounts to big ?

IMO the small block mounts will be just fine.
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Old 04-10-2018, 07:31 AM   #7
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Re: 1984 K30 454, new motor mounts to big ?

Thanks y’all, much appreciated
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