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Old 02-03-2016, 02:14 PM   #1
waco
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Join Date: Aug 2011
Location: tuolumne,CA
Posts: 74
Re: 292 I6 to 4.3 V6 engine swap

geezer#99
If anything if moving a mount would do it, I think I will need to move one back, because the engine mounts are closer to the bell housing than on the V8's. But moving it back might work.

Captainfab:
When you say a plate under the V8 mounts, is that to be used as a spacer? I was wondering if the frame might be based on the 1 ton chassis for these little boxes. It did appear to be a little taller than my '70 at that point.

Thank You both for your responses

Andy
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Old 02-04-2016, 12:47 AM   #2
Captainfab
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Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
Re: 292 I6 to 4.3 V6 engine swap

Sorry I wasn't clearer. The plate I mentioned will be needed to support the bottom of the engine mount brackets as they will no longer be 100% on the crossmember. The plate will need to be bolted or welded onto the crossmember. You may also need a gusset or two on the bottom against the crossmember. This is basically what GM did on the '88 & up trucks with the 4.3 V6.
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Old 02-04-2016, 02:13 AM   #3
waco
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Posts: 74
Re: 292 I6 to 4.3 V6 engine swap

Captainfab:

Got it now. Did not think about the angle of the mount at the bottom where it mounts to the cross member. And gussets will most diffently be needed along with the bottom plate for strength.

Thanks

Andy
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