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Old 06-22-2018, 08:09 AM   #1
Chance48
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Need help...replacing v6 with carbed 454 and t400

Hello, Iím a member here and have a build thread that has been dormant for awhile. Iíve got a friend that wants me to pull his v6 and tranny and replace with a carbureted 454 and a t400 tranny. Part i need help with is wiring..... do I just unplug the computers, wire up the starter, run mechanical gauges etc....

All the fab work of the swap is where I accel, but the little wiring details has me concerned. Any help, advice or links to this kinda swap would be great, thank you.
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Old 06-24-2018, 09:17 AM   #2
Chance48
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Re: Need help...replacing v6 with carbed 454 and t400

Come on, gotta be someone that has done this the right way.

Really I just need some advice on how to use the factory gauges and basically have all functions of the truck feel as if it had the original setup.

Also, a good recommendation for a radiator also would help.

Thanks for any advice
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Old 06-24-2018, 12:15 PM   #3
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Re: Need help...replacing v6 with carbed 454 and t400

This section of the forum is a pretty quiet neighborhood compared to the others. It may take a bit before someone replies.

Tagging along as I am planning the same basic thing, just using a small block for now, so hoping to learn along with you.

If possible, you should start a build thread and document the process, everyone loves watching other projects go together and you can get some great ideas and sugguestions from others during the process.
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Old 06-27-2018, 10:12 PM   #4
Palf70Step
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Re: Need help...replacing v6 with carbed 454 and t400

Not a carb, but maybe DirtyLarry's swap may give you some info.

http://67-72chevytrucks.com/vboard/s...ght=dirtylarry
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Old 06-28-2018, 09:06 PM   #5
Chance48
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Re: Need help...replacing v6 with carbed 454 and t400

Thx guys
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Old 06-28-2018, 10:00 PM   #6
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Re: Need help...replacing v6 with carbed 454 and t400

Looked at an LS swap and realized the gage senders are separate from the computer. So should be a plug and play on gages. Speedometer I am not sure how you could do that.
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Old 06-28-2018, 11:39 PM   #7
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Re: Need help...replacing v6 with carbed 454 and t400

Quote:
Originally Posted by Kudzupatch View Post
Looked at an LS swap and realized the gage senders are separate from the computer. So should be a plug and play on gages. Speedometer I am not sure how you could do that.
Seeing as how the speedo is electric you're going to need a VSS hookup of some type. I think that T400's were used in those years so just search for the proper sensor for that year.
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Old 07-01-2018, 08:24 AM   #8
Chance48
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Re: Need help...replacing v6 with carbed 454 and t400

Thanks again
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