Need help...replacing v6 with carbed 454 and t400
 

Hello, I’m a member here and have a build thread that has been dormant for awhile. I’ve 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.

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

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.

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

Re: Need help...replacing v6 with carbed 454 and t400
 

Thx guys

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.

Re: Need help...replacing v6 with carbed 454 and t400
 

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.

Re: Need help...replacing v6 with carbed 454 and t400
 

Thanks again