Need help...replacing v6 with carbed 454 and t400 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Chance48 · 06-22-2018, 08:09 AM

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.

Chance48 · 06-24-2018, 09:17 AM

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

Big Daddy Bear · 06-24-2018, 12:15 PM

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.

**Palf70Step** · 06-27-2018, 10:12 PM

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

http://67-72chevytrucks.com/vboard/s...ght=dirtylarry

Chance48 · 06-28-2018, 09:06 PM

Thx guys

Kudzupatch · 06-28-2018, 10:00 PM

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.

**Mr_Rich** · 06-28-2018, 11:39 PM

Quote:

Originally Posted by Kudzupatch

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.

Chance48 · 07-01-2018, 08:24 AM

Thanks again

06-22-2018, 08:09 AM	#1
Chance48 Registered User Join Date: Oct 2015 Location: Vinton, la Posts: 189	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. __________________ SHAKE N BAKE BABY, SHAKE N BAKE.... http://67-72chevytrucks.com/vboard/s...d.php?t=686729

06-24-2018, 09:17 AM	#2
Chance48 Registered User Join Date: Oct 2015 Location: Vinton, la Posts: 189	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 __________________ SHAKE N BAKE BABY, SHAKE N BAKE.... http://67-72chevytrucks.com/vboard/s...d.php?t=686729

06-24-2018, 12:15 PM	#3
Big Daddy Bear Registered User Join Date: Jan 2015 Location: Rochester, WA Posts: 259	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. __________________ No bolt or nut in the world will remain tight if you turn it to liquid!!!

06-27-2018, 10:12 PM	#4
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 48,486	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 __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

06-28-2018, 09:06 PM	#5
Chance48 Registered User Join Date: Oct 2015 Location: Vinton, la Posts: 189	Re: Need help...replacing v6 with carbed 454 and t400 Thx guys __________________ SHAKE N BAKE BABY, SHAKE N BAKE.... http://67-72chevytrucks.com/vboard/s...d.php?t=686729

06-28-2018, 10:00 PM	#6
Kudzupatch Registered User Join Date: Apr 2013 Location: GUNTERSVILLE Posts: 621	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.

07-01-2018, 08:24 AM	#8
Chance48 Registered User Join Date: Oct 2015 Location: Vinton, la Posts: 189	Re: Need help...replacing v6 with carbed 454 and t400 Thanks again __________________ SHAKE N BAKE BABY, SHAKE N BAKE.... http://67-72chevytrucks.com/vboard/s...d.php?t=686729



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