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: 46,608	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

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.