72 c10-swapping to 98 LS1 NEED HELP! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

djcnova · 01-05-2009, 12:19 PM

hey guys i'm about to start on my dream project and was wondering{for those who have been there}whick harness is the best to go with when doing this swap ?I have a 72 c10 and the LS1 is out of a 98 firebird , i have the factory harness and brain box . Any help would be great . I did a search on this but couldnt find anything ,thanx again for the help !

jkaylor68gmc · 01-05-2009, 12:24 PM

Painless, hands down it is the best out there. Use your box.

Step 1 buy the harness
Step 2 install the harness in about 30 minutes, I did
Step 3 Send your box to Painless and they will falsh it for free and send it back within the week!

Painless is the only way to go, for the money everything was there, check engine light, plugs, It was so easy!!!!

jkaylor68gmc · 01-05-2009, 12:25 PM

I was going to use the factory harness, don't even bother, spend the green.

A local shop was going to charge me $400 to clean the ECU, Painless dod it for free for buying their harness.

72hotrodder · 01-05-2009, 01:51 PM

i've done it both ways and i would rather use the factory harness. but painless is a good company with great customer care. used there harnesses on about a dozen cars and even had them custom build a few.

djcnova · 01-05-2009, 07:02 PM

thanx for the quick reply, i would love to ask aside from these items can anyone think of anything else needed:
motor mounts
harness
cooling fans
fuel line \pump
regulator?

any help would be great ! i found shifty's post and it was helpful on using factory\manual gauges. my local mechanic just finished up putting a LT1 in a 64 chevy p\u and he seems to think this will be a piece of cake ,but i'm some what of a worry wart ! all my projects seem to get complicated

!! but i dont want to set a side $2500 for labor and parts {other than motor} and it turn out to $3000 - $4000 ! you guys are great !! any paint and body questions i'm here fur yall ! my family owns 4 around our town so i got those questions answered for ya !!!! thanx God Bless!

turbomike · 01-20-2009, 09:54 PM

djcnova,
I am curious how your project is coming. I would like to do the same thing. I have been a mustang guy for years now I am starting to grow up some and start working on the 72 C-10 I got. I have been considering some of the aftermarket EFI sets on Summit and Jegs but this seems like the best route. Are you using the 4L60 tranny as well? Column Shift still?

01-05-2009, 12:19 PM	#1
djcnova Registered User Join Date: Jan 2008 Location: augusta,georgia Posts: 10	72 c10-swapping to 98 LS1 NEED HELP! hey guys i'm about to start on my dream project and was wondering{for those who have been there}whick harness is the best to go with when doing this swap ?I have a 72 c10 and the LS1 is out of a 98 firebird , i have the factory harness and brain box . Any help would be great . I did a search on this but couldnt find anything ,thanx again for the help !

01-05-2009, 12:24 PM	#2
jkaylor68gmc Senior Member Join Date: Dec 2005 Location: TN Posts: 2,448	Re: 72 c10-swapping to 98 LS1 NEED HELP! Painless, hands down it is the best out there. Use your box. Step 1 buy the harness Step 2 install the harness in about 30 minutes, I did Step 3 Send your box to Painless and they will falsh it for free and send it back within the week! Painless is the only way to go, for the money everything was there, check engine light, plugs, It was so easy!!!! __________________ 1947 International KB-1 1957 Chevy Bel-Air riding low 1962 swb fleetside 2002 Chevrolet Silverado 7-inch lift on 35 Daily driver 2016 Chevy Tahoe Better halves ride

01-05-2009, 12:25 PM	#3
jkaylor68gmc Senior Member Join Date: Dec 2005 Location: TN Posts: 2,448	Re: 72 c10-swapping to 98 LS1 NEED HELP! I was going to use the factory harness, don't even bother, spend the green. A local shop was going to charge me $400 to clean the ECU, Painless dod it for free for buying their harness. __________________ 1947 International KB-1 1957 Chevy Bel-Air riding low 1962 swb fleetside 2002 Chevrolet Silverado 7-inch lift on 35 Daily driver 2016 Chevy Tahoe Better halves ride

01-05-2009, 01:51 PM	#4
72hotrodder THE TOY STORE Join Date: Nov 2008 Location: florence al Posts: 227	Re: 72 c10-swapping to 98 LS1 NEED HELP! i've done it both ways and i would rather use the factory harness. but painless is a good company with great customer care. used there harnesses on about a dozen cars and even had them custom build a few.

01-05-2009, 07:02 PM	#5
djcnova Registered User Join Date: Jan 2008 Location: augusta,georgia Posts: 10	Re: 72 c10-swapping to 98 LS1 NEED HELP! thanx for the quick reply, i would love to ask aside from these items can anyone think of anything else needed: motor mounts harness cooling fans fuel line \pump regulator? any help would be great ! i found shifty's post and it was helpful on using factory\manual gauges. my local mechanic just finished up putting a LT1 in a 64 chevy p\u and he seems to think this will be a piece of cake ,but i'm some what of a worry wart ! all my projects seem to get complicated !! but i dont want to set a side $2500 for labor and parts {other than motor} and it turn out to $3000 - $4000 ! you guys are great !! any paint and body questions i'm here fur yall ! my family owns 4 around our town so i got those questions answered for ya !!!! thanx God Bless!

01-20-2009, 09:54 PM	#6
turbomike Registered User Join Date: Feb 2008 Location: Navarre, FL Posts: 1	Re: 72 c10-swapping to 98 LS1 NEED HELP! djcnova, I am curious how your project is coming. I would like to do the same thing. I have been a mustang guy for years now I am starting to grow up some and start working on the 72 C-10 I got. I have been considering some of the aftermarket EFI sets on Summit and Jegs but this seems like the best route. Are you using the 4L60 tranny as well? Column Shift still?



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