Noob Got a 4.8 and have some questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Roostboy102 · 12-02-2012, 08:54 PM

I just picked up an 02 4.8 cable pull. I'm very new to this and my drivetrain is clapped out. I figured if I was going to upgrade I might as well do it "right"

I'm pretty certain I want to go with a TKO to avoid hydro clutch (unless this is not a big deal to convert). I do want overdrive but I WILL NOT HAVE AN AUTO!

My main question is something that I cannot find any details on: can you leave the factory harness untouched and run the factory fuse block? Or I guess it should be "how". I saw the one guy did it but had no details on it. I understand using the factory harness and block is not pretty but is it functional? If I could get away with this, for now, I likely would change down the road. The cost of the trans and everything else that is absolutely necessary for the swap is high enough already...

I'm pretty decent with wiring but for this I don't think I would want to modify the harness myself. Just looking for your guys input! Thanks

And a pic

Roostboy102 · 12-03-2012, 08:33 PM

Come on... ha somebody has to have atleast an opinion on this!? If not real knowledge, an opinion is better than nothing!

They discuss it a little bit here: http://67-72chevytrucks.com/vboard/s...=517347&page=2

But never really go in depth...

71chevystep4x4 · 12-04-2012, 12:23 AM

You should just get it overwith and modify your harness now while it is out of the truck. I stressed doing it myself, but found it to be very easy, and fun to do. LT1swap.com has everything you need to know, and in great detail. You cant go wrong.

BR3W CITY · 12-04-2012, 01:06 AM

OPINION
Its a bad idea. The wiring looks crappy, will be a mess, and will be hard to troubleshoot for you...and a pain should you ever need to have work done at a shop.
My old fuse block actually melted down from the inside out, and was at risk for a fire at any time. The old corroded terminals, cracked wiring, and previous modification or changes for accessories etc by the previous owner. Its also kind of a pain to need a mix of glass and ATC/ATX type fuses. While its a bit of money, and a bit of a pain at times, having new wiring is a blessing in the future. Going on a roadtrip and having an electrical failure is a day-ruiner.

Roostboy102 · 12-04-2012, 07:41 AM

Ok thanks guys. I'll have a look at lt1swap, maybe I can do it... If I were to buy one I was looking at tech rods. Anybody used one of those harnesses?
Posted via Mobile Device

OldCreek · 12-04-2012, 04:44 PM

Remember, once you do one harness the next ones are easier...

Roostboy102 · 12-04-2012, 10:44 PM

Quote:

Originally Posted by OldCreek

Remember, once you do one harness the next ones are easier...

Does that mean I'll be addicted!? I only "plan" on havin one of these trucks/swaps!
Posted via Mobile Device

12-02-2012, 08:54 PM	#1
Roostboy102 Registered User Join Date: Jan 2012 Location: Amish Country Posts: 138	Noob Got a 4.8 and have some questions I just picked up an 02 4.8 cable pull. I'm very new to this and my drivetrain is clapped out. I figured if I was going to upgrade I might as well do it "right" I'm pretty certain I want to go with a TKO to avoid hydro clutch (unless this is not a big deal to convert). I do want overdrive but I WILL NOT HAVE AN AUTO! My main question is something that I cannot find any details on: can you leave the factory harness untouched and run the factory fuse block? Or I guess it should be "how". I saw the one guy did it but had no details on it. I understand using the factory harness and block is not pretty but is it functional? If I could get away with this, for now, I likely would change down the road. The cost of the trans and everything else that is absolutely necessary for the swap is high enough already... I'm pretty decent with wiring but for this I don't think I would want to modify the harness myself. Just looking for your guys input! Thanks And a pic __________________ 72 C10 - Multicolor, 4.8 ls, NV3500. Sold 72 K5 - Under Construction

12-03-2012, 08:33 PM	#2
Roostboy102 Registered User Join Date: Jan 2012 Location: Amish Country Posts: 138	Re: Noob Got a 4.8 and have some questions Come on... ha somebody has to have atleast an opinion on this!? If not real knowledge, an opinion is better than nothing! They discuss it a little bit here: http://67-72chevytrucks.com/vboard/s...=517347&page=2 But never really go in depth... __________________ 72 C10 - Multicolor, 4.8 ls, NV3500. Sold 72 K5 - Under Construction

12-04-2012, 12:23 AM	#3
71chevystep4x4 Registered User Join Date: Sep 2012 Location: Milwaukie OR Posts: 135	Re: Noob Got a 4.8 and have some questions You should just get it overwith and modify your harness now while it is out of the truck. I stressed doing it myself, but found it to be very easy, and fun to do. LT1swap.com has everything you need to know, and in great detail. You cant go wrong.

12-04-2012, 01:06 AM	#4
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Noob Got a 4.8 and have some questions OPINION Its a bad idea. The wiring looks crappy, will be a mess, and will be hard to troubleshoot for you...and a pain should you ever need to have work done at a shop. My old fuse block actually melted down from the inside out, and was at risk for a fire at any time. The old corroded terminals, cracked wiring, and previous modification or changes for accessories etc by the previous owner. Its also kind of a pain to need a mix of glass and ATC/ATX type fuses. While its a bit of money, and a bit of a pain at times, having new wiring is a blessing in the future. Going on a roadtrip and having an electrical failure is a day-ruiner. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

12-04-2012, 07:41 AM	#5
Roostboy102 Registered User Join Date: Jan 2012 Location: Amish Country Posts: 138	Re: Noob Got a 4.8 and have some questions Ok thanks guys. I'll have a look at lt1swap, maybe I can do it... If I were to buy one I was looking at tech rods. Anybody used one of those harnesses? Posted via Mobile Device __________________ 72 C10 - Multicolor, 4.8 ls, NV3500. Sold 72 K5 - Under Construction

12-04-2012, 04:44 PM	#6
OldCreek Registered User Join Date: Jan 2007 Location: Central Coast California Posts: 1,026	Re: Noob Got a 4.8 and have some questions Remember, once you do one harness the next ones are easier... __________________ 1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold 1972 C10 5.3L/4L60E 12bolt 5Lug - Sold 1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!! 1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold 1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold 1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold) 2003 K2500HD 8.1/Allison1000/NP263

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