trans failing-6.0 swap or 700R4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**americanmusc1e** · 03-05-2009, 11:30 PM

Alright my TH350 started making death noises today and leaking fluid badly.
I have a 700R4 that i could get rebuilt and keep going, my smallblock is almost brand new (4000 miles) but I've been itching to do a 6.0 swap and i have a line on a 6.0 and tranny for around $1000 How many have done a 5.3 or 6.0 swap?? any opinions welcome

thanks

**SactoJim** · 03-06-2009, 12:57 AM

That's a great deal for a 6.0 and tranny (many miles on it?). Should be a 4l80e behind that 6.0 if they came together originally, which makes for a stout package. I would think you would spend at least that for a quality 700r4 rebuild, but you may spend another grand getting the LSX swap to all work......but in my opinion worth it in the long run.

**americanmusc1e** · 03-07-2009, 01:28 AM

yeah i'm seriously considering the swap but the truck is my daily driver and i don't know if i can do without it long enough for the swap

68C15 · 03-07-2009, 07:10 AM

I would pull the TH350 and spend ~$400 for a bench job at a tranny shop. it shouldn't take them more than 4 hours so you could have it done in a day or 2. then take my time on getting all the stuff needed for the LSx swap.

BTW, the 700R4 bench job will cost at least twice, maybe even tripple what a 350 does.

**americanmusc1e** · 03-07-2009, 08:49 PM

anybody know anywhere to get a harness from besides painless????????

boostat4500 · 03-07-2009, 09:11 PM

If money is tight just get a stock harness, and modify it, not as hard as you may think. They can be found for $100-150 all day long. Then get a PCM that's has the needed stuff removed/added for another $100ish and a fuel pump for around $100 and your up and running. A set of motor mounts can be had for a $100 or less and your all set. This all assumes the motor is 100% complete with all accessories and manifold. Not as expensive of a swap as some will lead you to believe. You will need some different gauges depending on tranny etc. What all is included for that $1000?

**americanmusc1e** · 03-08-2009, 02:13 PM

please post build/swap threads that would be a great help to me

dan42 · 03-08-2009, 02:33 PM

http://www.67-72chevytrucks.com/vboa...d.php?t=251012

Andy4639 · 03-08-2009, 09:55 PM

As far as wiring.
Street & Performance is who I used. But when I did my TPI swap they were the only folks who did any of it.

03-05-2009, 11:30 PM	#1
americanmusc1e Senior Member Join Date: Jan 2009 Location: Austin, TX Posts: 1,079	trans failing-6.0 swap or 700R4 Alright my TH350 started making death noises today and leaking fluid badly. I have a 700R4 that i could get rebuilt and keep going, my smallblock is almost brand new (4000 miles) but I've been itching to do a 6.0 swap and i have a line on a 6.0 and tranny for around $1000 How many have done a 5.3 or 6.0 swap?? any opinions welcome thanks __________________ -- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted

03-06-2009, 12:57 AM	#2
SactoJim Registered User Join Date: Oct 2005 Location: Sacramento, CA Posts: 1,970	Re: trans failing-6.0 swap or 700R4 That's a great deal for a 6.0 and tranny (many miles on it?). Should be a 4l80e behind that 6.0 if they came together originally, which makes for a stout package. I would think you would spend at least that for a quality 700r4 rebuild, but you may spend another grand getting the LSX swap to all work......but in my opinion worth it in the long run. __________________ 72 Cheyenne SWB Fleet Nut & bolt frame off in progress...99.9999% - supercharged 383 - 4 wheel discs - relocated fuel tank - My Build Thread

03-07-2009, 01:28 AM	#3
americanmusc1e Senior Member Join Date: Jan 2009 Location: Austin, TX Posts: 1,079	Re: trans failing-6.0 swap or 700R4 yeah i'm seriously considering the swap but the truck is my daily driver and i don't know if i can do without it long enough for the swap __________________ -- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted

03-07-2009, 07:10 AM	#4
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	Re: trans failing-6.0 swap or 700R4 I would pull the TH350 and spend ~$400 for a bench job at a tranny shop. it shouldn't take them more than 4 hours so you could have it done in a day or 2. then take my time on getting all the stuff needed for the LSx swap. BTW, the 700R4 bench job will cost at least twice, maybe even tripple what a 350 does. Last edited by 68C15; 03-07-2009 at 07:11 AM.

03-07-2009, 08:49 PM	#5
americanmusc1e Senior Member Join Date: Jan 2009 Location: Austin, TX Posts: 1,079	Re: trans failing-6.0 swap or 700R4 anybody know anywhere to get a harness from besides painless???????? __________________ -- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted

03-07-2009, 09:11 PM	#6
boostat4500 Registered User Join Date: Aug 2006 Location: Reno, NV Posts: 346	Re: trans failing-6.0 swap or 700R4 If money is tight just get a stock harness, and modify it, not as hard as you may think. They can be found for $100-150 all day long. Then get a PCM that's has the needed stuff removed/added for another $100ish and a fuel pump for around $100 and your up and running. A set of motor mounts can be had for a $100 or less and your all set. This all assumes the motor is 100% complete with all accessories and manifold. Not as expensive of a swap as some will lead you to believe. You will need some different gauges depending on tranny etc. What all is included for that $1000? __________________ 1971 Suburban 4x4, LQ4 6.0L, 4L80E, etc. Last edited by boostat4500; 03-07-2009 at 09:12 PM.

03-08-2009, 02:13 PM	#7
americanmusc1e Senior Member Join Date: Jan 2009 Location: Austin, TX Posts: 1,079	Re: trans failing-6.0 swap or 700R4 please post build/swap threads that would be a great help to me __________________ -- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted

03-08-2009, 02:33 PM	#8
dan42 Registered User Join Date: Feb 2007 Location: Cali Central Coast Posts: 5,191	Re: trans failing-6.0 swap or 700R4 http://www.67-72chevytrucks.com/vboa...d.php?t=251012 __________________ '67 SWB Fleetside ZZ4/350/Tremec 5-speed/4link/Scott's IFS - and fun as heck! SOLD Click here to support the board Philippians 4: 6-7

03-08-2009, 09:55 PM	#9
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: trans failing-6.0 swap or 700R4 As far as wiring. Street & Performance is who I used. But when I did my TPI swap they were the only folks who did any of it. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



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