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-   -   68 5.3 ls twin turbo build (https://67-72chevytrucks.com/vboard/showthread.php?t=653338)

samlsn 10-13-2015 06:25 PM

Re: 68 5.3 ls twin turbo build
 
Hell yeah! With a pair of turbos, do people ever run them sequentially? Like one for low end and one for the finish. Or just dump them all in ftw

trixter99 10-13-2015 11:01 PM

Re: 68 5.3 ls twin turbo build
 
Where did you get the inter cooler built.?

portworks 10-14-2015 09:51 PM

Re: 68 5.3 ls twin turbo build
 
It is from treadstone.

Kyle@FTP 10-19-2015 07:42 PM

Re: 68 5.3 ls twin turbo build
 
What bracket did you use for the A/C? No clear picture but it looks like the A/C is in the upper right hand corner on a stock bracket.

portworks 09-19-2016 07:41 PM

Re: 68 5.3 ls twin turbo build
 
Sanden mini compressor. Custom bracket from Ls brackets.
Have been smoothing the firewall , and doing a larger step notch for the rear.
Once things start coming together more, I will post some pics.

portworks 04-08-2017 10:46 AM

Re: 68 5.3 ls twin turbo build
 
3 Attachment(s)
Long overdue build update. I ended up going back and spermmo notching the rear, and adding hills rod and custom inner fender wells. Which in return made me have to re adjust the turbo positions.
I had a buddy that wanted my 70 mm turbos which realistically for the street would be laggy. So I opted to get rid of those and purchase 2 61 mm turbos. I finally finished all of the fuel system and and mounting trans and oil coolers above the intercooler. Bought a fully built 4l80e and 3200 stall from jakes perf. The 6.0 has billet h beam rods, pistons,all balanced ported 317 heads done by our shop, custom btr cam ETC.
I hope to have it started atleast in a couple of months.

Heavymetl 04-10-2017 03:57 AM

Re: 68 5.3 ls twin turbo build
 
61's on a 6.0 will be insta-spool!

portworks 04-10-2017 07:27 AM

Re: 68 5.3 ls twin turbo build
 
I hope so. It should be a fun street racer, if I can get it to hook up .

chevy72blu 04-10-2017 03:14 PM

Re: 68 5.3 ls twin turbo build
 
Cant wait to see this finished

68 short step 04-29-2017 06:31 PM

Re: 68 5.3 ls twin turbo build
 
i too am in Coweta, I ran my 5.3 on some twin on3 70s, it would start spooling about 4g, then I traded them out for a set of their 61mm turbos, now it spools about 3g, much better. that 6.0 should be spooling those up near the 2500 rpm range.. what exhaust ar did you get?

portworks 04-29-2017 10:44 PM

Re: 68 5.3 ls twin turbo build
 
61/65 .82 ar

69trk 04-29-2017 11:34 PM

Re: 68 5.3 ls twin turbo build
 
Very cool.. we have enough turbo c10s here in oklahoma, we ought to all meet at thundervalley or something

portworks 04-30-2017 09:23 AM

Re: 68 5.3 ls twin turbo build
 
That would be cool. What kind of boost ,and fuel are you running?

69trk 04-30-2017 09:44 AM

Re: 68 5.3 ls twin turbo build
 
91 pump with meth injection..

69trk 04-30-2017 09:45 AM

Re: 68 5.3 ls twin turbo build
 
14 or so lbs...waiting for my bogarts to get here, then I'm taking it to get it tuned..

portworks 04-30-2017 10:54 AM

Re: 68 5.3 ls twin turbo build
 
Same here. Hope to get mine tuned in a couple months.
Any pics, and info of your setup ?

69trk 04-30-2017 07:43 PM

Re: 68 5.3 ls twin turbo build
 
2 Attachment(s)
s476 t6 borgwarner, holley efi, 120lb injectors, turbo 400 with brake, even put ac back in it... only reason I went turbo is because I want alot of power that I can drive anywhere..

portworks 04-30-2017 08:15 PM

Re: 68 5.3 ls twin turbo build
 
Very nice truck my friend...

69trk 04-30-2017 09:52 PM

Re: 68 5.3 ls twin turbo build
 
Thanks..so is yours

portworks 05-30-2017 09:14 PM

Re: 68 5.3 ls twin turbo build
 
3 Attachment(s)
Getting closer.....

prostreet1967 07-13-2017 12:40 AM

Re: 68 5.3 ls twin turbo build
 
looks good

fast70swb 09-20-2017 07:02 PM

Re: 68 5.3 ls twin turbo build
 
Any more going on with this build?

portworks 09-20-2017 07:37 PM

Re: 68 5.3 ls twin turbo build
 
Broke the 4l80e front pump on the dyno. Should try for round two in a few weeks.
We weren't recording any #s, just tuning.

fast70swb 09-21-2017 01:07 PM

Re: 68 5.3 ls twin turbo build
 
You have any pictures of the how and where you run the exhaust?

portworks 09-21-2017 01:44 PM

Re: 68 5.3 ls twin turbo build
 
2 Attachment(s)
[QUOTE][/QUOTE
]Only on the top side. If needed I can take some underneath ?
I am running 3" full duals tucked.

fast70swb 09-21-2017 06:49 PM

Re: 68 5.3 ls twin turbo build
 
I'm getting a parts list together for my twin turbo set up . Never done one before so you. So learning as I go. Thank you for the pictures. It is nice.

portworks 09-21-2017 07:43 PM

Re: 68 5.3 ls twin turbo build
 
Thank you. I will probably be selling this truck, or Turbo setup once I am done. On to building something else LOL.

fast70swb 09-22-2017 12:42 PM

Re: 68 5.3 ls twin turbo build
 
What are you thinking next

How much would you ask for the turbo set up?

portworks 09-22-2017 01:43 PM

Re: 68 5.3 ls twin turbo build
 
70 camaro.
Not sure on price. Prob around $5000 with the complete setup,turbo cam, meth injection, and boost controller/ wideband .

portworks 03-31-2018 06:36 PM

Re: 68 5.3 ls twin turbo build
 
1 Attachment(s)
Finally found some time to finish the build, and tune. I have put arpund 2000 miles on this turbo setup, and I am so impressed how it drives like a stock truck off boost, and a total BEAST on !

boynton 04-02-2018 11:25 PM

Re: 68 5.3 ls twin turbo build
 
It looks really sharp! We need more pictures!

PGSigns 04-03-2018 08:22 AM

Re: 68 5.3 ls twin turbo build
 
Yup that came out nice. I second the more pictures request.
Jimmy

cornerstone 04-03-2018 07:49 PM

Re: 68 5.3 ls twin turbo build
 
Third. videos please.... and a ride in it if that's cool...:metal:

portworks 04-05-2018 07:49 PM

Re: 68 5.3 ls twin turbo build
 
Will be getting it ready to sell soon, and will have more info and pics. Thanks for the kind words.


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